MICHIGAN DEPARTMENT OF ENVIRONMENTAL QUALITY  
OFFICE OF WASTE MANAGEMENT AND RADIOLOGICAL PROTECTION  
IONIZING RADIATION RULES FOR RADIOACTIVE MATERIAL  
(By authority conferred on the director of the department of environmental quality by section  
13521 of 1978 PA 368, MCL 333.13521, and Executive Reorganization Order No. 1996-1, MCL  
330.33101)  
PART 1. GENERAL PROVISIONS  
R 325.5001 Purpose and scope  
Rule 1. These rules, except as otherwise specifically provided, apply to all persons who own,  
receive, acquire, possess, use or transfer any source of radiation in this state. Regulation by the  
state of source material, byproduct material and special nuclear material in quantities not  
sufficient to form a critical mass is subject to an agreement between the state and the NRC and to  
10 CFR Part 150 of NRC regulations. These rules do not apply to a person to the extent that the  
person is subject to regulation by the NRC. A person is subject to these rules unless specifically  
exempted under the act.  
History: 1979 AACS.  
R 325.5002 Hearing procedure.  
Rule 2. (1) Prior to the issuance of an order, the department shall afford opportunity for  
hearing which shall be conducted pursuant to the administrative procedures act of 1969, 1969 PA  
306, MCL 24.201 to 24.328.  
(2) In a contested case, the department shall conduct a hearing as provided in the  
administrative procedures act of 1969, 1969 PA 306, MCL 24.201 to 24.328.  
History: 1979 AACS; 2016 AACS.  
R 325.5003 Definitions; Ab to Ai.  
Rule 3. (1) "Absorbed dose" means the energy imparted to matter by radiation per unit mass  
of irradiated material at the place of interest. The special unit of absorbed dose is the rad.  
(2) "Accelerator" or "particle accelerator" means a radiation machine designed for or  
capable of accelerating electrically charged particles such as electrons, protons, or deuterons with  
an electrical potential in excess of 1 MeV. Radiation machines designed and used exclusively  
for the production of electron beams or x-radiation for any of the following purposes, except  
those capable of producing radioactive material in excess of exempt quantities listed in schedule  
B of Rule 147, are excluded from this definition:  
(a) The diagnosis or treatment of patients.  
(b) Industrial radiography.  
(c) Examination of the microscopic structure of materials.  
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(d) Manufacturing process control.  
(e) Research and development.  
(f) Demonstration of scientific principles for educational purposes.  
(3) "Accelerator material" means any material made radioactive by exposing it in a particle  
accelerator.  
(4) "Act" means 1978 PA 368, MCL 333.1101 to 333.25211. The terms defined in the act  
have the same meanings when used in these rules.  
(5) "Agreement material" means "byproduct material", "source material", or "special  
nuclear material in quantities not sufficient to form a critical mass" which is subject to regulation  
by this state under an agreement between the NRC and this state pursuant to section 274 of the  
federal atomic energy act of 1954, as amended, being 42 U.S.C. 2011 to 2297H-13.  
(6) "Agreement state" means a state with which the NRC has entered into an effective  
agreement pursuant to section 274b of the atomic energy act of 1954, 42 U.S.C. 2011 to 2297H-  
13.  
(7) "Airborne radioactive material" means any radioactive material dispersed in the air in  
the form of dusts, fumes, mists, vapors, or gases.  
(8) "Airborne radioactivity area" means a room, enclosure, or operating area in which  
airborne radioactive material exists in concentrations in excess of the amounts specified in  
column 1, table I of Rules 261 to 269 or a room, enclosure, or operating area in which airborne  
radioactive material exists in concentrations which, averaged over the number of hours in any  
week during which individuals are in the area, exceed 25% of the amounts specified in column 1,  
table I of Rules 261 to 269.  
History: 1979 AACS; 2016 AACS.  
R 325.5004 Definitions; Al to Au.  
Rule 4. "Authorized recipient" means any person licensed or otherwise authorized in writing  
by the department, the federal government or any agency thereof, or an agreement state to  
possess radioactive material or as authorized to the extent permitted by exemption from these  
rules.  
History: 1979 AACS; 2016 AACS.  
R 325.5005 Definitions; B.  
Rule 5. (1) "Barrier" includes a primary protective barrier, a secondary protective barrier, or  
a personnel barrier.  
(2) "Beam axis" means a line from the source through the centers of the gamma-ray fields.  
(3) "Beam-limiting device" means a device which provides a means to restrict the  
dimensions of the gamma-ray field.  
(4) "Byproduct material" means any radioactive material, except special nuclear material,  
yielded in or made radioactive by exposing it to the radiation incident to the process of producing  
or utilizing special nuclear material.  
History: 1979 AACS; 2016 AACS.  
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R 325.5006 Definitions; C.  
Rule 6. (1) "Calendar quarter" means not less than 12 consecutive weeks nor more than 14  
consecutive weeks. The first calendar quarter of each year shall begin in January and subsequent  
calendar quarters shall be arranged so that a day is not included in more than 1 calendar quarter  
nor is a day in any 1 year omitted from inclusion within a calendar quarter. A licensee or  
registrant shall not change the method observed by him or her of determining calendar quarters  
for purposes of these rules except at the beginning of a calendar year.  
(2) "Controlled area" means a restricted area.  
(3) "Curie" means the quantity of radioactive material that decays at the rate of 3.7 x 1010  
disintegrations per second (dps). Commonly used submultiples of the curie (Ci) are the  
millicurie (mCi), the microcurie (μCi) and the nanocurie (nCi). One millicurie = 0.001 curie =  
3.7 x 107 dps. One microcurie = 0.000001 curie = 3.7 x 104 dps. One nanocurie = 0.000000001  
curie = 37 dps. Curie is the special unit of measurement of radioactivity.  
History: 1979 AACS; 2016 AACS.  
R 325.5007 Definitions; D.  
Rule 7. (1) "Department" means the department of environmental quality.  
(2) "Dose" means absorbed dose or dose equivalent as appropriate.  
(3) "Dose equivalent" means the absorbed dose in rads times certain modifying factors and  
is a quantity that expresses on a common scale for all radiation a measure of the postulated effect  
on a given organ from small amounts of radiation. The special unit of dose equivalent is the rem.  
History: 1979 AACS; 2016 AACS.  
R 325.5008 Definitions; E, F.  
Rule 8. (1) "Exposure" means the quotient of dQ by dm where dQ is the absolute value of  
the total charge of the ions of 1 sign produced in air when all the electrons (negatrons and  
positrons) liberated by photons in a volume element of air having mass dm are completely  
stopped in air. The special unit of exposure is the roentgen.  
(2) "Exposure rate" means the exposure per unit of time, such as R/min, mR/h.  
(3) "Facility" means the location at which 1 or more devices or sources of radiation are  
installed or located within 1 building or under 1 roof and are under the same administrative  
control.  
History: 1979 AACS; 2016 AACS.  
R 325.5009 Definitions; G, H.  
Rule 9. (1) "High radiation area" means an area, accessible to individuals, in which there  
exists such radiation, that an individual could receive in any 1 hour a dose in excess of 100  
millirems.  
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(2) "Human use" means the internal or external administration of radiation or radioactive  
materials to human beings.  
History: 1979 AACS; 2016 AACS.  
R 325.5010 Definitions; I.  
Rule 10. (1) "Individual" means a human being.  
(2) "Inspection" means an official examination or observation to determine compliance with  
the act, these rules, license conditions, registration conditions, or orders of the department.  
(3) "Installation" means a location, having boundaries specified by the licensee or registrant,  
where for a period of more than 30 days, 1 or more sources of radiation are used, operated, or  
stored. A part of a building, an entire building, a plant, or plant site may be designated as an  
installation.  
History: 1979 AACS; 2016 AACS.  
R 325.5011 Definitions; L.  
Rule 11. (1) "Level" means radiation flux or intensity at a specific point. It is sometimes  
expressed in terms of the dose an individual would receive if he or she were at that point or  
location.  
(2) "License" means a license issued pursuant to part 2 except where otherwise specified.  
History: 1979 AACS; 2016 AACS.  
R 325.5012 Definitions; M to O.  
Rule 12. (1) "Manufactured" means produced or prepared for use or sale by an industrial  
manufacturing process. It includes factory assembly of components but does not include  
assembly of manufactured parts at the site of use.  
(2) "Naturally occurring material" means radioactive material found radioactive in the  
normal isotopic distribution of elements rather than rendered radioactive by artificial means.  
(3) "Nuclear regulatory commission" or "NRC" means the United States nuclear regulatory  
commission established by section 201 of the federal energy reorganization act of 1974, being  
Public Law 93-438.  
(4) "Occupational dose" means the dose received in the course of occupational exposure as  
calculated or estimated from dosimeters.  
(5) "Occupational exposure" means radiation exposure received by an individual in a  
restricted area, or in the course of employment in which the individual's duties involve being  
exposed to radiation. It does not include exposure of an individual to radiation for the purpose of  
diagnosis or therapy of the individual.  
History: 1979 AACS; 2016 AACS.  
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R 325.5013 Definitions; P.  
Rule 13. (1) "Particle accelerator" or "accelerator" means a radiation machine designed for  
or capable of accelerating electrically charged particles such as electrons, protons, or deuterons,  
with an electrical potential in excess of 1 MeV. Radiation machines designed and used  
exclusively for the production of electron beams or x-radiation for any of the following purposes,  
except those capable of producing radioactive material in excess of exempt quantities listed in  
schedule B of Rule 147, are excluded from this definition:  
(a) The diagnosis or treatment of patients.  
(b) Industrial radiography.  
(c) Examination of the microscopic structure of materials.  
(d) Manufacturing process control.  
(e) Research and development.  
(f) Demonstration of scientific principles for educational purposes.  
(2) "Personnel barrier" means a barrier which restricts personnel from potential radiation  
exposure by restricting access to the vicinity of a source of radiation.  
(3) "Personnel monitoring equipment" means a device such as a film badge, pocket  
dosimeter, or thermoluminescent dosimeter (TLD) designed to be worn or carried by an  
individual for the purpose of estimating the radiation dose received by him or her.  
(4) "Primary protective barrier" means the material, excluding filters, placed in the useful  
beam to reduce the radiation exposure for protection purposes.  
History: 1979 AACS; 2016 AACS.  
R 325.5014 Definitions; Ra.  
Rule 14. (1) "Rad" means 1/100 of a joule of absorbed radiation energy per kilogram of  
material, or 100 ergs per gram and is the special unit of absorbed dose.  
(2) "Radiation" means ionizing radiation.  
(3) "Radiation area" means an area, accessible to individuals, in which there exists such  
radiation that an individual could receive in any 1 hour a dose in excess of 5 millirems, or in any  
5 consecutive days a dose in excess of 100 millirems.  
(4) "Radiation monitoring" means the periodic or continuous determination of the exposure  
rate or contamination level in an area (area monitoring) or of the dose received by an individual  
(personnel monitoring).  
(5) "Radiation protection supervisor" means the individual specified by the licensee or  
registrant who has the authority and the responsibility for radiation protection.  
(6) "Radiation worker" means an individual assigned work with or around sources of  
radiation or who, during the performance of his or her assigned duties, receives or is likely to  
receive a dose in any calendar quarter in excess of 300 millirems.  
(7) "Radioactivity" means the property of certain isotopes of the basic elements of  
spontaneously emitting nuclear particles or gamma radiation or of emitting x-radiation following  
orbital electron capture or of undergoing spontaneous fission.  
History: 1979 AACS; 2016 AACS.  
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R 325.5016 Definitions; Re to Ro.  
Rule 16. (1) "Rem" means the absorbed dose in rads multiplied by appropriate modifying  
factors which are determined by the quality of radiation and the conditions of exposure and is the  
special unit of dose equivalent. For the purpose of these regulations, each of the following is  
considered to be equivalent to a dose of 1 rem:  
(a) An exposure of 1 roentgen of x or gamma radiation.  
(b) A dose of 1 rad due to x, gamma, or beta radiation.  
(c) A dose of 0.1 rad due to neutrons or high energy protons.*  
(d) A dose of 0.05 rad due to particles heavier than protons and with sufficient energy to  
reach the lens of the eye.  
* If it is more convenient to measure the neutron flux, or equivalent, than to determine the  
neutron absorbed dose in rads, 1 rem of neutron radiation may, for purposes of these regulations,  
be assumed to be equivalent to 14 million neutrons per square centimeter incident upon the body;  
or, if there exists sufficient information to estimate with reasonable accuracy the approximate  
distribution in energy of the neutrons, the incident number of neutrons per square centimeter  
equivalent to 1 rem may be estimated from the following table:  
Neutron Flux Dose Equivalents  
Number of neutrons per square  
centimeter for a dose  
equivalent  
of 1 rem  
Average flux to deliver  
100 millirem in 40 hours  
(neutrons/cm2 per second)  
Neutron Energy  
(MeV)  
(neutrons/cm2)  
970 x 106  
720 x 106  
820 x 106  
400 x 106  
120 x 106  
43 x 106  
Thermal  
0.0001  
0.005  
0.02  
0.1  
670  
500  
570  
280  
80  
30  
18  
20  
18  
0.5  
1.0  
2.5  
5.0  
7.5  
10  
10 to 30  
26 x 106  
29 x 106  
26 x 106  
24 x 106  
17  
17  
10  
24 x 106  
14 x 106  
(2) "Research and development" means theoretical analysis, exploration, or  
experimentation; or the extension of investigative findings and theories of a scientific or  
technical nature into practical application for experimental and demonstration purposes,  
including the experimental production and testing of models, devices, equipment, materials, and  
processes. This definition does not apply to human use.  
(3) "Restricted area" or "controlled area" means an area access to which is controlled by a  
licensee or registrant for purposes of protection of individuals from exposure to radiation or  
radioactive materials. It does not include an area used for residential quarters, although a  
separate room in a residential building may be set apart as a restricted area.  
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(4) "Roentgen" means 2.58 x 10-4 Coulombs/kilogram of air and is the special unit of  
exposure.  
History: 1979 AACS; 2016 AACS.  
R 325.5017 Definitions; Se to So.  
Rule 17. (1) "Sealed source" means radioactive material that is permanently bonded or fixed  
in a capsule or matrix designed to prevent release and dispersal of the radioactive material under  
the most severe conditions which are likely to be encountered in normal use and handling.  
(2) "Secondary protective barrier" means the material placed in the path of scattered and  
leakage radiation to reduce the radiation exposure for protection purposes.  
(3) "Shall" means required to comply with these rules pursuant to the act and enforceable  
under the act and the administrative procedures act of 1969, 1969 PA 306, MCL 24.201 to  
24.328.  
(4) "Should" means recommended when practicable to meet optimum radiation safety  
standards.  
(5) "Source material" means uranium or thorium, or any combination thereof, in any  
physical or chemical form; or ores which contain by weight 1/20 of 1% (0.05%) or more of  
uranium, thorium or any combination thereof. Source material does not include special nuclear  
material.  
(6) "Source of radiation" means any radioactive material, or any device or equipment  
containing radioactive material.  
History: 1979 AACS; 2016 AACS.  
R 325.5018 Definitions; Sp to Su.  
Rule 18. (1) "Special nuclear material in quantities not sufficient to form a critical mass"  
means uranium enriched in the isotope U-235 in quantities not exceeding 350 grams of contained  
U-235; uranium-233 in quantities not exceeding 200 grams; plutonium in quantities not  
exceeding 200 grams; or any combination of them in accordance with the following formula:  
For each kind of special nuclear material, determine the ratio between the quantity of that special  
nuclear material and the quantity specified above for the same kind of special nuclear material.  
The sum of the ratios for all of the kinds of special nuclear material in combination shall not  
exceed "1" (i.e., unity). For example, the following quantities in combination would not exceed  
the limitation and are within the formula:  
175 (grams contained U -235) 50 (grams U -233) 50 (grams Pu)  
1  
350  
200  
200  
(2) "Stationary equipment" means equipment that is installed in a fixed location.  
(3) "Survey" means a critical evaluation of a facility or area incident to the production, use,  
release, disposal, or presence of sources of radiation under a specific set of conditions to  
determine actual or potential radiation hazards. When appropriate, the evaluation includes tests,  
physical examination, source inventory and accountability, and measurements of levels of  
radiation or concentration of radioactive material present.  
History: 1979 AACS; 2016 AACS.  
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R 325.5019 Definitions; T.  
Rule 19. (1) "Test" means a procedure for determining the characteristics or condition of a  
source of radiation, or circumstances relative thereto.  
(2) "Thermoluminescent dosimeter" or "TLD" means a device used for radiation monitoring  
which measures integrated dose by the principle of thermoluminescence.  
(3) "These rules" means all parts.  
History: 1979 AACS; 2016 AACS.  
R 325.5020 Definitions; U, V.  
Rule 20. (1) "Unrefined and unprocessed ore" means ore in its natural form before any  
processing, such as grinding, roasting, beneficiating or refining.  
(2) "Unrestricted area" or "uncontrolled area" means an area access to which is not  
controlled by a licensee or registrant for purposes of protection of individuals from exposure to  
radiation or radioactive materials, or an area used for residential quarters.  
History: 1979 AACS; 2016 AACS.  
R 325.5021. Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5025. Prefixes.  
Rule 25. The following prefixes are used in these rules to mean the numbers indicated:  
Symbol Prefix Quantity Symbol Prefix Quantity  
d
c
deci  
(=10-1)  
(=10-2)  
(=10-3)  
(=10-6)  
(=10-9)  
(=10-12)  
(=10-15)  
(=10-18)  
da  
h
k
M
G
T
deka  
hecto  
kilo  
mega  
giga  
tera  
(=10)  
centi  
milli  
micro  
nano  
pico  
(=102)  
(=103)  
(=106)  
(=109)  
(=1012)  
m
μ
n
p
f
femto  
atto  
a
History: 1979 AACS.  
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EXEMPTIONS  
R 325.5031 Departmental action.  
Rule 31. Upon application or upon its own initiative, the department may grant exemptions  
or exceptions from the requirements of these rules as it determines are authorized by law and will  
not result in undue hazard to public health and safety or property.  
History: 1979 AACS; 2016 AACS.  
R 325.5032 Carriers.  
Rule 32. A common or contract carrier, freight forwarder, warehouseman, and the United  
States postal service are exempt from these rules to the extent that they transport or store  
agreement material in the regular course of carriage for another or storage incident thereto.  
History: 1979 AACS; 2016 AACS.  
R 325.5033 Nuclear regulatory commission contractors.  
Rule 33. An NRC contractor or subcontractor of the following categories operating in this  
state is exempt from these rules to the extent that the contractor or subcontractor under his or her  
contract receives, acquires, possesses, uses, or transfers sources of radiation:  
(a) A prime contractor performing work for the NRC at United States government-owned or  
controlled sites.  
(b) A prime contractor performing research in, or development, manufacture, storage,  
testing, or transportation of, atomic weapons or components thereof.  
(c) A prime contractor using or operating nuclear reactors or other nuclear devices in a  
United States government-owned vehicle or vessel.  
(d) Any other prime contractor or subcontractor when the state and the NRC jointly  
determine that, under the terms of the contract or subcontract, there is adequate assurance that  
the work thereunder can be accomplished without undue risk to the public health and safety and  
that the exemption of such contractor or subcontractor is otherwise appropriate.  
History: 1979 AACS; 2016 AACS.  
RECORDS, INSPECTIONS, TESTS AND ENFORCEMENT  
R 325.5041 Records.  
Rule 41. A licensee or registrant shall keep records showing the receipt, transfer, and  
disposal of all sources of radiation. Additional record requirements are specified elsewhere in  
these rules.  
History: 1979 AACS; 2016 AACS.  
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R 325.5042 Inspections.  
Rule 42. (1) Under authority of section 13517(1) of the act, the department may enter at all  
reasonable times upon private or public property to conduct compliance investigations.  
(2) Under authority of section 13517(2) of the act, the department may obtain a warrant if  
necessary for search of property or seizure of sources of radiation or evidence of a violation of  
the act or any rule or license.  
(3) A licensee or registrant shall make available to the department for inspection, all records  
maintained pursuant to these rules.  
History: 1979 AACS; 2016 AACS.  
R 325.5043 Impounding.  
Rule 43. Sources of radiation are subject to impounding pursuant to section 13517(2) of the  
act.  
History: 1979 AACS; 2016 AACS.  
R 325.5044 Tests.  
Rule 44. A licensee or registrant shall perform upon instructions from the department and  
shall permit the department to perform such reasonable tests as the department deems  
appropriate or necessary, including tests of the following:  
(a) Sources of radiation.  
(b) Facilities wherein sources of radiation are used or stored.  
(c) Radiation detection and monitoring instruments.  
(d) Other equipment and devices used in connection with utilization or storage of licensed  
or registered sources of radiation.  
History: 1979 AACS; 2016 AACS.  
R 325.5045. Additional requirements.  
Rule 45. The department, by rule or order, may impose upon a licensee or registrant  
requirements in addition to those set forth in these rules that it deems appropriate or necessary to  
minimize danger to public health and safety or property.  
History: 1979 AACS.  
R 325.5046 Violations.  
Rule 46. (1) Under authority of section 13536 of the act, the department may seek a court  
order enjoining violation of or directing compliance with the act or any rule or order issued  
thereunder.  
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(2) Under authority of section 13535 of the act, a person who performs any act for which  
licensing or registration is required pursuant to these rules when that person is not licensed,  
registered, or exempted, is guilty of a misdemeanor and may be fined, imprisoned or both.  
History: 1979 AACS; 2016 AACS.  
R 325.5047 Communications.  
Rule 47. Communications and reports concerning these rules, and applications filed  
thereunder, should be addressed to the Michigan Department of Environmental Quality, Office  
of Waste Management and Radiological Protection, Constitution Hall, 525 West Allegan Street,  
P.O. Box 30241, Lansing, Michigan 48909.  
History: 1979 AACS; 2016 AACS.  
R 325.5049. Rescinded.  
History: 1979 AACS; 2016 AACS.  
PART 2. LICENSING OF RADIOACTIVE MATERIAL  
R 325.5051 Purpose and scope.  
Rule 51. (1) This part provides for the licensing of radioactive material. A person shall not  
own, receive, acquire, possess, use, or transfer radioactive material except as authorized in a  
specific or general license issued pursuant to this part or as otherwise provided in this part.  
(2) In addition to the requirements of this part, a licensee is subject to the requirements of  
parts 1 and 5.  
History: 1979 AACS; 2016 AACS.  
EXEMPTIONS  
SOURCE MATERIAL  
R 325.5052 Source material as low percentage of weight.  
Rule 52. A person is exempt from this part to the extent that he or she receives, possesses,  
uses, or transfers source material in any chemical mixture, compound, solution, or alloy in which  
the source material is by weight less than 1/20 of 1% (0.05%) of the mixture, compound,  
solution, or alloy.  
History: 1979 AACS; 2016 AACS.  
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R 325.5053 Unprocessed ore containing source material.  
Rule 53. A person is exempt from this part to the extent that he or she receives, possesses,  
uses, or transfers unrefined and unprocessed ore containing source material. However, the  
person shall not refine or process such ore except as authorized in a specific license.  
History: 1979 AACS; 2016 AACS.  
R 325.5054 Thorium used in certain articles.  
Rule 54. A person is exempt from this part to the extent that he or she receives, possesses,  
uses, or transfers any quantity of thorium contained in the following:  
(a) Incandescent gas mantles.  
(b) Vacuum tubes.  
(c) Welding rods.  
(d) Electric lamps for illuminating purposes if each lamp does not contain more than 50  
milligrams of thorium.  
(e) Germicidal lamps, sunlamps, and lamps for outdoor or industrial lighting if each lamp  
does not contain more than 2 grams of thorium.  
(f) Rare earth metals and compounds, mixtures, and products containing not more than  
0.25% by weight thorium, uranium, or any combination of these.  
History: 1979 AACS; 2016 AACS.  
R 325.5055 Source material contained in ceramic and other articles.  
Rule 55. A person is exempt from this part to the extent that he or she receives, possesses,  
uses, or transfers the following:  
(a) Source material contained in the following products:  
(i) Glazed ceramic tableware, if the glaze contains not more than 20% by weight source  
material.  
(ii) Glassware, glass enamel, and glass enamel frit containing not more than 10% by weight  
source material; but not including commercially manufactured glass brick, pane glass, ceramic  
tile, or other glass, glass enamel, or ceramic used in construction.  
(iii) Piezoelectric ceramic containing not more than 2% by weight source material.  
(b) Photographic film, negatives, and prints containing uranium or thorium.  
(c) A finished product or part fabricated of, or containing, tungsten-thorium or magnesium-  
thorium alloys, if the thorium content of the alloy does not exceed 4% by weight. The  
exemption contained in this paragraph does not authorize the chemical, physical, or metallurgical  
treatment or processing of any such product or part.  
History: 1979 AACS; 2016 AACS.  
R 325.5056 Uranium contained in counterweights.  
Rule 56. (1) A person is exempt from this part to the extent that he or she receives,  
possesses, uses or transfers uranium contained in counterweights installed in aircraft,  
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marinecraft, rockets, projectiles, and missiles, or stored or handled in connection with installation  
or removal of such counterweights if all of the following conditions are met:  
(a) The counterweights are manufactured in accordance with a specific license issued by the  
department, the NRC, or an agreement state authorizing distribution by the licensee pursuant to  
this rule or equivalent regulations of the NRC or an agreement state.  
(b) Each counterweight has been impressed with the following legend clearly legible  
through any plating or other covering: "DEPLETED URANIUM".  
(c) Each counterweight is durably and legibly labeled or marked with the identification of  
the manufacturer and the statement: "UNAUTHORIZED ALTERATIONS PROHIBITED".  
(2) The requirements specified in subrule (1)(b) and (c) of this rule need not be met by  
counterweights manufactured before December 31, 1969 if the counterweights are impressed  
with the legend, “CAUTION - RADIOACTIVE MATERIAL - URANIUM”, as previously  
required by applicable regulations.  
(3) The exemption in this rule does not authorize the chemical, physical, or metallurgical  
treatment or processing of counterweights other than repair or restoration of any plating or other  
covering.  
History: 1979 AACS; 2016 AACS.  
R 325.5057 Uranium contained in shipping container shields.  
Rule 57. A person is exempt from this part to the extent that he or she receives, possesses,  
uses, or transfers uranium used as shielding constituting part of any shipping container which is  
conspicuously and legibly impressed with the legend "CAUTION - RADIOACTIVE  
SHIELDING - URANIUM" and which meets the specifications for containers for radioactive  
materials prescribed by section 178.250, specification 55, part 178, of the regulations published  
by the United States department of transportation, 49 CFR 178.250.  
History: 1979 AACS; 2016 AACS.  
R 325.5058 Thorium contained in lenses.  
Rule 58. A person is exempt from this part to the extent that he or she receives, possesses,  
uses, or transfers thorium contained in finished optical lenses, if each lens does not contain more  
than 30% by weight of thorium. The exemption in this rule does not authorize either of the  
following:  
(a) The shaping, grinding, or polishing of such lens or manufacturing processes other than  
the assembly of such lens into optical systems and devices without any alteration of the lens.  
(b) The receipt, possession, use, or transfer of thorium contained in contact lenses, in  
spectacles or in eyepieces in binoculars or other optical instruments.  
History: 1979 AACS; 2016 AACS.  
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R 325.5059 Uranium contained in fire detection units.  
Rule 59. A person is exempt from this part to the extent that he or she receives, possesses,  
uses, or transfers uranium contained in detector heads for use in fire detection units, if each  
detector head contains not more than 5 nanocuries of uranium.  
History: 1979 AACS; 2016 AACS.  
R 325.5060 Thorium contained in aircraft engine parts.  
Rule 60. A person is exempt from this part to the extent that he or she receives, possesses,  
uses, or transfers thorium contained in any finished aircraft engine part containing nickel-thoria  
alloy, if both of the following conditions are met:  
(a) The thorium is dispersed in the nickel-thoria alloy in the form of finely divided thoria  
(thorium dioxide).  
(b) The thorium content in the nickel-thoria alloy does not exceed 4% by weight.  
History: 1979 AACS; 2016 AACS.  
R 325.5061 Exemptions do not authorize manufacture.  
Rule 61. The exemptions in Rules 54 to 60 do not authorize the manufacture of any of the  
products described.  
History: 1979 AACS; 2016 AACS.  
R 325.5065 Exempt concentrations.  
Rule 65. Except as provided in Rule 66, a person is exempt from this part to the extent that  
he or she owns, receives, acquires, possesses, uses, or transfers products or materials containing  
radioactive material in concentrations not in excess of those listed in Rule 146.  
History: 1979 AACS; 2016 AACS.  
R 325.5066. Material transferred to exempt persons.  
Rule 66. A person shall not introduce radioactive material into a product or material  
knowing or having reason to believe that it will be transferred to persons exempt under Rule 65  
or equivalent regulations of the NRC or an agreement state.  
History: 1979 AACS; 2016 AACS.  
R 325.5067 Items containing tritium, promethium-147, or radium.  
Rule 67. Except for persons who apply tritium, promethium-147, or radium to, or persons  
who incorporate tritium, promethium-147, or radium into, the following products, a person is  
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exempt from these rules to the extent that he or she owns, receives, acquires, possesses, uses, or  
transfers the following products:  
(a) Timepieces or timepiece hands or dials containing not more than the following specified  
quantities of radioactive material and not exceeding the following specified levels of radiation:  
(i) 25 millicuries of tritium per timepiece.  
(ii) 5 millicuries of tritium per hand.  
(iii) 15 millicuries of tritium per dial; bezels when used shall be considered as part of the  
dial.  
(iv) 100 microcuries of promethium-147 per watch or 200 microcuries of promethium-147  
per any other timepiece.  
(v) 20 microcuries of promethium-147 per watch hand or 40 microcuries of promethium-  
147 per other timepiece hand.  
(vi) 60 microcuries of promethium-147 per watch dial or 120 microcuries of promethium-  
147 per other timepiece dial; bezels when used shall be considered as part of the dial.  
(vii) The levels of radiation from hands and dials containing promethium-147 will not  
exceed, when measured through 50 milligrams per square centimeter of absorber, the following:  
(aa) For wrist watches, 0.1 millirad per hour at 10 centimeters from any surface.  
(bb) For pocket watches, 0.1 millirad per hour at 1 centimeter from any surface.  
(cc) For any other timepiece, 0.2 millirad per hour at 10 centimeters from any surface.  
(b) Timepieces or timepiece hands or dials containing not more than the following specified  
quantities of radium and meeting the following expressed conditions:  
(i) 0.15 microcuries of radium per watch.  
(ii) 0.03 microcuries of radium per watch hand.  
(iii) 0.09 microcuries of radium per watch dial.  
(iv) 0.20 microcuries of radium per clock.  
(v) 0.04 microcuries of radium per clock hand.  
(vi) 0.12 microcuries of radium per clock dial.  
(vii) The timepiece is not a pocket watch.  
(viii) Timepieces or timepiece hands or dials containing radium that were manufactured  
before the effective date of these rules.  
(ix) The timepiece is marked or coded to identify the date of manufacture and that it  
contains radium.  
(x) The timepiece emits sufficient luminosity, omitting photoactivation, that its dial can be  
read in the dark during its entire design lifetime.  
(c) Lock illuminators containing not more than 15 millicuries of tritium or not more than 2  
millicuries of promethium-147 installed in automobile locks. The levels of radiation from each  
lock illuminator containing promethium-147 will not exceed 1 millirad per hour at 1 centimeter  
from any surface when measured through 50 milligrams per square centimeter of absorber.  
(d) Precision balances containing not more than 1 millicurie of tritium per balance or not  
more than 0.5 millicurie of tritium per balance part.  
(e) Automobile shift quadrants containing not more than 25 millicuries of tritium.  
(f) Marine compasses containing not more than 750 millicuries of tritium gas and other  
marine navigational instruments containing not more than 250 millicuries of tritium gas.  
(g) Thermostat dials and pointers containing not more than 25 millicuries of tritium per  
thermostat.  
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(h) Electron tubes, including spark gap tubes, power tubes, gas tubes including glow lamps,  
receiving tubes, microwave tubes, indicator tubes, pick-up tubes, radiation detection tubes and  
any other completely sealed tube that is designed to conduct or control electrical currents, if the  
level of radiation due to radioactive material contained in each electron tube does not exceed 1  
millirad per hour at 1 centimeter from any surface when measured through 7 milligrams per  
square centimeter of absorber and if each tube does not contain more than 1 of the following  
specified quantities of radioactive materials:  
(i) 150 millicuries of tritium per microwave receiver protector tube or 10 millicuries of  
tritium per any other electron tube.  
(ii) 1 microcurie of cobalt-60.  
(iii) 5 microcuries of nickel-63.  
(iv) 30 microcuries of krypton-85.  
(v) 5 microcuries of cesium-137.  
(vi) 30 microcuries of promethium-147.  
(i) Ionizing radiation measuring instruments containing, for purposes of internal calibration  
or standardization, a source of radioactive material not exceeding the applicable quantity set  
forth in Rule 147.  
History: 1979 AACS; 2016 AACS.  
R 325.5071 Resins containing scandium-46 for sand consolidation in oil wells.  
Rule 71. A person is exempt from these rules to the extent that he or she owns, receives,  
acquires, possesses, uses, or transfers synthetic plastic resins containing scandium-46 which are  
designed for sand consolidation in oil wells if the resins were manufactured or imported in  
accordance with a specific license issued by the NRC, or were manufactured in accordance with  
the specifications contained in a specific license issued by the department or an agreement state  
to the manufacturer of such resins pursuant to licensing requirements equivalent to those in  
sections 32.16 and 32.17 of 10 CFR Part 32 of the regulations of the NRC. This exemption does  
not authorize the manufacturer of resins containing scandium-46.  
History: 1979 AACS; 2016 AACS.  
R 325.5072 Gas and aerosol detectors.  
Rule 72. Except for persons who manufacture, process, or produce gas and aerosol  
detectors, a person is exempt from these rules to the extent that he or she owns, receives,  
acquires, possesses, uses, or transfers the following:  
(a) Byproduct material in gas and aerosol detectors designed to protect life or property from  
fires and airborne hazards, if the detectors containing byproduct material were manufactured,  
imported, or transferred in accordance with a specific license issued by the NRC pursuant to  
section 32.26 of 10 CFR Part 32, which license authorizes the transfer of the detectors to persons  
who are exempt from regulatory requirements.  
(b) Naturally occurring material in gas and aerosol detectors designed to protect life or  
property from fires and airborne hazards, if the detectors containing naturally occurring material  
were manufactured, imported, or transferred in accordance with a specific license issued by the  
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department or an agreement state pursuant to equivalent conditions as in section 32.26 of 10 CFR  
Part 32, which license authorizes the transfer of the detectors to persons who are exempt from  
regulatory requirements.  
History: 1979 AACS; 2016 AACS.  
R 325.5073 Self-luminous products containing tritium, krypton-85, promethium-147,  
or radium-226.  
Rule 73. (1) Except for a person who manufactures, processes, or produces self-luminous  
products, a person is exempt from these regulations to the extent that he or she owns, receives,  
acquires, possesses, uses, or transfers the following:  
(a) Tritium, krypton-85, or promethium-147 in self-luminous products manufactured,  
processed, imported, or transferred in accordance with a specific license issued by the NRC  
pursuant to section 32.22 of 10 CFR Part 32, which license authorizes the transfer of the product  
to persons who are exempt from regulatory requirements.  
(b) Naturally occurring material in self-luminous products manufactured, processed,  
imported, or transferred in accordance with a specific license issued by the department or an  
agreement state pursuant to equivalent conditions as in section 32.22 of 10 CFR Part 32.  
(2) The exemptions in subrule (1) of this rule do not apply to tritium, krypton-85,  
promethium-147, or naturally occurring material used in products for frivolous purposes or in  
toys or adornments.  
History: 1979 AACS; 2016 AACS.  
EXEMPTIONS  
RADIOACTIVE MATERIAL OTHER THAN SOURCE MATERIAL  
R 325.5074 Exempt quantities.  
Rule 74. (1) Except as provided in subrules (3) and (4) of this rule, a person is exempt from  
these rules to the extent that he or she owns, receives, acquires, possesses, uses, or transfers a  
byproduct, naturally occurring, or accelerator material in individual quantities each of which  
does not exceed the applicable quantity set forth in Rule 147.  
(2) A person who possesses radioactive material formerly received or acquired under the  
general license provided in 10 CFR Part 31, § 31.4 of the NRC regulations is exempt from the  
requirements for a license set forth in this part to the extent that he or she owns, possesses, uses,  
or transfers such radioactive material.  
(3) Subrule (1) of this rule does not authorize the production, packaging, or repackaging of  
radioactive material for purposes of commercial distribution, or the incorporation of radioactive  
material into products intended for commercial distribution.  
(4) A person, for purposes of commercial distribution, shall not transfer radioactive material  
in the individual quantities set forth in Rule 147, knowing or having reason to believe that such  
quantities of radioactive material will be transferred to persons exempt under subrule (1) of this  
rule or equivalent regulations of the NRC or an agreement state, except in accordance with a  
specific license issued by the NRC pursuant to section 32.18 of 10 CFR Part 32 which license  
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states that the radioactive material may be transferred by the licensee to persons exempt under  
subrule (1) of this rule or the equivalent regulations of the NRC or an agreement state.  
History: 1979 AACS; 2016 AACS.  
GENERAL LICENSES  
R 325.5081 Types of licenses.  
Rule 81. Licenses for radioactive materials are of 2 types: general or specific. General  
licenses provided in this part are effective without the filing of applications with the department  
or the issuance of licensing documents to particular persons. Specific licenses are issued to  
named persons upon applications filed pursuant to this part.  
History: 1979 AACS; 2016 AACS.  
R 325.5082 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5083 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5084 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5085 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5086 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5087 Ownership of radioactive material.  
Rule 87. This rule is a general license issued to own radioactive material without regard to  
quantity. Notwithstanding any other provisions of this part, this general license does not  
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authorize the manufacture, production, transfer, receipt, possession, or use of radioactive  
material.  
History: 1979 AACS; 2016 AACS.  
R 325.5088 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5089 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5090 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5091 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5092 Rescinded.  
History: 1979 AACS; 2016 AACS.  
SPECIFIC LICENSES  
R 325.5101 Applications.  
Rule 101. (1) An application for a specific license shall be filed on a form prescribed by the  
department and shall be accompanied by the appropriate license fee as specified in Rules 141 to  
145.  
(2) The application shall be signed by the applicant or licensee or a person authorized to act  
for and on his or her behalf.  
(3) An application for a license may include a request for a license authorizing 1 or more  
activities.  
(4) In his or her application, the applicant may incorporate by reference information  
contained in previous applications, statements, or reports filed with the department if the  
references are clear and specific.  
(5) The department, at any time after the filing of the original application, and before the  
expiration of the license, may require further statements in order for the department to determine  
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whether the application will be granted or denied or whether a license will be modified or  
revoked.  
(6) The department may make available the application and documents submitted to the  
department for public inspection except that the department may withhold any document or part  
thereof from public inspection if disclosure of its content is not required in the public interest and  
would adversely affect the interest of a person concerned.  
History: 1979 AACS; 2016 AACS.  
R 325.5102 General requirements for specific licenses.  
Rule 102. The department shall approve a license application if it determines all of the  
following:  
(a) The applicant or the designated individual user is qualified by reason of training and  
experience to use the material in question for the purpose requested in accordance with these  
rules in such a manner as to minimize danger to public health and safety or property.  
(b) The applicant's proposed equipment, facilities, and procedures are adequate to minimize  
danger to public health and safety or property.  
(c) The issuance of the license will not be inimical to the health and safety of the public.  
(d) The applicant satisfies any applicable special requirements in Rule 117a.  
History: 1979 AACS; 2016 AACS.  
R 325.5103 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5104 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5105 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5106 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5107 Rescinded.  
History: 1979 AACS; 2016 AACS.  
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R 325.5108 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5109 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5110 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5111 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5111a Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5111b Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5111c Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5112 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5113 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5114 Rescinded.  
History: 1979 AACS; 2016 AACS.  
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R 325.5115 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5116 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5117 Rescinded.  
History: 1979 AACS; 2016 AACS.  
SPECIAL REQUIREMENTS FOR ISSUANCE OF CERTAIN SPECIFIC LICENSES  
R 325.5117a Particle accelerator licenses.  
Rule 117a. (1) A particle accelerator capable of producing radioactive material in excess of  
exempt quantities listed in schedule B of Rule 147 shall not be operated in a manner likely to  
produce such quantities of radioactive material unless a person is authorized to operate in a  
specific license issued pursuant to this rule.  
(2) Subject to Rule 122 a person shall submit an application for a specific license to operate  
a particle accelerator subject to this rule in accordance with Rule 101.  
(3) The department shall issue a specific license for a particle accelerator subject to  
licensing under this rule when it determines all of the following:  
(a) The applicant will have an adequate program for training accelerator operators and  
submits to the department a schedule or description of the program which specifies the  
following:  
(i) Initial training.  
(ii) Periodic training.  
(iii) On-the-job training.  
(iv) Means to be used by the licensee to determine the operator's knowledge and  
understanding of and ability to comply with department rules and licensing requirements, and the  
operating and emergency procedures of the applicant.  
(b) The applicant has established and submits to the department satisfactory written  
operating and emergency procedures.  
(c) The applicant will have an adequate internal inspection system, or other management  
control, to assure that license provisions, rules, and the applicant's operating and emergency  
procedures are followed by operators and all other individuals associated with the accelerator  
operation.  
(d) The applicant submits to the department a description of his or her overall organizational  
structure pertaining to the particle accelerator program, including specified delegations of  
authority and responsibility for operation of the program.  
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(e) The applicant has applied for or has been issued a valid license to own, receive, acquire,  
possess, use, and transfer radioactive material produced or used in connection with accelerator  
operation.  
History: 1979 AACS; 2016 AACS.  
R 325.5118 Issuance of specific licenses.  
Rule 118. (1) As used in this rule, "as it deems appropriate or necessary" means as the  
department determines is appropriate or necessary in order to minimize danger to public health  
and safety or property; and prevent loss or theft of material subject to this part.  
(2) Upon a determination that an application meets the requirements of the act and these  
rules the department shall issue a specific license authorizing the proposed activity in such form  
and containing such conditions and limitations as it deems appropriate or necessary.  
(3) The department may incorporate in any license at the time of issuance, or thereafter, by  
appropriate rule or order, such additional requirements and conditions with respect to the  
licensee's receipt, possession, use, and transfer of radioactive material subject to this part as it  
deems appropriate or necessary.  
(4) The department may require such reports and the keeping of such records, and may  
provide for such inspections of activities under the license as it deems appropriate or necessary.  
History: 1979 AACS; 2016 AACS.  
R 325.5119 Specific terms and conditions of licenses.  
Rule 119. (1) A license issued under this part is subject to all the provisions of the act, now  
or hereafter in effect, and to all rules and orders of the department.  
(2) A license issued or granted under this part and a right to possess or utilize radioactive  
material granted by a license issued under this part shall not be transferred, assigned, or in any  
manner disposed of, either voluntarily or involuntarily, directly or indirectly, through transfer of  
control of any license to any person unless the department, after securing full information, finds  
that the transfer is in accordance with the provisions of the act, and gives its consent in writing.  
(3) A person licensed by the department under this part shall confine his or her use and  
possession of the material licensed to the locations and purposes authorized in the license.  
History: 1979 AACS; 2016 AACS.  
R 325.5120 Expiration, renewal, and amendment of licenses.  
Rule 120. (1) Except as provided in subrule (3) of this rule, each specific license expires at  
the end of the day, in the months and year stated therein.  
(2) An application for renewal of a specific license shall be filed in accordance with Rule  
101.  
(3) If a licensee, not less than 30 days before expiration of his or her existing license, has  
filed an application in proper form for renewal or for a new license authorizing the same  
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activities, the existing license does not expire until the application has been finally determined by  
the department.  
(4) An application for amendment of a license shall be filed in accordance with Rule 101  
and shall specify the respects in which the licensee desires his or her license to be amended and  
the grounds for such amendment.  
(5) In considering an application by a licensee to renew or amend his or her license, the  
department shall apply the criteria set forth in Rules 102 and 117a.  
History: 1979 AACS; 2016 AACS.  
R 325.5121 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5122 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5123 Transfer of material.  
Rule 123. (1) A licensee shall not transfer radioactive material except as authorized  
pursuant to this rule.  
(2) Preparation for shipment and transport of radioactive material shall be in accordance  
with the provisions of Rule 255.  
(3) A licensee may transfer radioactive material to the following:  
(a) The department.  
(b) The NRC.  
(c) A person exempt from the rules in this part to the extent permitted under the exemption.  
(d) A person authorized to receive the material under terms of a general license or its  
equivalent, or a specific license or equivalent licensing document, issued by the department, the  
NRC, or an agreement state, or to a person otherwise authorized to receive the material by the  
federal government or any agency thereof, the department, or an agreement state.  
(e) As otherwise authorized by the department in writing.  
History: 1979 AACS; 2016 AACS.  
R 325.5124 Modification, revocation, and termination of licenses.  
Rule 124. (1) The terms and conditions of a license are subject to amendment, revision, or  
modification or the license may be suspended or revoked by reason of amendments to the act, or  
by reason of rules and orders issued by the department.  
(2) A license may be revoked, suspended, or modified, in whole or in part, for the  
following:  
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(a) A material false statement in the application or any statement of fact required under the  
(b) A condition revealed by the application or statement of fact or any report, record, or  
act.  
inspection or other means which would warrant the department to refuse to grant a license on an  
original application.  
(c) A violation of, or failure to observe, any of the terms and conditions of the act, the  
license, or any rule or order of the department.  
(3) Except in a case of willfulness or where the public health, interest, or safety requires  
otherwise, a license shall not be modified, suspended, or revoked unless, before the institution of  
proceedings therefor, facts or conduct which may warrant the action have been called to the  
attention of the license in writing and the licensee has been accorded an opportunity to  
demonstrate or achieve compliance with all lawful requirements.  
(4) The department may terminate a specific license upon request submitted by the licensee  
to the department in writing.  
History: 1979 AACS; 2016 AACS.  
R 325.5125 Environmental impact report.  
Rule 125. An application for a license to receive and possess radioactive material for  
commercial waste disposal by land burial in this state or for the conduct of any other activity  
which the department determines will significantly affect the quality of the environment shall be  
filed at least 9 months before the beginning of construction of the plant or facility in which the  
activity will be conducted and shall be accompanied by an environmental report. The report shall  
contain information similar to the information specified in Rules 212 and 238.  
History: 1979 AACS; 2016 AACS.  
RECIPROCITY  
R 325.5131 General license for limited period.  
Rule 131. This rule is a general license issued to a person who holds a specific license from  
the NRC or an agreement state issued by the agency having jurisdiction where the licensee  
maintains an office for directing the licensed activity and at which radiation safety records are  
normally maintained, to conduct the activities authorized in the license in this state for a period  
not in excess of 180 days in any calendar year if all of the following conditions are met:  
(a) The license does not limit the activity authorized by it to specified installations or  
locations.  
(b) The licensee notifies the department in writing at least 3 days prior to engaging in the  
activity. The notification shall indicate the location, period, and type of proposed possession and  
use within this state, and shall be accompanied by a copy of the pertinent license. If, for a  
specific case, the 3-day period would impose an undue hardship on the licensee, he or she may  
obtain permission to proceed sooner upon application to the department. The department may  
waive the requirement for filing additional written notifications during the remainder of the  
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calendar year following the receipt of the initial notification from a person engaging in activities  
under the general license provided in this rule.  
(c) The licensee complies with all applicable rules of the department and with all the terms  
and conditions of his or her license, except terms and conditions which may be inconsistent with  
applicable rules of the department.  
(d) The licensee supplies such other information as the department may request.  
(e) The licensee does not transfer or dispose of radioactive material possessed or used under  
the general license provided in this rule except by transfer to a person specifically licensed by the  
department or by the NRC to receive such material, or exempt from the requirements for a  
license for such material under Rule 65.  
History: 1979 AACS; 2016 AACS.  
Editor's Note: An obvious error in R 325.5131 was corrected at the request of the promulgating agency,  
pursuant to Section 56 of 1969 PA 306, as amended by 2000 PA 262, MCL 24.256. The rule containing the error  
was published in Michigan Register, 2016 MR 10. The memorandum requesting the correction was published in  
Michigan Register, 2016 MR 16.  
R 325.5132 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5133 Limited acceptance of reciprocal licenses.  
Rule 133. The department may withdraw, limit, or qualify its acceptance of a specific  
license or equivalent licensing document issued by another agency, or any product distributed  
pursuant to such licensing document, upon determining that the action is necessary to prevent  
undue hazard to public health and safety or property.  
History: 1979 AACS; 2016 AACS.  
LICENSE FEES  
R 325.5141 Application fees.  
Rule 141. (1) A license application for which a fee is prescribed in Rule 144 shall be  
accompanied by a remittance in the full amount of the fee unless the applicant has been  
exempted from fee payment under Rule 143.  
(2) An application will not be accepted for filing or processed before payment of the full  
amount specified unless exempted from fee payment. An application for which a remittance is  
not received may be returned to the applicant.  
(3) All application fees shall be retained irrespective of the department's disposition of the  
application or a withdrawal of the application.  
(4) The application fee serves as the license fee for the first year after issuance of the license  
irrespective of the time interval between date of application and date of issuance.  
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History: 1979 AACS; 2016 AACS.  
R 325.5142. Annual fees.  
Rule 142. (1) An annual license fee is payable 1 year after the date of issuance of the  
license and annually thereafter.  
(2) The annual fee shall be submitted in a timely manner so that its receipt is assured on  
or before the due date in order to maintain the license in effect.  
History: 1979 AACS..  
R 325.5143 Exemptions.  
Rule 143. (1) Application fees or annual fees are not required for licenses applied for by, or  
issued to the following:  
(a) An agency of this state or any political subdivision thereof for radioactive material or  
accelerators to be used primarily for services rendered on a charitable basis or in connection with  
a facility used primarily for charitable purposes.  
(b) A nonprofit educational institution for radioactive material or accelerators to be used  
exclusively for teaching or training purposes or in connection with a facility used exclusively for  
teaching or training purposes.  
(2) Application fees or annual fees are not required for licenses authorizing the use of  
source material as shielding only in devices and containers, but all other licensed radioactive  
material in the device or container is subject to the fees prescribed in Rule 144 unless otherwise  
exempted under this rule.  
History: 1979 AACS; 2016 AACS.  
R 325.5144 Fee schedule.  
Rule 144. Applicants for specific radioactive material licenses and licensees issued these  
licenses shall pay the appropriate license fees and shall be subject to the footnotes specified in  
the following fee schedule unless exempted under Rule 143.  
SCHEDULE OF RADIOACTIVE MATERIAL LICENSE FEES  
Category of License 1  
Application Fee 2  
Annual Fee3 4  
1. Radioactive Material Other than Special Nuclear,  
Byproduct, or Source Material:  
A. All other specific radioactive material licenses except  
those in categories 2A or 2B.  
$50.00  
$50.00  
2. Waste Disposal:  
A. Waste disposal licenses specifically authorizing the receipt  
of waste radioactive material from other persons for the  
purpose of commercial disposal by the waste disposal licensee  
by land burial.  
$3,000.00  
$3,000.00  
Page 27  
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Category of License 1  
Application Fee 2  
$400.00  
Annual Fee3 4  
$400.00  
B. Waste disposal licenses specifically authorizing the receipt  
of waste radioactive material from other persons for the  
purpose of commercial disposal by the waste disposal licensee  
by transfer to another person authorized to receive such  
material.  
FOOTNOTES  
to  
SCHEDULE OF RADIOACTIVE MATERIAL LICENSE FEES  
1
Amendments based on applications filed after the due date of the annual license fee reducing  
the scope of a licensee's program or cancelling a license, will not entitle the licensee to a  
partial refund of an annual fee that has been paid by the licensee for the year in which such  
amendment or cancellation occurs. Applications for amendments increasing the scope of a  
program to a higher fee category will not be accepted for filing unless accompanied by the  
prescribed fee less the amount of the currently prescribed fee for the activities already  
licensed.  
2
3
Applications for specific licenses covering more than 1 fee category shall be accompanied by  
the prescribed fee for each category.  
Payment of the prescribed annual fee does not automatically renew the license for which the  
fee is paid. Renewal applications shall be filed in accordance with the requirements of Rule  
120. Applications for reissuance of licenses that have expired because a timely renewal  
application was not filed shall be accompanied by the prescribed application fee.  
4
The annual fee will be waived where an application is filed to cancel the license prior to the  
due date of the annual fee, and the amount of the annual fee will be reduced where an  
application is filed to amend the license to reduce its scope before the due date of the annual  
fee. However, an annual fee will not be waived or reduced unless the application filed before  
the due date of the fee contains all the information necessary to permit the department to  
complete the requested action  
History: 1979 AACS; 2016 AACS.  
R 325.5145 Payment of fees.  
Rule 145. (1) License fee payments shall be by check, draft, or money order payable to the  
"State of Michigan".  
(2) In any case where the department finds that a licensee has failed to pay the applicable  
annual fee required in this part, the department may suspend or revoke the license or may issue  
such order with respect to licensed activities as the department determines to carry out these  
rules and the act.  
History: 1979 AACS; 2016 AACS.  
Page 28  
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SCHEDULES A AND B  
R 325.5146 Schedule A - Exempt concentrations.  
Rule 146. See Rule 65.  
Column II  
Liquid and  
solid  
concentration  
µCi/ml**  
Column I Gas  
concentration  
µCi/ml*  
Element (atomic number)  
Radionuclide  
Antimony (51)  
Sb 122  
Sb 124  
Sb 125  
Ar 37  
3 x 10-4  
2 x 10-4  
1 x 10-3  
Argon (18)  
1 x 10-3  
4 x 10-7  
Ar 41  
Arsenic (33)  
As 73  
As 74  
As 76  
As 77  
Ba 131  
Ba 140  
Be 7  
Bi 206  
Br 82  
Cd 109  
Cd 115m  
Cd 115  
Ca 45  
5 x 10-3  
5 x 10-4  
2 x 10-4  
8 x 10-4  
2 x 10-3  
3 x 10-4  
2 x 10-2  
4 x 10-4  
3 x 10-3  
2 x 10-3  
3 x 10-4  
3 x 10-4  
9 x 10-5  
5 x 10-4  
8 x 10-3  
9 x 10-4  
4 x 10-4  
1 x 10-4  
2 x 10-2  
6 x 10-2  
9 x 10-5  
4 x 10-3  
2 x 10-2  
5 x 10-3  
1 x 10-3  
5 x 10-4  
3 x 10-3  
4 x 10-3  
4 x 10-4  
Barium (56)  
Beryllium (4)  
Bismuth (83)  
Bromine (35)  
Cadmium (48)  
4 x 10-7  
Calcium (20)  
Ca 47  
C 14  
Carbon (6)  
Cerium (58)  
1 x 10-6  
Ce 141  
Ce 143  
Ce 144  
Cs 131  
Cs 134m  
Cs 134  
Cl 38  
Cesium (55)  
Chlorine (17)  
Chromium (24)  
Cobalt (27)  
9 x 10-7  
Cr 51  
Co 57  
Co 58  
Co 60  
Cu 64  
Dy 165  
Dy 166  
Copper (29)  
Dysprosium (66)  
Page 29  
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Column II  
Liquid and  
solid  
concentration  
µCi/ml**  
Column I Gas  
concentration  
µCi/ml*  
Element (atomic number)  
Radionuclide  
Erbium (68)  
Er 169  
Er 171  
Eu 152  
9 x 10-4  
1 x 10-3  
6 x 10-4  
Europium (63)  
(T1/2=9.2 hrs)  
Eu 155  
F 18  
2 x 10-3  
8 x 10-3  
2 x 10-3  
8 x 10-4  
4 x 10-4  
2 x 10-2  
2 x 10-3  
5 x 10-4  
2 x 10-3  
7 x 10-4  
3 x 10-2  
1 x 10-2  
2 x 10-4  
2 x 10-5  
2 x 10-5  
6 x 10-4  
7 x 10-5  
1 x 10-3  
2 x 10-3  
4 x 10-4  
3 x 10-4  
8 x 10-3  
6 x 10-4  
Fluorine (9)  
Gadolinium (64)  
2 x 10-6  
Gd 153  
Gd 159  
Ga 72  
Ge 71  
Au 196  
Au 198  
Au 199  
Hf 181  
H 3  
In 113m  
In 114m  
I 126  
I 131  
I 132  
I 133  
I 134  
Ir 190  
Ir 192  
Ir 194  
Fe 55  
Fe 59  
Kr 85m  
Kr 85  
Gallium (31)  
Germanium (32)  
Gold (79)  
Hafnium (72)  
Hydrogen (1)  
Indium (49)  
5 x 10-6  
Iodine (53)  
3 x 10-9  
3 x 10-9  
8 x 10-8  
1 x 10-8  
2 x 10-7  
Iridium (77)  
Iron (26)  
Krypton (36)  
1 x 10-6  
3 x 10-6  
Lanthanum (57)  
Lead (82)  
Lutetium (71)  
Manganese (25)  
La 140  
Pb 203  
Lu 177  
Mn 52  
Mn 54  
Mn 56  
Hg 197m  
Hg 197  
Hg 203  
Mo 99  
2 x 10-4  
4 x 10-3  
1 x 10-3  
3 x 10-4  
1 x 10-3  
1 x 10-3  
2 x 10-3  
3 x 10-3  
2 x 10-4  
2 x 10-3  
Mercury (80)  
Molybdenum (42)  
Page 30  
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Column II  
Liquid and  
solid  
concentration  
µCi/ml**  
Column I Gas  
concentration  
µCi/ml*  
Element (atomic number)  
Neodymium (60)  
Radionuclide  
Nd 147  
Nd 149  
Ni 65  
Nb 95  
Nb 97  
6 x 10-4  
3 x 10-3  
1 x 10-3  
1 x 10-3  
9 x 10-3  
7 x 10-4  
3 x 10-2  
2 x 10-3  
6 x 10-4  
3 x 10-3  
9 x 10-4  
2 x 10-4  
1 x 10-3  
1 x 10-2  
1 x 10-2  
1 x 10-3  
7 x 10-6  
3 x 10-3  
3 x 10-4  
5 x 10-4  
2 x 10-3  
4 x 10-4  
1 x 10-7  
3 x 10-7  
1 x 10-8  
1 x 10-7  
6 x 10-3  
9 x 10-4  
6 x 10-4  
1 x 10-1  
1 x 10-3  
7 x 10-4  
4 x 10-3  
8 x 10-4  
1 x 10-3  
1 x 10-4  
8 x 10-4  
4 x 10-4  
9 x 10-4  
3 x 10-4  
Nickel (28)  
Niobium (41)  
(Columbium)  
Osmium (76)  
Os 185  
Os 191m  
Os 191  
Os 193  
Pd 103  
Pd 109  
P 32  
Pt 191  
Pt 193m  
Pt 197m  
Pt 197  
Po 210  
K 42  
Pr 142  
Pr 143  
Pm 147  
Pm 149  
Ra 226  
Ra 228  
Rn 220  
Rn 222  
Re 183  
Re 186  
Re 188  
Rh 103m  
Rh 105  
Rb 86  
Palladium (46)  
Phosphorous (15)  
Platinum (78)  
Polonium (84)  
Potassium (19)  
Praseodymium(59)  
Promethium (61)  
Radium (88)  
Radon (86)  
Rhenium (75)  
Rhodium (45)  
Rubidium (37)  
Ruthenium (44)  
Ru 97  
Ru 103  
Ru 105  
Ru 106  
Sm 153  
Sc 46  
Samarium (62)  
Scandium (21)  
Sc 47  
Sc 48  
Page 31  
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Column II  
Liquid and  
solid  
concentration  
µCi/ml**  
Column I Gas  
concentration  
µCi/ml*  
Element (atomic number)  
Radionuclide  
Selenium (34)  
Silicon (14)  
Silver (47)  
Se 75  
Si 31  
Ag 105  
Ag 110m  
Ag 111  
Na 24  
Sr 85  
Sr 89  
Sr 91  
Sr 92  
3 x 10-3  
9 x 10-3  
1 x 10-3  
3 x 10-4  
4 x 10-4  
2 x 10-3  
1 x 10-3  
1 x 10-4  
7 x 10-4  
7 x 10-4  
6 x 10-4  
4 x 10-4  
1 x 10-1  
1 x 10-3  
2 x 10-3  
6 x 10-4  
3 x 10-3  
3 x 10-4  
6 x 10-4  
3 x 10-4  
4 x 10-4  
4 x 10-3  
3 x 10-3  
1 x 10-3  
1 x 10-3  
5 x 10-4  
5 x 10-3  
9 x 10-4  
2 x 10-4  
4 x 10-3  
7 x 10-4  
3 x 10-4  
Sodium (11)  
Strontium (38)  
Sulfur (16)  
Tantalum (73)  
Technetium (43)  
S 35  
9 x 10-8  
Ta 182  
Tc 96m  
Tc 96  
Tellurium (52)  
Te 125m  
Te 127m  
Te 127  
Te 129m  
Te 131m  
Te 132  
Tb 160  
Tl 200  
Tl 201  
Tl 202  
Tl 204  
Tm 170  
Tm 171  
Sn 113  
Sn 125  
W 181  
W 187  
V 48  
Terbium (65)  
Thallium (81)  
Thulium (69)  
Tin (50)  
Tungsten (74)  
(Wolfram)  
Vanadium (23)  
Xenon (54)  
Xe 131m  
Xe 133  
Xe 135  
Yb 175  
4 x 10-6  
3 x 10-6  
1 x 10-6  
Ytterbium (70)  
1 x 10-3  
Page 32  
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Column II  
Liquid and  
solid  
concentration  
µCi/ml**  
Column I Gas  
concentration  
µCi/ml*  
Element (atomic number)  
Yttrium (39)  
Radionuclide  
Y 90  
Y 91m  
Y 91  
Y 92  
Y 93  
Zn 65  
Zn 69m  
Zn 69  
Zr 95  
Zr 97  
2 x 10-4  
3 x 10-2  
3 x 10-4  
6 x 10-4  
3 x 10-4  
1 x 10-3  
7 x 10-4  
2 x 10-2  
6 x 10-4  
2 x 10-4  
1 x 10-6  
Zinc (30)  
Zirconium (40)  
Beta and/or gamma  
emitting radioactive  
material not listed above  
with half-life less than 3  
years.  
1 x 10-10  
* Values are given in Column 1 only for those materials normally used as gases.  
** µCi/gm for solids.  
NOTE 1: Many radionuclides disintegrate into nuclides which are also radioactive. In  
expressing the concentrations in Schedule A the activity stated is that of the parent nuclide and  
takes into account the daughters.  
NOTE 2: For purposes of Rule 65 where there is involved a combination of nuclides, the  
limit for the combination should be derived as follows: Determine for each nuclide in the product  
the ratio between the concentration present in the product and the exempt concentration  
established in Schedule A for the specific nuclide when not in combination. The sum of such  
ratios may not exceed "1" (i.e., unity).  
EXAMPLE:  
Concentration of Nuclide A in Product  
Exempt concentration of Nuclide A  
Concentration of Nuclide B in Product  
Exempt concentration of Nuclide B  
1  
+
History: 1979 AACS; 2016 AACS.  
R 325.5147 Schedule B - Exempt quantities.  
Rule 147. See Rule 74.  
Radionuclide  
Microcuries  
Antimony 122 (Sb 122)  
Antimony 124 (Sb 124)  
100  
10  
Page 33  
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Antimony 125 (Sb 125)  
Arsenic 73 (As 73)  
Arsenic 74 (As 74)  
10  
100  
10  
Arsenic 76 (As 76)  
10  
Arsenic 77 (As 77)  
100  
10  
10  
10  
1
Barium 131 (Ba 131)  
Barium 133 (Ba 133)  
Barium 140 (Ba 140)  
Bismuth 210 (Bi 210)  
Bromine 82 (Br 82)  
10  
Cadmium 109 (Cd 109)  
Cadmium 115m (Cd 115m)  
Cadmium 115 (Cd 115)  
Calcium 45 (Ca 45)  
10  
10  
100  
10  
Calcium 47 (Ca 47)  
10  
Carbon 14 (C 14)  
100  
100  
100  
1
1,000  
100  
1
10  
10  
10  
10  
Cerium 141 (Ce 141)  
Cerium 143 (Ce 143)  
Cerium 144 (Ce 144)  
Cesium 131 (Cs 131)  
Cesium 134m (Cs 134m)  
Cesium 134 (Cs 134)  
Cesium 135 (Cs 135)  
Cesium 136 (Cs 136)  
Cesium 137 (Cs 137)  
Chlorine 36 (Cl 36)  
Chlorine 38 (Cl 38)  
10  
Chromium 51 (Cr 51)  
Cobalt 58m (Co 58m)  
Cobalt 58 (Co 58)  
1,000  
10  
10  
Cobalt 60 (Co 60)  
1
Copper 64 (Cu 64)  
100  
10  
Dysprosium 165 (Dy 165)  
Dysprosium 166 (Dy 166)  
Erbium 169 (Er 169)  
Erbium 171 (Er 171)  
Europium 152 (Eu 152) 9.2 h  
Europium 152 (Eu 152) 13 yr  
Europium 154 (Eu 154)  
Europium 155 (Eu 155)  
Fluorine 18 (F 18)  
100  
100  
100  
100  
1
1
10  
1,000  
10  
100  
10  
Gadolinium 153 (Gd 153)  
Gadolinium 159 (Gd 159)  
Gallium 72 (Ga 72)  
Page 34  
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Germanium 71 (Ge 71)  
Gold 198 (Au 198)  
Gold 199 (Au 199)  
100  
100  
100  
10  
100  
1,000  
100  
10  
Hafnium 181 (Hf 181)  
Holmium 166 (Ho 166)  
Hydrogen 3 (H 3)  
Indium 113m (In 113m)  
Indium 114m (In 114m)  
Indium 115m (In 115m)  
Indium 115 (In 115)  
Iodine 125 (I 125)  
100  
10  
1
Iodine 126 (I 126)  
1
Iodine 129 (I 129)  
Iodine 131 (I 131)  
0.1  
1
Iodine 132 (I 132)  
10  
Iodine 133 (I 133)  
1
Iodine 134 (I 134)  
10  
Iodine 135 (I 135)  
10  
Iridium 192 (Ir 192)  
Iridium 194 (Ir 194)  
Iron 55 (Fe 55)  
10  
100  
100  
10  
Iron 59 (Fe 59)  
Krypton 85 (Kr 85)  
Krypton 87 (Kr 87)  
Lanthanum 140 (La 140)  
Lutetium 177 (Lu 177)  
Manganese 52 (Mn 52)  
Manganese 54 (Mn 54)  
Manganese 56 (Mn 56)  
Mercury 197m (Hg 197m)  
Mercury 197 (Hg 197)  
Mercury 203 (Hg 203)  
Molybdenum 99 (Mo 99)  
Neodymium 147 (Nd 147)  
Neodymium 149 (Nd 149)  
Nickel 59 (Ni 59)  
100  
10  
10  
100  
10  
10  
10  
100  
100  
10  
100  
100  
100  
100  
10  
Nickel 63 (Ni 63)  
Nickel 65 (Ni 65)  
100  
10  
10  
10  
10  
Niobium 93m (Nb 93m)  
Niobium 95 (Nb 95)  
Niobium 97 (Nb 97)  
Osmium 185 (Os 185)  
Osmium 191m (Os 191m)  
Osmium 191 (Os 191)  
100  
100  
Page 35  
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Osmium 193 (Os 193)  
Palladium 103 (Pd 103)  
Palladium 109 (Pd 109)  
Phosphorus 32 (P 32)  
Platinum 191 (Pt 191)  
Platinum 193m (Pt 193m)  
Platinum 193 (Pt 193)  
Platinum 197m (Pt 197m)  
Platinum 197 (Pt 197)  
Polonium 210 (Po 210)  
Potassium 42 (K 42)  
100  
100  
100  
10  
100  
100  
100  
100  
100  
0.1  
10  
Praseodymium 142 (Pr 142)  
Praseodymium 143 (Pr 143)  
Promethium 147 (Pm 147)  
Promethium 149 (Pm 149)  
Rhenium 186 (Re 186)  
Rhenium 188 (Re 188)  
Rhodium 103m (Rh 103m)  
Rhodium 105 (Rh 105)  
Rubidium 86 (Rb 86)  
Rubidium 87 (Rb 87)  
Ruthenium 97 (Ru 97)  
Ruthenium 103 (Ru 103)  
Ruthenium 105 (Ru 105)  
Ruthenium 106 (Ru 106)  
Samarium 151 (Sm 151)  
Samarium 153 (Sm 153)  
Scandium 46 (Sc 46)  
Scandium 47 (Sc 47)  
Scandium 48 (Sc 48)  
Selenium 75 (Se 75)  
100  
100  
10  
10  
100  
100  
100  
100  
10  
10  
100  
10  
10  
1
10  
100  
10  
100  
10  
10  
Silicon 31 (Si 31)  
Silver 105 (Ag 105)  
100  
10  
Silver 110m (Ag 110m)  
Silver 111 (Ag 111)  
Sodium 24 (Na 24)  
1
100  
10  
Strontium 85 (Sr 85)  
Strontium 89 (Sr 89)  
Strontium 90 (Sr 90)  
Strontium 91 (Sr 91)  
Strontium 92 (Sr 92)  
Sulphur 35 (S 35)  
10  
1
0.1  
10  
10  
100  
10  
10  
Tantalum 182 (Ta 182)  
Technetium 96 (Tc 96)  
Page 36  
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Technetium 97m (Tc 97m)  
Technetium 97 (Tc 97)  
Technetium 99m (Tc 99m)  
Technetium 99 (Tc 99)  
Tellurium 125m (Te 125m)  
Tellurium 127m (Te 127m)  
Tellurium 127 (Te 127)  
Tellurium 129m (Te 129m)  
Tellurium 129 (Te 129)  
Tellurium 131m (Te 131m)  
Tellurium 132 (Te 132)  
Terbium 160 (Tb 160)  
Thallium 200 (Tl 200)  
Thallium 201 (Tl 201)  
Thallium 202 (Tl 202)  
Thallium 204 (Tl 204)  
Thulium 170 (Tm 170)  
Thulium 171 (Tm 171)  
Tin 113 (Sn 113)  
100  
100  
100  
10  
10  
10  
100  
10  
100  
10  
10  
10  
100  
100  
100  
10  
10  
10  
10  
Tin 125 (Sn 125)  
10  
Tungsten 181 (W 181)  
Tungsten 185 (W 185)  
Tungsten 187 (W 187)  
Vanadium 48 (V 48)  
Xenon 131m (Xe 131m)  
Xenon 133 (Xe 133)  
Xenon 135 (Xe 135)  
Ytterbium 175 (Yb 175)  
Yttrium 90 (Yb 90)  
10  
10  
100  
10  
1,000  
100  
100  
100  
10  
Yttrium 91 (Yb 91)  
10  
Yttrium 92 (Yb 92)  
Yttrium 93 (Yb 93)  
Zinc 65 (Zn 65)  
100  
100  
10  
Zinc 69m (Zn 69m)  
Zinc 69 (Zn 69)  
100  
1,000  
10  
10  
10  
Zirconium 93 (Zr 93)  
Zirconium 95 (Zr 95)  
Zirconium 97 (Zr 97)  
Any radionuclide not listed  
above other than alpha  
emitting radioactive material  
0.1  
History: 1979 AACS; 2016 AACS.  
Page 37  
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R 325.5148 Rescinded.  
History: 1979 AACS; 2016 AACS.  
R 325.5149. Rescinded.  
History: 1979 AACS; 2016 AACS.  
PART 4. REGISTRATION OF RADIATION MACHINES  
R 325.5181 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5182 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5183 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5184 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5185 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5186 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5187 Rescinded.  
Page 38  
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History: 1979 AC; 2016 AACS.  
R 325.5188 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5189 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5191 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5192 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5193 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5194 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5195 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5196 Rescinded.  
History: 1979 AC; 2016 AACS.  
PART 5. STANDARDS FOR PROTECTION AGAINST RADIATION  
R 325.5201 Purpose and scope.  
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Rule 201. (1) This part establishes standards for protection against radiation hazards.  
Except as otherwise specifically provided this part applies to all licensees and registrants.  
(2) In addition to complying with requirements in this part, every reasonable effort should  
be made to maintain radiation levels in unrestricted areas and releases of radioactive materials in  
effluents to unrestricted areas, as far below the limits specified in this part as practicable. The  
term "as far below the limits specified in this part as practicable" means as low as is practicably  
achievable, taking into account the state of technology, and the economics of improvements in  
relation to benefits to the public health and safety and in relation to the use of sources of  
radiation in the public interest.  
History: 1979 AACS; 2016 AACS.  
R 325.5202 Intentional exposure of humans.  
Rule 202. (1) Nothing in these rules shall be construed as limiting the intentional exposure  
of patients to radiation for the purpose of medical diagnosis, medical therapy, or medical  
research conducted by licensed members of the healing arts.  
(2) Intentional exposure of individuals to radiation or concentrations of radioactive material  
for diagnostic or therapeutic purposes shall be limited to supervision or prescriptions by licensed  
members of the healing arts.  
History: 1979 AACS; 2016 AACS.  
PERMISSIBLE DOSES, LEVELS AND CONCENTRATIONS  
R 325.5203 Exposure of individuals to radiation.  
Rule 203. (1) Except as provided in subrules (3),(4), and (6) of this rule, a licensee or  
registrant shall not receive, possess, use, or transfer sources of radiation in a manner as to cause  
any individual to receive in any period from all sources of radiation in the licensee's or  
registrant's possession a dose in excess of the limits specified in table 1 of Rule 205. A licensee  
or registrant shall not be held liable for meeting the dose limit for fertile women (with respect to  
fetus) listed in table 1 until and unless the employee has submitted written notice to the licensee  
or registrant of the pregnant condition. Potential risk of exposure, if any, to the fetus before the  
written notice is received shall be assumed by the employee as a condition of employment as a  
radiation worker. Following receipt of written notice, the employee's dosimeter record shall be  
reviewed immediately and necessary steps shall be taken to meet the dose limit specified in table  
1 of Rule 205.  
(2) For determining the doses specified in Rules 203 to 215, a dose from x- or gamma rays  
up to 10 MeV may be assumed to be equivalent to the exposure measured by a properly  
calibrated appropriate instrument in air at or near the body surface of the region of the highest  
exposure rate.  
(3) A licensee or registrant may permit an individual in a restricted area to receive a dose to  
the whole body greater than that permitted in subrule (1) of this rule, under any of the following  
conditions:  
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(a) The annual dose does not exceed 5 rems in any 1 year and during any calendar quarter  
the dose to the whole body from sources of radiation in the licensee's or registrant's possession  
does not exceed 3 rems.  
(b) The dose to the whole body, when added to the accumulated occupational dose to the  
whole body, does not exceed 5 (N-18) rems where "N" equals the individual's age in years at his  
or her last birthday.  
(c) The licensee or registrant has determined the individual's accumulated occupational dose  
to the whole body on Form RH-101, or on a clear and legible record containing all the  
information required in that form and has otherwise complied with the requirements of Rule 206.  
(4) Upon application showing an operational need, the department may authorize radiation  
doses at a higher annual level than the limits set forth in subrule (1) of this rule, provided that the  
dose does not exceed 3 rems per quarter and that, based on the determination of the individual's  
prior radiation record, his or her accumulated occupational dose does not exceed 5 (N-18) rems  
where "N" equals the individual's age in years at his or her last birthday.  
(5) As used in this part, "dose to the whole body" includes any dose to the whole body,  
gonads, active blood-forming organs, head and trunk, or lens of the eye.  
(6) Nothing in this part shall be interpreted as limiting the exposure of members of  
emergency response teams to radiation under emergency circumstances for the purpose of  
minimizing danger to life or property. Teams may include police, fire, ambulance, and  
paramedical crews acting in the course of their assigned duties.  
History: 1979 AACS; 2016 AACS.  
R 325.5205 Dose limits.  
Rule 205. Table 1  
Maximum Permissible Dose Equivalent for Occupational Exposure  
Dose to the whole body*  
Skin of whole body  
1.25 rem per quarter  
7.5 rems per quarter  
Hands  
18.75 rems per quarter  
0.5 rem in gestation period  
Fertile women (with respect to fetus)  
Maximum Permissible Dose Equivalent for Non-Occupational Exposure  
Individual  
0.5 rem in any one year  
Population Dose Limits  
Genetic  
Somatic  
0.17 rem average per year  
0.17 rem average per year  
*If the dose distribution is not uniform the limiting dose shall be the highest dose received by  
any of the critical organs specified in subrule (5) of Rule 203.  
History: 1979 AACS; 2016 AACS.  
R 325.5206 Determination of accumulated dose.  
Rule 206. (1) This rule applies to licensees or registrants who propose, pursuant to Rule 203  
(3) or (4), to permit individuals in a restricted area to receive radiation doses in excess of the  
limits specified in table 1 of Rule 205.  
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(2) Before permitting an individual in a restricted area to be exposed to radiation in excess  
of the limits specified in table 1 of Rule 205, each licensee or registrant shall do all of the  
following:  
(a) Obtain a certificate on Form RH-101, or on a clear and legible record containing all the  
information required in that form, signed by the individual, showing each period of time after the  
individual attained the age of 18 in which the individual received an occupational dose of  
radiation.  
(b) Calculate on Form RH-101, in accordance with the instructions appearing therein, or on  
a clear and legible record containing all the information required in that form, the previously  
accumulated occupational dose received by the individual and the additional dose allowed for the  
individual under Rule 203 (3) or (4).  
(3) In the preparation of Form RH-101, or on a clear and legible record containing all the  
information required in that form, the licensee or registrant shall make a reasonable effort to  
obtain reports of the individual's previously accumulated occupational dose. For each period for  
which the licensee or registrant obtains these reports, he or she shall use the dose shown in the  
report in preparing the form. Where a licensee or registrant is unable to obtain reports of the  
individual's occupational dose for a previous complete calendar quarter, it is assumed that the  
individual has received the occupational dose specified in whichever of the following columns  
apply:  
COLUMN 1  
COLUMN 2  
Assumed Dose in Rems  
for Calendar Quarters  
Before January 1, 1961  
Assumed Dose in Rems For  
Calendar Quarters  
Beginning on or After  
January 1, 1961  
Part of Body  
Whole body, gonads, active  
blood-forming organs, head  
and trunk, lens of the eye  
3.75  
1.25  
(4) The licensee or registrant shall retain and preserve records used in preparing Form RH-  
101. If calculation of the individual's accumulated occupational dose for all periods before  
January 1, 1961 yields a result higher than the applicable accumulated dose value for the  
individual as of that date, as specified in Rule 205, the excess may be disregarded.  
History: 1979 AACS; 2016 AACS.  
R 325.5208 Exposure of individuals to radioactive material in restricted areas.  
Rule 208. (1) A licensee shall not receive, acquire, possess, use, or transfer radioactive  
material in such a manner as to cause an individual in a restricted area to be exposed to airborne  
radioactive material in an average concentration in excess of the limits specified in table I of  
appendix A in Rules 261 to 270. "Expose," as used in this rule, means that the individual is present  
in a region where an airborne concentration exist. An allowance shall not be made for the use of  
protective clothing or equipment, or particle size, except as authorized by the department pursuant  
to subrule (3) or (4) of this rule.  
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(2) The limits given in table I of appendix A in Rules 261 to 270, are based upon an  
individual being exposed to the specified concentrations for the reference period of 40 hours in  
any 7 consecutive days. In any such period where an individual has been exposed for less than  
the 40 hours, the limits specified may be increased proportionately. In any such period where an  
individual has been exposed for more than 40 hours, the limits specified in the table shall be  
decreased proportionately.  
(3) The department may authorize a licensee to expose an individual in a restricted area to  
airborne concentrations in excess of the limits specified in table I of appendix A in Rules 261 to  
270, upon receipt of an application demonstrating that the concentration is composed in whole or  
in part of particles of such size that the particles are not respirable and that the individual will not  
inhale the concentrations in excess of the limits established in the table. An application  
submitted pursuant to this subrule shall include an analysis of particle sizes in the concentrations  
and description of the methods used in determining the particle sizes.  
(4) The department may authorize a licensee to expose an individual in a restricted area to  
airborne concentrations in excess of the limits specified in table I of appendix A in Rules 261 to  
270, upon receipt of an application demonstrating that the individual will wear appropriate  
protective equipment and that the individual will not inhale, ingest, or absorb quantities of  
radioactive material in excess of those which might otherwise be permitted under this part for  
individuals in restricted areas during a 40-hour week. An application submitted pursuant to this  
subrule shall contain all of the following information:  
(a) A description of the protective equipment to be employed, including the efficiency of  
the equipment for the material involved.  
(b) Procedures for the fitting, maintenance, and cleaning of the protective equipment.  
(c) Procedures governing the use of the protective equipment, including supervisory  
procedures and length of the time the equipment will be used by the individuals in each work  
week. The proposed periods for use of the equipment by any individual should not be of such  
duration as would discourage observance by the individual of the proposed procedures.  
(d) The average concentrations present in the areas occupied by individuals.  
(e) Procedures for bio-assay evaluation of the effectiveness of the proposed protective  
safeguards.  
History: 1979 AACS; 2016 AACS.  
R 325.5209 Orders requiring furnishing of bio-assay services.  
Rule 209. Where necessary or desirable in order to aid in determining the extent to which an  
individual was or may be exposed to concentrations of radioactive material, the department may  
incorporate license provisions or issue an order requiring a licensee or registrant to make available  
to the individual appropriate bio-assay services and to furnish a copy of the reports of such services  
to the department.  
History: 1979 AACS..  
R 325.5210 Exposure of minors.  
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Rule 210. (1) A licensee or registrant shall not receive, acquire, possess, use, or transfer  
sources of radiation in a manner as to cause an individual who is under 18 years of age, to  
receive in any period of 1 calendar quarter from all sources of radiation in the licensee's or  
registrant's possession, a dose in excess of 10% of the quarterly occupational limit specified in  
Rule 205 (e.g. 125 mrems whole body).  
(2) A licensee shall not receive, acquire, possess, use, or transfer radioactive material in  
such a manner as to cause any individual in a restricted area, who is under 18 years of age, to be  
exposed to airborne radioactive material in an average concentration in excess of the limits  
specified in table II of appendix A in Rules 261 to 270. For purposes of this subrule,  
concentrations may be averaged over periods not greater than 1 week (7 consecutive days).  
(3) Rule 208 (1) shall apply where an individual is exposed subject to subrule (2) of this  
rule.  
History: 1979 AC; 2016 AACS.  
R 325.5211 Radiation levels from external sources in unrestricted areas.  
Rule 211. (1) Except as authorized by the department pursuant to subrule (2) of this rule, a  
licensee or registrant shall not receive, acquire, possess, use, or transfer sources of radiation in  
such a manner as to result in an individual in an unrestricted area receiving a dose in excess of  
the following:  
(a) Two millirems in any 1 hour.  
(b) One hundred millirems in any 7 consecutive days.  
(c) Five hundred millirems in any 1 year.  
(2) A person may apply to the department for proposed limits upon levels of radiation in  
unrestricted areas in excess of those specified in subrule (1) of this rule resulting from the  
applicants possession or use of sources of radiation. The application shall include information as  
to anticipated average radiation levels and anticipated occupancy times for each unrestricted area  
involved. The department shall approve the proposed limits if the applicant demonstrates to the  
satisfaction of the department that the proposed limits are not likely to cause any individual to  
receive a dose to the whole body in any period of 1 calendar year in excess of 0.5 rem.  
History: 1979 AC; 2016 AACS.  
R 325.5212 Concentrations in effluents to unrestricted areas.  
Rule 212. (1) A licensee shall not receive, acquire, possess, use, or transfer licensed material  
so as to release to an unrestricted area radioactive material in concentrations that exceed the limits  
specified in table II of appendix A in Rules 261 to 270, except as authorized pursuant to subrule (2)  
of this rule or Rule 238. For purposes of this rule, concentrations may be averaged over a period  
not greater than 1 year.  
(2) An application for a license or amendment may include proposed limits higher than those  
specified in subrule (1) of this rule. The department shall approve the proposed limits if the  
applicant demonstrates both of the following:  
(a) The applicant has made a reasonable effort to minimize the radioactivity contained in  
effluents to unrestricted areas.  
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(b) It is not likely that radioactive material discharged in the effluent would result in the  
exposure of an individual to concentrations of radioactive material in air or water exceeding the  
limits specified in table II of appendix A in Rules 261 to 270.  
(3) An application for higher limits pursuant to subrule (2) of this rule shall include  
information demonstrating that the applicant has made a reasonable effort to minimize the  
radioactivity discharged in effluents to unrestricted areas, and shall include, as pertinent, the  
following:  
(a) Information as to flow rates, total volume of effluent, peak concentration of each  
radionuclide in the effluent, and concentration of each radionuclide in the effluent averaged over a  
period of 1 year at the point where the effluent leaves a stack, tube, pipe, or similar conduit.  
(b) A description of the properties of the effluents, including the following:  
(i) Chemical composition.  
(ii) Physical characteristics, including suspended solids content in liquid effluents, and nature  
of gas or aerosol for air effluents.  
(iii) The hydrogen ion concentrations (pH) of liquid effluents.  
(iv) The size range of particulates in effluents released into air.  
(c) A description of the anticipated human occupancy in the unrestricted areas where the  
highest concentration of radioactive material from the effluent is expected, and, in the case of a  
river or stream, a description of water uses downstream from the point of release of the effluent.  
(d) Information as to the highest concentration of each radionuclide in an unrestricted area,  
including anticipated concentrations averaged over a period of 1 year in the following:  
(i) In air at any point of human occupancy.  
(ii) In water at points of use downstream from the point of release of the effluent.  
(e) The background concentration of radionuclides in the receiving river or stream before the  
release of liquid effluent.  
(f) A description of the environmental monitoring equipment, including sensitivity of the  
system, and procedures and calculations to determine concentration of radionuclides in the  
unrestricted area and possible reconcentrating of radionuclides.  
(g) A description of the waste treatment facilities and procedures used to reduce the  
concentration of radionuclides in effluents before their release.  
(4) For the purposes of this rule, the concentration limits in table II of appendix A in Rules  
261 to 270 apply at the boundary of the restricted area. The concentration of radioactive material  
discharged through a stack, pipe, or similar conduit may be determined with respect to the point  
where the material leaves the conduit. If the conduit discharges within the restricted area, the  
concentration at the boundary may be determined by applying appropriate factors for dilution,  
dispersion, or decay between the point of discharge and the boundary.  
(5) In addition to limiting concentrations in effluent streams, the department may limit  
quantities of radioactive materials released in air or water during a specified period of time if it  
appears that the daily intake of radioactive material from air, water, and food by a suitable sample  
of an exposed population group, averaged over a period not exceeding 1 year, would otherwise  
exceed the daily intake resulting from continuous exposure to air or water containing 1/3 the  
concentration of radioactive materials specified in table II of appendix A in Rules 261 to 270.  
(6) This rule does not apply to disposal of radioactive material into sanitary sewerage systems,  
which is governed by Rule 239.  
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History: 1979 AC; 2016 AACS.  
NOTICES, INSTRUCTIONS, AND REPORTS TO WORKERS; INSPECTIONS  
R 325.5213 General information.  
Rule 213. Rules 214 to 220 apply to the following:  
(a) Establish requirements for notices, instructions and reports by licensees or registrants to  
individuals engaged in work under a license or registration.  
(b) Explain options available to individuals in connection with department investigations of  
licensees or registrants to ascertain compliance with the act, these rules or orders, licenses or  
registration certificates issued regarding radiological working conditions.  
Department  
investigations include investigations of complaints and routine inspections or compliance  
investigations.  
(c) Apply to all persons who own, receive, acquire, possess, use, or transfer sources licensed  
by or registered with the department pursuant to part 2.  
History: 1979 AC; 2016 AACS.  
R 325.5214 Posting of notices to workers.  
Rule 214. (1) A licensee or registrant shall post current copies of the following documents:  
(a) The regulations in this part.  
(b) The license, certificate of registration and conditions or documents incorporated by  
reference and amendments thereto.  
(c) The operating procedures applicable to work under the license or registration.  
(d) Any notice of violation involving radiological working conditions, proposed imposition  
of civil penalty, or order issued pursuant to part 1, and any response from the licensee or  
registrant.  
(2) If posting of a document specified in subrule (1)(a), (b) or (c) of this rule is not  
practicable, the licensee or registrant may post a notice which describes the document and states  
where it may be examined.  
(3) Form RH-100 "Notice to Employees" shall be posted by each licensee or registrant  
wherever individuals work in or frequent any portion of a restricted area.  
(4) Documents, notices, or forms posted pursuant to this rule shall appear in a sufficient  
number of places to permit individuals engaged in work under the license or registration to  
observe them on the way to or from any particular work location to which the document applies,  
shall be conspicuous, and shall be replaced if defaced or altered.  
(5) Department documents posted pursuant to subrule(1)(d) of this rule shall be posted  
within 2 working days after receipt of the documents from the department. The licensee's or  
registrant's response, if any, shall be posted within 2 working days after dispatch from the  
licensee or registrant. The documents shall remain posted for a minimum of 5 working days or  
until action correcting the violation has been completed, whichever is later.  
History: 1979 AC; 2016 AACS.  
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R 325.5215 Instructions to workers.  
Rule 215. (1) A licensee or registrant shall do the following:  
(a) Inform individuals working in or frequenting any portion of a restricted area of the  
occurrence of radiation or sources of radiation in those portions of the restricted area.  
(b) Instruct workers in the following:  
(i) The health protection problems associated with exposure to the sources of radiation and  
in precautions or procedures to minimize exposure.  
(ii) The purposes and functions of protective devices employed.  
(iii) Appropriate responses to warnings made in the event of any unusual occurrence or  
malfunction that may involve exposure to radiation or radioactive material.  
(c) Instruct workers to observe, to the extent within the workers' control, the applicable  
rules and license or registration conditions for the protection of personnel from exposures to  
radiation or radioactive material.  
(d) Advise workers of reports of radiation dose that they may request pursuant to Rule 216.  
(e) Inform workers of their responsibility to report promptly to licensee or registrant any  
condition which may lead to or cause the following:  
(i) A violation of department rules, licenses, or registration certificates.  
(ii) Unnecessary exposure to radiation or radioactive material.  
(2) The extent of instructions required by this rule shall be commensurate with potential  
radiological health protection problems in the restricted area.  
History: 1979 AC; 2016 AACS.  
R 325.5216 Notifications and reports to individuals.  
Rule 216. (1) Radiation exposure data for an individual and the results of any  
measurements, analyses, and calculations of radioactive material deposited or retained in the  
body of an individual shall be reported to the individual as specified in this rule. The  
information reported shall include data and results obtained pursuant to rules or orders, or license  
or registration conditions, as shown in records maintained by the licensee or registrant pursuant  
to rules. Each notification and report shall meet the following requirements:  
(a) Be in writing.  
(b) Include appropriate identifying data such as the name of the licensee or registrant, the  
name of the individual, and the individual's social security number.  
(c) Include the individual's exposure information.  
(d) Contain the following statement:  
"This report is furnished to you under the provisions of Part 5 of the Michigan Department of  
Environmental Quality rules entitled ‘Standards for Protection Against Radiation’. You should  
preserve this report for future reference."  
(2) At the request of any worker, employed by or associated with him or her, a licensee or  
registrant shall advise the worker annually of the worker's exposure to radiation or radioactive  
material as shown in records maintained by the licensee or registrant pursuant to Rule 245.  
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(3) At the request of a worker formerly engaged in work controlled by the licensee or the  
registrant, a licensee or registrant shall furnish to the worker a report of the worker's exposure to  
radiation or radioactive material. The report shall meet the following requirements:  
(a) Be furnished within 30 days from the time the request is made, or within 30 days after  
the exposure of the individual has been determined by the licensee or registrant, whichever is  
later.  
(b) Cover, within the period of time specified in the request, each calendar quarter in which  
the worker's activities involved exposure to radiation from radioactive material licensed by, or  
registered with, the department.  
(c) Include the dates and locations of work under the license or registration certificate in  
which the worker participated during this period.  
(4) When a licensee or registrant is required pursuant to Rule 250 to report to the  
department any exposure of an individual to radiation or radioactive material, the licensee or the  
registrant shall also provide the individual a report on his or her exposure data included therein.  
Reports shall be transmitted at a time not later than the transmittal to the department.  
History: 1979 AC; 2016 AACS.  
R 325.5217 Presence of representatives of licensees or registrants and workers during  
investigations.  
Rule 217. (1) A licensee or registrant shall afford opportunity to a department  
representative, at all reasonable times, to inspect or investigate materials, machines, activities,  
facilities, premises, and records pursuant to these rules.  
(2) A licensee or registrant, or his or her authorized representative, may accompany a  
department representative during all phases of an investigation except during consultation with  
workers as specified in Rule 218.  
(3) If, at the time of investigation, an individual has been authorized by the workers to  
represent them during department investigations, the licensee or registrant shall notify the  
department representative of such authorization and shall give the workers' representative an  
opportunity to accompany the department representative during the investigation of physical  
working conditions.  
(4) Each worker’s representative shall be routinely engaged in work under control of the  
licensee or registrant and shall have received instructions as specified in Rule 215.  
(5) Different representatives of licensees or registrants and workers may accompany the  
department representative during different phases of an investigation if there is no resulting  
interference with the conduct of the investigation. However, only 1 workers' representative at a  
time may accompany the department representative.  
(6) With the approval of the licensee or registrant and the worker’s representative, an  
individual who is not routinely engaged in work under control of the licensee or registrant, for  
example a consultant to the licensee or registrant or to the workers’ representative, shall be  
afforded the opportunity to accompany the department representative during the investigation of  
physical working conditions.  
(7) Notwithstanding the other provisions of this rule, a department representative may  
refuse to permit accompaniment by any individual who deliberately interferes with a fair and  
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orderly investigation. With regard to any area containing proprietary information, the workers'  
representative for that area shall be an individual previously authorized by the licensee or  
registrant to enter that area.  
History: 1979 AC; 2016 AACS.  
R 325.5218 Consultation with workers during investigations.  
Rule 218. (1) A department representative may consult privately with workers concerning  
matters of occupational radiation protection and other matters related to applicable provisions of  
rules and licenses to the extent the department representative deems necessary for the conduct of  
an effective and thorough investigation.  
(2) During an investigation, a worker or authorized representative may bring privately to the  
attention of the department representative, either orally or in writing, any past or present  
condition that he or she has reason to believe may have contributed to or caused the following:  
(a) A violation of the act, these rules or license or registration conditions.  
(b) An unnecessary exposure of an individual to radiation from radioactive material under  
the licensee's or registrant's control.  
(3) A written notice presented pursuant to subrule (2) of this rule shall comply with  
requirements of Rule 219(1).  
(4) The provisions of subrule (2) of this rule shall not be interpreted as authorization to  
disregard instructions provided pursuant to Rule 215.  
History: 1979 AC; 2016 AACS.  
R 325.5219 Requests by workers for investigations.  
Rule 219. (1) A worker or representative of workers who believes that a violation of the act,  
these rules, or license or registration conditions exists or has occurred in work under a license or  
registration with regard to radiological working conditions in which the worker is engaged, may  
request an investigation by giving notice of the alleged violation to the department. Any notice  
shall be in writing, shall set forth the specific grounds for the notice, and shall be signed by the  
worker or representative of the workers. A copy shall be provided to the licensee or registrant by  
the department no later than at the time of investigation except that, upon the request of the  
worker giving notice, his or her name and the name of individuals referred to therein shall not  
appear in such copy or on any record published, released, or made available by the department,  
except for good cause shown.  
(2) If, upon receipt of notice, the department determines that the complaint meets the  
requirements in subrule (1) of this rule and that there are reasonable grounds to believe that the  
alleged violations exists or has occurred, the department shall investigate as soon as practicable,  
to determine if such alleged violation exists or has occurred. An investigation pursuant to this  
rule need not be limited to matters referred to in the complaint.  
(3) A licensee or registrant shall not discharge or in any manner discriminate against a  
worker because a worker has filed a complaint or instituted or caused to be instituted any  
proceeding under these rules or has testified, or is about to testify, in any proceeding or because  
of the exercise by a worker on behalf of himself or herself or others of any option afforded by  
this part.  
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History: 1979 AC; 2016 AACS.  
R 325.5220 Investigation not warranted; informal review.  
Rule 220. (1) If the department determines, with respect to a complaint under Rule 219, that  
an investigation is not warranted because there are no reasonable grounds to believe that a  
violation exists or has occurred, the complainant shall be notified in writing of such  
determination. The complainant may obtain review of such determination by submitting a  
written statement of position with the director of the department who shall provide the licensee  
or registrant with a copy of the statement by registered mail, excluding, at the request of the  
complainant, the name of the complainant. The licensee or registrant may submit an opposing  
written statement of position with the director of the department who will provide the  
complainant with a copy of the statement by registered mail. Upon the request of the  
complainant, the department may hold an informal conference in which the complainant and the  
licensee or registrant may orally present his or her views. An informal conference may also be  
held at the request of the licensee or registrant, but disclosure of the identity of the complainant  
shall be made only following receipt of written authorization from the complainant. After  
considering all written or oral views presented, the director of the department, or his or her  
designated representative, shall affirm, modify, or reverse the determination of the department  
and furnish the complainant and the licensee or registrant a written notification of his or her  
decision and the reason.  
(2) If the department determines that an investigation is not warranted because the  
requirements of Rule 219 (1) have not been met, the department shall notify the complainant in  
writing of the determination. The determination shall be without prejudice to the filing of a new  
complaint meeting the requirements of Rule 219 (1).  
(3) If the decision resulting from informal review is contested, the department shall proceed  
pursuant to Rule 2 (2).  
History: 1979 AC; 2016 AACS.  
PRECAUTIONARY PROCEDURES  
R 325.5221 Surveys.  
Rule 221. (1) As used in this rule, "survey" means a critical evaluation of a facility or area  
incident to the production, use, release, disposal, or presence of sources of radiation under a  
specific set of conditions to determine actual or potential radiation hazards. When appropriate,  
the evaluation includes tests, physical examination, source inventory and accountability, and  
measurements of levels of radiation or concentration of radioactive material present.  
(2) Each licensee or registrant shall make or cause to be made surveys as may be necessary  
to establish compliance with these rules.  
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History: 1979 AC; 2016 AACS.  
R 325.5222 Personnel monitoring.  
Rule 222. (1) Each licensee or registrant shall supply appropriate personnel monitoring  
equipment to, shall require the use of such equipment by, and shall demonstrate compliance  
pursuant to this rule for the following:  
(a) Each individual under such circumstances that he or she receives, or is likely to receive,  
a dose in any calendar quarter in excess of 25% of the quarterly occupational limit specified in  
Rule 205, (e.g. 300 mrems whole body).  
(b) Each individual under 18 years of age under such circumstances that he or she receives,  
or is likely to receive, a dose in any calendar quarter in excess of 5% of the quarterly  
occupational limit specified in Rule 205, (e.g. 60 mrems whole body).  
(c) Each individual, except a patient being intentionally irradiated, who enters a high  
radiation area.  
(d) Each individual who is likely to receive a dose in excess of 100 millirems in any 5  
consecutive days while in a room or area occupied by a patient while the patient is receiving  
therapy from any gamma-emitting radioactive material.  
(e) Each individual for whom personnel monitoring is specifically required under other  
parts of these rules pertaining to specific uses of sources of radiation.  
(2) Monitoring devices used to estimate whole body exposure shall normally be worn on the  
chest or abdomen. The dosimeter assigned for monitoring the trunk of the body shall not be used  
for any other purposes. If monitoring of other areas of the body (e.g. lens of the eye, extremity) is  
required by these rules or requested by the radiation worker because of the nature of exposure, a  
separate dosimeter shall be assigned for this purpose. The separate dosimeter shall be designated  
as an auxiliary dosimeter and the radiation record shall specify the specific area monitored.  
(3) If auxiliary dosimeters are assigned in accordance with subrule (2) of this rule, the  
specific body area shall be monitored for a minimum 13 consecutive weeks. If this monitoring  
results in recorded exposures in excess of 25% of the applicable specified quarterly limit in Rule  
205 (e.g. 300 mrems lens of the eye, 6.25 rems hands), the auxiliary dosimeter shall be  
permanently assigned to monitor that area.  
History: 1979 AC; 2016 AACS.  
R 325.5224 Caution signs, labels, and signals.  
Rule 224. (1) Except as otherwise authorized by the department, symbols prescribed by  
Rules 224 to 231 shall use the conventional radiation caution colors (magenta or purple on  
yellow background). The symbol prescribed is the conventional three-bladed design as follows:  
RADIATION SYMBOL  
1. Cross-hatched area is to be magenta or purple.  
2. Background is to be yellow.  
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(2) In addition to the contents of signs and labels prescribed in Rules 224 to 231, a licensee  
or registrant may provide on or near these signs and labels any additional information which may  
be appropriate in aiding individuals to minimize being exposed to radiation.  
History: 1979 AC; 2016 AACS.  
R 325.5225 Radiation area signs.  
Rule 225. Each radiation area shall be conspicuously posted with 1 or more signs bearing  
the radiation caution symbol and the following words:  
History: 1979 AACS; 2016 AACS.  
CAUTION: RADIATION AREA  
R 325.5226 High radiation area signs.  
Rule 226. Each high radiation area shall be conspicuously posted with 1 or more signs  
bearing the radiation caution symbol and the following words:  
History: 1979 AACS; 2016 AACS.  
CAUTION: HIGH RADIATION AREA  
R 325.5227 Controls for access to high radiation areas.  
Rule 227. (1) Each entrance or access point to a high radiation area shall be equipped with a  
control device that complies with 1 of the following:  
(a) It causes that level of radiation to be reduced below that at which an individual might  
receive a dose of 100 millirems in 1 hour upon entry into the area.  
(b) It energizes a conspicuous visible and audible alarm signal in such a manner that the  
individual entering the high radiation area and the licensee, registrant, or a supervisor of the  
activity are made aware of the entry.  
(c) It is locked, except during periods when access to the area is required, with positive  
control over each individual entry.  
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(2) Controls shall be established in such a way that an individual will not be prevented from  
leaving a high radiation area.  
(3) The controls required by subrule (1) (a) of this rule shall be constructed in such a  
manner that the primary radiation cannot be reactivated until all entrances have been secured,  
and the radiation on-off control is reset at the control panel.  
(4) The controls required by subrule (1) (b) of this rule shall be constructed in such a  
manner that when the warning device is activated, it is necessary to shut off or secure the source  
of radiation and secure all tripped entrances before being able to inactivate the alarm system.  
(5) In the case of a high radiation area established for a period of 30 days or less, direct  
surveillance to prevent unauthorized entry may be substituted for the controls required by this  
rule.  
(6) A licensee, registrant, or applicant for a license or registration, may apply to the  
department for approval of methods not included in subrules (1) and (5) of this rule for  
controlling access to high radiation areas. The department may approve the proposed  
alternatives if the licensee, registrant, or applicant demonstrates that the alternative methods of  
control will prevent unauthorized entry into a high radiation area, and that the requirement of  
subrule (2) of this rule is met.  
History: 1979 AC; 2016 AACS.  
R 325.5228 Airborne radioactivity area signs.  
Rule 228. (1) As used in this rule, “airborne radioactivity area” means a room, enclosure, or  
operating area in which airborne radioactive material exists in concentrations in excess of the  
amounts specified in column 1, table I of Rules 261 to 269 or a room, enclosure, or operating area  
in which airborne radioactive material exists in concentrations which, averaged over the number of  
hours in any week during which individuals are in the area, exceed 25% of the amounts specified  
in column 1, table I of Rules 261 to 269.  
(2) Each airborne radioactivity area shall be conspicuously posted with 1 or more signs  
bearing the radiation caution symbol and the following words:  
CAUTION  
AIRBORNE RADIOACTIVITY AREA  
History: 1979 AC; 2016 AACS.  
R 325.5229 Area and room signs.  
Rule 229. (1) Each area or room in which any radioactive material, other than natural uranium  
or thorium, is used or stored in an amount exceeding 10 times the quantity of radioactive material  
specified in Rule 271 shall be conspicuously posted with 1 or more signs bearing the radiation  
caution symbol and the following words:  
CAUTION  
RADIOACTIVE MATERIAL  
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(2) Each area or room in which natural uranium or thorium is used or stored in an amount  
exceeding 100 times the quantity specified in Rule 271 shall be conspicuously posted with a sign  
or signs bearing the radiation caution symbol and the following words:  
History: 1979 AC; 2016 AACS.  
R 325.5230 Container labels.  
Rule 230. (1) Except as provided in subrule (3) of this rule each container of radioactive  
material shall bear a durable, clearly visible label identifying the radioactive contents.  
(2) The label required shall bear the radiation caution symbol and the following words:  
CAUTION  
RADIOACTIVE MATERIAL  
It shall also provide sufficient information (including as appropriate, radiation levels, kinds of  
material, estimate of activity, date for which activity is estimated, and the like) to permit  
individuals handling or using the containers, or working in their vicinity to take precautions to  
avoid or minimize being exposed.  
(3) Notwithstanding subrule (1) of this rule, labeling is not required for the following:  
(a) Containers that do not contain radioactive materials in quantities greater than the  
applicable quantities listed in Rule 271.  
(b) Containers that contain only natural uranium or thorium in quantities no greater than 10  
times the applicable quantities listed in Rule 271.  
(c) Containers that do not contain radioactive materials in concentrations greater than the  
applicable concentrations listed in column 2, table I, of appendix A in Rules 261 to 269.  
(d) Containers that are attended by an individual who takes the precautions necessary to  
prevent any individual from being exposed to radiation or radioactive materials in excess of the  
limits established by this part.  
(e) Containers that are in transport and packaged and labeled in accordance with regulations  
published by the United States Department of Transportation.  
(f) Containers that are accessible only to individuals authorized to handle or use them (for  
example, containers in locations such as water-filled canals, storage vaults, or hot cells) or to  
work in the vicinity thereof, if the contents are identified to such individuals by a readily  
available written record.  
(g) Manufacturing and process equipment such as nuclear reactors, reactor components  
piping, and tanks.  
History: 1979 AC; 2016 AACS.  
R 325.5231 Alternate wording for warning signs.  
Rule 231. The word DANGER may be used instead of CAUTION in a warning sign  
required by Rules 225, 226, 228, 229, and 230.  
History: 1979 AC; 2016 AACS.  
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R 325.5232 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5233 Exemptions from posting and labeling requirements.  
Rule 233. Notwithstanding Rules 225 to 230, the following apply:  
(a) A room or other area containing radioactive material for periods of less than 8 hours is  
not required to be posted with a caution sign if either of the following apply:  
(i) The material is constantly attended during these periods by an individual who shall take  
the precautions necessary to prevent any individual from being exposed to radiation or  
radioactive material in excess of the limits established in this part.  
(ii) The room or area is subject to the licensee's or registrant's control.  
(b) A room or other area is not required to be posted with a caution sign, and control is not  
required for each entrance or access point to a room or other area that is a high radiation area,  
solely because of the presence of radioactive material prepared for transport and packaged and  
labeled in accordance with regulations of the United States Department of Transportation.  
History: 1979 AC; 2016 AACS.  
R 325.5236 Storage of sources and procedures for receiving and opening of packages.  
Rule 236. (1) Sources of radiation shall be secured against unauthorized removal from the  
place of storage.  
(2) A licensee shall establish and maintain procedures for safely opening packages in which  
licensed material is received, and the licensee shall assure that such procedures are followed and  
due consideration is given to special instructions for the type of package being opened.  
History: 1979 AC; 2016 AACS.  
R 325.5237 Surface contamination.  
Rule 237. (1) Pursuant to Rule 221, a licensee or registrant shall conduct surveys and  
measurements of radioactive surface contamination of facilities, equipment, and other property  
that may be contaminated. With regard to radioactive surface contamination, the philosophy and  
goal stated in Rule 201(2) may be considered presently satisfied by following the guidance in  
Rule 272.  
(2) A facility, installation, equipment, or other property shall not be assigned, sold, leased,  
or transferred to an unlicensed person unless the property has been decontaminated below the  
applicable limits specified in Rule 272.  
(3) The guidance in Rule 272 may be modified at the discretion of the department in any  
specific situation involving a specific radionuclide.  
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History: 1979 AC; 2016 AACS.  
R 325.5238 Disposal of radioactive material.  
Rule 238. (1) A licensee shall not dispose of any radioactive material except for either of the  
following:  
(a) By transfer to an authorized recipient as provided in Rule 123.  
(b) As authorized pursuant to subrule (2) of this rule or Rule 212, 239, or 240.  
(2) A person may apply to the department for approval of proposed procedures to dispose of  
radioactive material in a manner not otherwise authorized in this part. The application shall  
include a description of the radioactive material, including the quantities and kinds of radioactive  
material and the levels of radioactivity involved, and the proposed manner and conditions of  
disposal. The application, where appropriate, should also include an analysis and evaluation of  
pertinent information as to the nature of the environment, including topographical, geological,  
meteorological, and hydrological characteristics; usage of ground and surface waters in the  
general area; the nature and location of other potentially affected facilities; and procedures to be  
observed to minimize the risk of unexpected or hazardous exposures.  
(3) The department shall not approve an application for a license to receive radioactive  
material from other persons for disposal on land not owned by a state or the federal government.  
History: 1979 AC; 2016 AACS.  
R 325.5239 Disposal by release into sanitary sewerage systems.  
Rule 239. (1) A licensee shall not discharge radioactive material into a sanitary sewerage  
system unless all of the following conditions exist:  
(a) It is readily soluble or dispersible in water.  
(b) The quantity of any radioactive material released into the system by the licensee in any 1  
day does not exceed the larger of the following:  
(i) The quantity which, if diluted by the average daily quantity of sewage released into the  
sewer by the licensee, will result in an average concentration not greater than the limits specified  
in column 2, table I, of Rules 261 to 269.  
(ii) Ten times the quantity of such material specified in Rule 271.  
(c) The quantity of any radioactive material released in any 1 month, if diluted by the  
average monthly quantity of water released by the licensee, will not result in an average  
concentration exceeding the limits specified in column 2, table I, of Rules 261 to 269.  
(d) The gross quantity of radioactive material released into the sewerage system by the  
licensee does not exceed 1 curie per year.  
(2) Excreta from individuals undergoing medical diagnosis or therapy with radioactive  
material shall be exempt from any limitations contained in this rule.  
History: 1979 AC; 2016 AACS.  
R 325.5240 Disposal by burial in soil or incineration.  
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Rule 240. (1) Burial sites shall be licensed by the department upon application submitted in  
accordance with Rules 101 and 102. Burial shall be in a controlled area.  
(2) A licensee shall not incinerate radioactive material for the purpose of disposal or  
preparation for disposal except as specifically approved by the department pursuant to Rules 212  
and 238.  
History: 1979 AC; 2016 AACS.  
R 325.5241 Use of safety equipment.  
Rule 241. (1) Requirements for safety interlocks, protective enclosures, protective clothing,  
precautionary labels, or any other safety equipment presumes the proper use of such equipment.  
Unauthorized override of safety interlocks or other intentional misuse or non-use of required  
safety equipment shall be considered willful violation of these rules.  
(2) The radiation supervisor shall request, in writing, from the department, authorization to  
override safety interlocks. The request shall include justification, precautionary procedures  
during override, and statement of immediate supervision by the radiation protection supervisor or  
his or her authorized representative. Prior approval by the department is required. Approval may  
be granted by written condition on the specific license or registration certificate or by telephone  
followed by written confirmation from the department.  
History: 1979 AC; 2016 AACS.  
RECORDS, REPORTS AND NOTIFICATION  
R 325.5245 Records of surveys, radiation monitoring, disposal, and tests.  
Rules 245. (1) A licensee or registrant shall maintain records showing the radiation doses of  
all individuals for whom personnel monitoring is required under Rule 222. Records shall be kept  
on department Form RH-102, in accordance with the instructions contained in that form, or on  
clear and legible records containing all the information required by Form RH-102. The doses  
entered on the forms or records shall be for periods of time not exceeding 1 calendar quarter.  
(2) A licensee or registrant shall maintain records in the same units used in this part,  
showing the results of surveys required in Rule 221, disposals made under Rules 238 to 240, and  
surveys required by other parts of these rules.  
(3) Records of individual exposure to radiation and to radioactive material that is  
maintained pursuant to subrule (1) of this rule and records of bio-assays, including results of  
whole body counting examinations, made pursuant to Rule 209 shall be preserved indefinitely or  
until the department authorizes their disposal.  
(4) The discontinuance or curtailment of activities does not relieve the licensee or registrant  
of responsibility for retaining all records required by this rule. A licensee or registrant may,  
however, request the department to accept such records. The acceptance of the records by the  
department relieves the licensee or registrant of subsequent responsibility only in respect to its  
preservation as required by this rule.  
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(5) Records that are maintained pursuant to this part may be maintained in the form of  
microfilms.  
History: 1979 AC; 2016 AACS.  
R 325.5246 Reports of theft or loss of sources of radiation.  
Rule 246. A licensee or registrant shall report by telephone and facsimile to the department  
the theft or loss of any source of radiation immediately after such occurrence becomes known to  
the licensee or registrant.  
History: 1979 AC; 2016 AACS.  
R 325.5247 Notification of incidents.  
Rule 247. (1) A licensee or registrant shall immediately notify the department by telephone  
and facsimile if any incident involving any source of radiation possessed by him or her and that  
may have caused or threatens to cause any of the following:  
(a) A dose to the whole body of any individual of 25 rems or more of radiation; a dose to  
the skin of the whole body of any individual of 150 rems or more of radiation; or a dose to the  
feet, ankles, hands, or forearms of any individual of 375 rems or more of radiation.  
(b) The release of radioactive material in concentrations which, if averaged over a period of  
24 hours, would exceed 5,000 times the limits specified for such materials in table II of Rules  
261 to 269.  
(c) A loss of 1 working week or more of the operation of any facilities affected due to  
contamination or other potential hazard from radioactive material.  
(d) Damage to property in excess of $100,000.00.  
(2) A licensee or registrant shall within 24 hours notify the department by telephone and  
facsimile of any incident involving any source of radiation possessed by him or her and that may  
have caused or threatens to cause any of the following:  
(a) A dose to the whole body of any individual of 5 rems or more of radiation; a dose to the  
skin of the whole body of any individual of 30 rems or more of radiation; or a dose to the feet,  
ankles, hands or forearms of 75 rems or more of radiation.  
(b) The release of radioactive material in concentrations that, if averaged over a period of 24  
hours, would exceed 500 times the limits specified for such materials in table II of Rules 261 to  
269.  
(c) A loss of 1 day or more of the operation of any facilities affected or damage to property  
in excess of $1,000.00 due to contamination or other potential hazard from radioactive material.  
(3) A report filed with the department pursuant to this rule shall be prepared in such a  
manner that names of individuals who have received exposure to radiation are stated in a  
separate part of the report.  
History: 1979 AC; 2016 AACS.  
R 325.5250 Reports of overdose and excessive levels and concentrations.  
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Rule 250. (1) In addition to any notification required by Rule 247 a licensee or registrant  
shall report all of the following in writing within 30 days to the department:  
(a) Each radiation dose received by an individual or concentrations of radioactive material  
in excess of any applicable limit as set forth in this part or as otherwise approved by the  
department.  
(b) Each incident for which notification is required by Rule 247.  
(c) Levels of radiation or concentrations of radioactive material (not involving excessive  
exposure of any individual) in an unrestricted area in excess of 10 times any applicable limit as  
set forth in this part or as otherwise approved by the department.  
(2) A report required in subrule (1) of this rule shall describe the extent of radiation dose  
received by individuals or exposure to radioactive material, including estimates of each  
individual’s dose as required by subrule (3) of this rule; levels of radiation and concentrations of  
radioactive material involved; the cause of exposure, levels, or concentrations; and corrective  
steps taken or planned to assure against a recurrence.  
(3) A report filed with the department pursuant to subrule (1) of this rule shall include for  
each individual exposed the name, social security number, and date of birth, and an estimate of  
the individual’s dose. The report shall be prepared so that this information is stated in a separate  
part of the report.  
History: 1979 AC; 2016 AACS.  
R 325.5253 Vacating premises.  
Rule 253. A specific licensee, not less than 20 days before vacating or relinquishing  
possession or control of premises that may have been contaminated with radioactive material as a  
result of his or her activities, shall notify the department in writing of intent to vacate. When  
deemed necessary by the department, the licensee shall decontaminate or have decontaminated  
the premises in a manner required by the department.  
History: 1979 AC; 2016 AACS.  
TRANSPORTATION  
R 325.5255 Intrastate transportation of radioactive materials.  
Rule 255. (1) A licensee shall not transport any radioactive material outside of the confines  
of his or her plant or other authorized location of use, or deliver any radioactive material to a  
carrier for transportation, unless the licensee complies with 10 CFR Parts 20, 71; 14 CFR Part  
103; 46 CFR Part 146; and 49 CFR Parts 173-179 to the same extent as if the transportation were  
subject to the rules and regulations of that agency.  
(2) This rule applies to both of the following:  
(a) The transportation of radioactive material.  
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(b) The delivery of radioactive material to a carrier for transportation that is not subject to  
the rules and regulations of the United States Department of Transportation and other agencies of  
the United States.  
History: 1979 AC; 2016 AACS.  
R 325.5256 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5261 Appendix A1. Concentrations in air and water above natural  
background.  
Elements A and B.  
Rule 261. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1  
Column 2  
Water  
Column 1  
Column 2  
Water  
Air  
(µCi/ml)  
2 x 10-12  
3 x 10-11  
8 x 10-8  
2 x 10-8  
6 x 10-12  
1 x 10-10  
6 x 10-12  
3 x 10-10  
4 x 10-8  
5 x 10-8  
6 x 10-12  
1 x 10-10  
4 x 10-6  
2 x 10-5  
2 x 10-7  
1 x 10-7  
2 x 10-7  
2 x 10-8  
5 x 10-7  
3 x 10-8  
Air  
(µCi/ml)  
8 x 10-14  
9 x 10-13  
3 x 10-9  
6 x 10-10  
2 x 10-13  
4 x 10-12  
2 x 10-13  
9 x 10-12  
1 x 10-9  
2 x 10-9  
2 x 10-13  
4 x 10-12  
1 x 10-7  
8 x 10-7  
6 x 10-9  
5 x 10-9  
5 x 10-9  
7 x 10-10  
2 x 10-8  
9 x 10-10  
1 x 10-4  
4 x 10-8  
7 x 10-8  
1 x 10-8  
1 x 10-8  
4 x 10-9  
4 x 10-9  
3 x 10-9  
(µCi/ml)  
6 x 10-5  
9 x 10-3  
3 x 10-3  
3 x 10-3  
1 x 10-4  
8 x 10-4  
1 x 10-4  
3 x 10-3  
4 x 10-3  
4 x 10-3  
1 x 10-4  
8 x 10-4  
1 x 10-1  
1 x 10-1  
8 x 10-4  
8 x 10-4  
7 x 10-4  
7 x 10-4  
3 x 10-3  
3 x 10-3  
----------  
----------  
1 x 10-2  
1 x 10-2  
2 x 10-3  
2 x 10-3  
6 x 10-4  
6 x 10-4  
(µCi/ml)  
2 x 10-6  
3 x 10-4  
9 x 10-5  
9 x 10-5  
4 x 10-6  
3 x 10-5  
4 x 10-6  
9 x 10-5  
1 x 10-4  
1 x 10-4  
4 x 10-6  
3 x 10-5  
5 x 10-3  
5 x 10-3  
3 x 10-5  
3 x 10-5  
2 x 10-5  
2 x 10-5  
1 x 10-4  
1 x 10-4  
----------  
----------  
5 x 10-4  
5 x 10-4  
5 x 10-5  
5 x 10-5  
2 x 10-5  
2 x 10-5  
Actinium (89)  
Ac-227  
Ac-228  
Am-241  
Am-242m  
Am-242  
Am-243  
Am-244  
Sb-122  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
Americium (95)  
Antimony (51)  
Sb-124  
S
I
S
I
Sb-125  
Argon (18)  
A-37  
A-41  
As-73  
Sub** 6 x 10-3  
Sub  
S
I
S
I
S
I
2 x 10-6  
2 x 10-6  
4 x 10-7  
3 x 10-7  
1 x 10-7  
1 x 10-7  
1 x 10-7  
Arsenic (33)  
As-74  
As-76  
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As-77  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
5 x 10-7  
4 x 10-7  
7 x 10-9  
3 x 10-8  
1 x 10-6  
4 x 10-7  
1 x 10-7  
4 x 10-8  
9 x 10-10  
1 x 10-7  
1 x 10-7  
1 x 10-6  
6 x 10-6  
1 x 10-6  
2 x 10-7  
1 x 10-7  
2 x 10-7  
1 x 10-8  
6 x 10-9  
6 x 10-9  
1 x 10-7  
2 x 10-7  
1 x 10-6  
2 x 10-7  
2 x 10-3  
2 x 10-3  
5 x 10-5  
2 x 10-3  
5 x 10-3  
5 x 10-3  
8 x 10-4  
7 x 10-4  
2 x 10-2  
2 x 10-2  
6 x 10-3  
6 x 10-3  
5 x 10-2  
5 x 10-2  
1 x 10-3  
1 x 10-3  
2 x 10-3  
2 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-2  
1 x 10-2  
8 x 10-3  
1 x 10-3  
2 x 10-8  
1 x 10-8  
2 x 10-10  
1 x 10-9  
4 x 10-8  
1 x 10-8  
4 x 10-9  
1 x 10-9  
3 x 10-11  
4 x 10-9  
5 x 10-9  
4 x 10-8  
2 x 10-7  
4 x 10-8  
6 x 10-9  
5 x 10-9  
6 x 10-9  
5 x 10-10  
2 x 10-10  
2 x 10-10  
3 x 10-9  
7 x 10-9  
4 x 10-8  
6 x 10-9  
8 x 10-5  
8 x 10-5  
2 x 10-6  
7 x 10-5  
2 x 10-4  
2 x 10-4  
3 x 10-5  
2 x 10-5  
6 x 10-4  
6 x 10-4  
2 x 10-4  
2 x 10-4  
2 x 10-3  
2 x 10-3  
4 x 10-5  
4 x 10-5  
6 x 10-5  
6 x 10-5  
4 x 10-5  
4 x 10-5  
4 x 10-4  
4 x 10-4  
3 x 10-4  
4 x 10-5  
Astatine (85)  
Barium (56)  
At-211  
Ba-131  
Ba-140  
Bk-249  
Bk-250  
Be-7  
Berkelium (97)  
Beryllium (4)  
Bismuth (83)  
Bi-206  
Bi-207  
Bi-210  
Bi-212  
Br-82  
Bromine (35)  
History: 1979 AC; 2016 AACS.  
R 325.5262 Appendix A2. Concentrations in air and water above natural background.  
Elements C.  
Rule 262. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1 Column 2  
Column 1  
Column 2  
Water  
Air  
Water  
(µCi/ml)  
5 x 10-3  
5 x 10-3  
7 x 10-4  
7 x 10-4  
1 x 10-3  
1 x 10-3  
3 x 10-4  
5 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-4  
7 x 10-4  
4 x 10-4  
Air  
(µCi/ml)  
2 x 10-9  
3 x 10-9  
1 x 10-9  
1 x 10-9  
8 x 10-9  
6 x 10-9  
1 x 10-9  
4 x 10-9  
6 x 10-9  
6 x 10-9  
5 x 10-14  
3 x 10-12  
2 x 10-13  
(µCi/ml)  
5 x 10-8  
7 x 10-8  
4 x 10-8  
4 x 10-8  
2 x 10-7  
2 x 10-7  
3 x 10-8  
1 x 10-7  
2 x 10-7  
2 x 10-7  
2 x 10-12  
1 x 10-10  
5 x 10-12  
(µCi/ml)  
2 x 10-4  
2 x 10-4  
3 x 10-5  
3 x 10-5  
3 x 10-5  
4 x 10-5  
9 x 10-6  
2 x 10-4  
5 x 10-5  
3 x 10-5  
4 x 10-6  
2 x 10-5  
1 x 10-5  
Cadmium (48)  
Cd-109  
Cd-115m  
Cd-115  
Ca-45  
S
I
S
I
S
I
S
I
S
I
S
I
Calcium (20)  
Ca-47  
Californium (98)  
Cf-249  
Cf-250  
S
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I
S
I
S
I
S
I
S
I
1 x 10-10  
2 x 10-12  
1 x 10-10  
6 x 10-12  
3 x 10-11  
8 x 10-10  
8 x 10-10  
5 x 10-12  
5 x 10-12  
4 x 10-6  
7 x 10-4  
1 x 10-4  
8 x 10-4  
2 x 10-4  
2 x 10-4  
4 x 10-3  
4 x 10-3  
4 x 10-6  
4 x 10-6  
2 x 10-2  
----------  
3 x 10-3  
3 x 10-3  
1 x 10-3  
1 x 10-3  
3 x 10-4  
3 x 10-4  
7 x 10-2  
3 x 10-2  
2 x 10-1  
3 x 10-2  
3 x 10-4  
1 x 10-3  
3 x 10-3  
7 x 10-3  
2 x 10-3  
2 x 10-3  
4 x 10-4  
1 x 10-3  
2 x 10-3  
2 x 10-3  
1 x 10-2  
1 x 10-2  
5 x 10-2  
5 x 10-2  
2 x 10-2  
1 x 10-2  
8 x 10-2  
6 x 10-2  
4 x 10-3  
3 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-2  
6 x 10-3  
7 x 10-4  
7 x 10-4  
1 x 10-4  
3 x 10-12  
6 x 10-14  
3 x 10-12  
2 x 10-13  
1 x 10-12  
3 x 10-11  
3 x 10-11  
2 x 10-13  
2 x 10-13  
1 x 10-7  
1 x 10-6  
2 x 10-8  
5 x 10-9  
9 x 10-9  
7 x 10-9  
3 x 10-10  
2 x 10-10  
4 x 10-7  
1 x 10-7  
1 x 10-6  
2 x 10-7  
1 x 10-9  
4 x 10-10  
2 x 10-8  
3 x 10-9  
1 x 10-8  
6 x 10-9  
2 x 10-9  
5 x 10-10  
1 x 10-8  
8 x 10-10  
9 x 10-8  
7 x 10-8  
4 x 10-7  
8 x 10-8  
1 x 10-7  
6 x 10-9  
6 x 10-7  
3 x 10-7  
3 x 10-8  
2 x 10-9  
1 x 10-8  
3 x 10-10  
7 x 10-8  
4 x 10-8  
4 x 10-12  
6 x 10-12  
2 x 10-13  
3 x 10-5  
4 x 10-6  
3 x 10-5  
7 x 10-6  
7 x 10-6  
1 x 10-4  
1 x 10-4  
1 x 10-7  
1 x 10-7  
8 x 10-4  
----------  
9 x 10-5  
9 x 10-5  
4 x 10-5  
4 x 10-5  
1 x 10-5  
1 x 10-5  
2 x 10-3  
9 x 10-4  
6 x 10-3  
1 x 10-3  
9 x 10-6  
4 x 10-5  
1 x 10-4  
2 x 10-4  
9 x 10-5  
6 x 10-5  
2 x 10-5  
4 x 10-5  
8 x 10-5  
6 x 10-5  
4 x 10-4  
4 x 10-4  
2 x 10-3  
2 x 10-3  
5 x 10-4  
4 x 10-4  
3 x 10-3  
2 x 10-3  
1 x 10-4  
9 x 10-5  
5 x 10-5  
3 x 10-5  
3 x 10-4  
2 x 10-4  
2 x 10-5  
2 x 10-5  
5 x 10-6  
Cf-251  
Cf-252  
Cf-253  
Cf-254  
Carbon (6)  
C-14  
(CO2)  
Ce-141  
S
Sub** 5 x 10-5  
Cerium (58)  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
4 x 10-7  
2 x 10-7  
3 x 10-7  
2 x 10-7  
1 x 10-8  
6 x 10-9  
1 x 10-5  
3 x 10-6  
4 x 10-5  
6 x 10-6  
4 x 10-8  
1 x 10-8  
5 x 10-7  
9 x 10-8  
4 x 10-7  
2 x 10-7  
6 x 10-8  
1 x 10-8  
4 x 10-7  
2 x 10-8  
3 x 10-6  
2 x 10-6  
1 x 10-5  
2 x 10-6  
3 x 10-6  
2 x 10-7  
2 x 10-5  
9 x 10-6  
8 x 10-7  
5 x 10-8  
3 x 10-7  
9 x 10-9  
2 x 10-6  
1 x 10-6  
1 x 10-10  
2 x 10-10  
6 x 10-12  
Ce-143  
Ce-144  
Cs-131  
Cs-134m  
Cs-134  
Cs-135  
Cs-136  
Cs-137  
Cl-36  
Cesium (55)  
Chlorine (17)  
Cl-38  
Chromium (24)  
Cobalt (27)  
Cr-51  
Co-57  
Co-58m  
Co-58  
Co-60  
Copper (29)  
Curium (96)  
Cu-64  
S
I
S
I
Cm-242  
Cm-243  
S
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I
S
I
S
I
S
I
S
I
1 x 10-10  
9 x 10-12  
1 x 10-10  
5 x 10-12  
1 x 10-10  
5 x 10-12  
1 x 10-10  
5 x 10-12  
1 x 10-10  
7 x 10-4  
2 x 10-4  
8 x 10-4  
1 x 10-4  
8 x 10-4  
1 x 10-4  
8 x 10-4  
1 x 10-4  
6 x 10-4  
3 x 10-12  
3 x 10-13  
3 x 10-12  
2 x 10-13  
4 x 10-12  
2 x 10-13  
4 x 10-12  
2 x 10-13  
4 x 10-12  
2 x 10-5  
7 x 10-6  
3 x 10-5  
4 x 10-6  
3 x 10-5  
4 x 10-6  
3 x 10-5  
4 x 10-6  
2 x 10-5  
Cm-244  
Cm-245  
Cm-246  
Cm-247  
Cm-248  
Cm-249  
S
I
S
I
6 x 10-13  
1 x 10-11  
1 x 10-5  
1 x 10-5  
1 x 10-5  
4 x 10-5  
6 x 10-2  
6 x 10-2  
2 x 10-14  
4 x 10-13  
4 x 10-7  
4 x 10-7  
4 x 10-7  
1 x 10-6  
2 x 10-3  
2 x 10-3  
History: 1979 AC; 2016 AACS.  
R 325.5263 Appendix A3. Concentrations in air and water above natural background.  
Elements D to H.  
Rules 263. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1  
Column 2  
Water  
Column 1  
Column 2  
Water  
Air  
(µCi/ml)  
3 x 10-6  
2 x 10-6  
2 x 10-7  
2 x 10-7  
8 x 10-10  
6 x 10-10  
5 x 10-9  
6 x 10-9  
2 x 10-11  
1 x 10-10  
5 x 10-10  
4 x 10-10  
6 x 10-7  
4 x 10-7  
7 x 10-7  
6 x 10-7  
Air  
(µCi/ml)  
1 x 10-2  
1 x 10-2  
1 x 10-3  
1 x 10-3  
7 x 10-4  
7 x 10-4  
5 x 10-4  
5 x 10-4  
4 x 10-4  
4 x 10-4  
8 x 10-4  
8 x 10-4  
3 x 10-3  
3 x 10-3  
3 x 10-3  
3 x 10-3  
(µCi/ml)  
(µCi/ml)  
4 x 10-4  
4 x 10-4  
4 x 10-5  
4 x 10-5  
2 x 10-5  
2 x 10-5  
2 x 10-5  
2 x 10-5  
1 x 10-5  
1 x 10-5  
3 x 10-5  
3 x 10-5  
9 x 10-5  
9 x 10-5  
1 x 10-4  
1 x 10-4  
Dysprosium (66)  
Einsteinium (99)  
Dy-165  
Dy-166  
Es-253  
Es-254m  
Es-254  
Es-255  
Er-169  
Er-171  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
9 x 10-8  
7 x 10-8  
8 x 10-9  
7 x 10-9  
3 x 10-11  
2 x 10-11  
2 x 10-10  
2 x 10-10  
6 x 10-13  
4 x 10-12  
2 x 10-11  
1 x 10-11  
2 x 10-8  
1 x 10-8  
2 x 10-8  
2 x 10-8  
Erbium (68)  
Europium (63)  
Eu-152  
(T1/2=9.2  
hrs)  
Eu-152  
(T1/2=13  
yrs)  
S
I
4 x 10-7  
2 x 10-3  
1 x 10-8  
6 x 10-5  
3 x 10-7  
2 x 10-3  
1 x 10-8  
6 x 10-5  
S
I
1 x 10-8  
2 x 10-8  
2 x 10-3  
2 x 10-3  
4 x 10-10  
6 x 10-10  
8 x 10-5  
8 x 10-5  
Page 63  
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Eu-154  
Eu-155  
Fm-254  
Fm-255  
Fm-256  
F-18  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
4 x 10-9  
7 x 10-9  
9 x 10-8  
7 x 10-8  
6 x 10-8  
7 x 10-8  
2 x 10-8  
1 x 10-8  
3 x 10-9  
2 x 10-9  
5 x 10-6  
3 x 10-6  
2 x 10-7  
9 x 10-8  
5 x 10-7  
4 x 10-7  
2 x 10-7  
2 x 10-7  
1 x 10-5  
6 x 10-6  
1 x 10-6  
6 x 10-7  
3 x 10-7  
2 x 10-7  
1 x 10-6  
8 x 10-7  
4 x 10-8  
7 x 10-8  
2 x 10-7  
2 x 10-7  
5 x 10-6  
5 x 10-6  
6 x 10-4  
6 x 10-4  
6 x 10-3  
6 x 10-3  
4 x 10-3  
4 x 10-3  
1 x 10-3  
1 x 10-3  
3 x 10-5  
3 x 10-5  
2 x 10-2  
1 x 10-2  
6 x 10-3  
6 x 10-3  
2 x 10-3  
2 x 10-3  
1 x 10-3  
1 x 10-3  
5 x 10-2  
5 x 10-2  
5 x 10-3  
4 x 10-3  
2 x 10-3  
1 x 10-3  
5 x 10-3  
4 x 10-3  
2 x 10-3  
2 x 10-3  
9 x 10-4  
9 x 10-4  
1 x 10-1  
1 x 10-1  
----------  
1 x 10-10  
2 x 10-10  
3 x 10-9  
3 x 10-9  
2 x 10-9  
2 x 10-9  
6 x 10-10  
4 x 10-10  
1 x 10-10  
6 x 10-11  
2 x 10-7  
9 x 10-8  
8 x 10-9  
3 x 10-9  
2 x 10-8  
1 x 10-8  
8 x 10-9  
6 x 10-9  
4 x 10-7  
2 x 10-7  
4 x 10-8  
2 x 10-8  
1 x 10-8  
8 x 10-9  
4 x 10-8  
3 x 10-8  
1 x 10-9  
3 x 10-9  
7 x 10-9  
6 x 10-9  
2 x 10-7  
2 x 10-7  
4 x 10-5  
2 x 10-5  
2 x 10-5  
2 x 10-4  
2 x 10-4  
1 x 10-4  
1 x 10-4  
3 x 10-5  
3 x 10-5  
9 x 10-7  
9 x 10-7  
8 x 10-4  
5 x 10-4  
2 x 10-4  
2 x 10-4  
8 x 10-5  
8 x 10-5  
4 x 10-5  
4 x 10-5  
2 x 10-3  
2 x 10-3  
2 x 10-4  
1 x 10-4  
5 x 10-5  
5 x 10-5  
2 x 10-4  
2 x 10-4  
7 x 10-5  
7 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-3  
3 x 10-3  
----------  
Fermium (100)  
Fluorine (9)  
Gadolinium (64)  
Gd-153  
Gd-159  
Ga-72  
Gallium (31)  
Germanium (32)  
Gold (79)  
Ge-71  
Au-196  
Au-198  
Au-199  
Hf-181  
Ho-166  
H-3  
Hafnium (72)  
Holmium (67)  
Hydrogen (1)  
Sub** 2 x 10-3  
History: 1979 AC; 2016 AACS.  
R 325.5264 Appendix A4. Concentrations in air and water above natural background.  
Elements I to L.  
Rule 264. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1  
Column 2  
Water  
Column 1  
Column 2  
Water  
Air  
(µCi/ml)  
8 x 10-6  
7 x 10-6  
1 x 10-7  
2 x 10-8  
Air  
(µCi/ml)  
4 x 10-2  
4 x 10-2  
5 x 10-4  
5 x 10-4  
(µCi/ml)  
(µCi/ml)  
1 x 10-3  
1 x 10-3  
2 x 10-5  
2 x 10-5  
Indium (49)  
In-113m  
In-114m  
S
I
S
I
3 x 10-7  
2 x 10-7  
4 x 10-9  
7 x 10-10  
Page 64  
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In-115m  
In-115  
I-125  
I-126  
I-129  
I-131  
I-132  
I-133  
I-134  
I-135  
Ir-190  
Ir-192  
Ir-194  
Fe-55  
Fe-59  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
2 x 10-6  
2 x 10-6  
2 x 10-7  
3 x 10-8  
5 x 10-9  
2 x 10-7  
8 x 10-9  
3 x 10-7  
2 x 10-9  
7 x 10-8  
9 x 10-9  
3 x 10-7  
2 x 10-7  
9 x 10-7  
3 x 10-8  
2 x 10-7  
5 x 10-7  
3 x 10-6  
1 x 10-7  
4 x 10-7  
1 x 10-6  
4 x 10-7  
1 x 10-7  
3 x 10-8  
2 x 10-7  
2 x 10-7  
9 x 10-7  
1 x 10-6  
1 x 10-7  
5 x 10-8  
1 x 10-2  
1 x 10-2  
3 x 10-3  
3 x 10-3  
4 x 10-5  
6 x 10-3  
5 x 10-5  
3 x 10-3  
1 x 10-5  
6 x 10-3  
6 x 10-5  
2 x 10-3  
2 x 10-3  
5 x 10-3  
2 x 10-4  
1 x 10-3  
4 x 10-3  
2 x 10-2  
7 x 10-4  
2 x 10-3  
6 x 10-3  
5 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-3  
9 x 10-4  
2 x 10-2  
7 x 10-2  
2 x 10-3  
2 x 10-3  
----------  
----------  
----------  
----------  
7 x 10-4  
7 x 10-4  
1 x 10-2  
1 x 10-2  
4 x 10-6  
5 x 10-3  
6 x 10-4  
5 x 10-4  
3 x 10-3  
3 x 10-3  
8 x 10-8  
6 x 10-8  
9 x 10-9  
1 x 10-9  
8 x 10-11  
6 x 10-9  
9 x 10-11  
1 x 10-8  
2 x 10-11  
2 x 10-9  
1 x 10-10  
1 x 10-8  
3 x 10-9  
3 x 10-8  
4 x 10-10  
7 x 10-9  
6 x 10-9  
1 x 10-7  
1 x 10-9  
1 x 10-8  
4 x 10-8  
1 x 10-8  
4 x 10-9  
9 x 10-10  
8 x 10-9  
5 x 10-9  
3 x 10-8  
3 x 10-8  
5 x 10-9  
2 x 10-9  
1 x 10-7  
3 x 10-7  
2 x 10-8  
2 x 10-8  
5 x 10-9  
4 x 10-9  
9 x 10-8  
6 x 10-8  
4 x 10-12  
8 x 10-12  
6 x 10-10  
7 x 10-10  
2 x 10-8  
2 x 10-8  
4 x 10-4  
4 x 10-4  
9 x 10-5  
9 x 10-5  
2 x 10-7  
2 x 10-4  
3 x 10-7  
9 x 10-5  
6 x 10-8  
2 x 10-4  
3 x 10-7  
6 x 10-5  
8 x 10-6  
2 x 10-4  
1 x 10-6  
4 x 10-5  
2 x 10-5  
6 x 10-4  
4 x 10-6  
7 x 10-5  
2 x 10-4  
2 x 10-4  
4 x 10-5  
4 x 10-5  
3 x 10-5  
3 x 10-5  
8 x 10-4  
2 x 10-3  
6 x 10-5  
5 x 10-5  
----------  
----------  
----------  
----------  
2 x 10-5  
2 x 10-5  
4 x 10-4  
4 x 10-4  
1 x 10-7  
2 x 10-4  
2 x 10-5  
2 x 10-5  
1 x 10-4  
1 x 10-4  
Iodine (53)  
Iridium (77)  
Iron (26)  
Krypton (36)  
Kr-85m  
Kr-85  
Kr-87  
Kr-88  
La-140  
Sub** 6 x 10-6  
Sub** 1 x 10-5  
Sub** 1 x 10-6  
Sub** 1 x 10-6  
Lanthanum (57)  
Lead (82)  
S
I
S
I
S
I
S
I
2 x 10-7  
1 x 10-7  
3 x 10-6  
2 x 10-6  
1 x 10-10  
2 x 10-10  
2 x 10-8  
2 x 10-8  
6 x 10-7  
5 x 10-7  
Pb-203  
Pb-210  
Pb-212  
Lu-177  
Lutetium (71)  
S
I
History: 1979 AC; 2016 AACS.  
Page 65  
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R 325.5265 Appendix A5. Concentrations in air and water above natural background.  
Elements M to O.  
Rule 265. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1  
Column 2  
Water  
Column 1  
Column 2  
Water  
Air  
(µCi/ml)  
2 x 10-7  
1 x 10-7  
4 x 10-7  
4 x 10-8  
8 x 10-7  
5 x 10-7  
7 x 10-7  
8 x 10-7  
1 x 10-6  
3 x 10-6  
7 x 10-8  
1 x 10-7  
7 x 10-7  
2 x 10-7  
8 x 10-11  
3 x 10-10  
4 x 10-7  
2 x 10-7  
2 x 10-6  
1 x 10-6  
4 x 10-12  
1 x 10-10  
8 x 10-7  
7 x 10-7  
5 x 10-7  
8 x 10-7  
6 x 10-8  
3 x 10-7  
9 x 10-7  
5 x 10-7  
1 x 10-7  
2 x 10-7  
5 x 10-7  
1 x 10-7  
6 x 10-6  
5 x 10-6  
5 x 10-7  
5 x 10-8  
2 x 10-5  
9 x 10-6  
1 x 10-6  
Air  
(µCi/ml)  
1 x 10-3  
9 x 10-4  
4 x 10-3  
3 x 10-3  
4 x 10-3  
3 x 10-3  
6 x 10-3  
5 x 10-3  
9 x 10-3  
1 x 10-2  
5 x 10-4  
3 x 10-3  
5 x 10-3  
1 x 10-3  
2 x 10-3  
2 x 10-3  
2 x 10-3  
2 x 10-3  
8 x 10-3  
8 x 10-3  
9 x 10-5  
9 x 10-4  
4 x 10-3  
4 x 10-3  
6 x 10-3  
6 x 10-2  
8 x 10-4  
2 x 10-2  
4 x 10-3  
3 x 10-3  
1 x 10-2  
1 x 10-2  
3 x 10-3  
3 x 10-3  
3 x 10-2  
3 x 10-2  
2 x 10-3  
2 x 10-3  
7 x 10-2  
7 x 10-2  
5 x 10-3  
(µCi/ml)  
(µCi/ml)  
3 x 10-5  
3 x 10-5  
1 x 10-4  
1 x 10-4  
1 x 10-4  
1 x 10-4  
2 x 10-4  
2 x 10-4  
3 x 10-4  
5 x 10-4  
2 x 10-5  
1 x 10-4  
2 x 10-4  
4 x 10-5  
7 x 10-5  
8 x 10-5  
6 x 10-5  
6 x 10-5  
3 x 10-4  
3 x 10-4  
3 x 10-6  
3 x 10-5  
1 x 10-4  
1 x 10-4  
2 x 10-4  
2 x 10-3  
3 x 10-5  
7 x 10-4  
1 x 10-4  
1 x 10-4  
4 x 10-4  
4 x 10-4  
1 x 10-4  
1 x 10-4  
9 x 10-4  
9 x 10-4  
7 x 10-5  
7 x 10-5  
3 x 10-3  
2 x 10-3  
2 x 10-4  
Manganese (25)  
Mercury (80)  
Mn-52  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
7 x 10-9  
5 x 10-9  
1 x 10-8  
1 x 10-9  
3 x 10-8  
2 x 10-8  
3 x 10-8  
3 x 10-8  
4 x 10-8  
9 x 10-8  
2 x 10-9  
4 x 10-9  
3 x 10-8  
7 x 10-9  
3 x 10-12  
1 x 10-11  
1 x 10-8  
8 x 10-9  
6 x 10-8  
5 x 10-8  
1 x 10-13  
4 x 10-12  
3 x 10-8  
2 x 10-8  
2 x 10-8  
3 x 10-8  
2 x 10-9  
1 x 10-8  
3 x 10-8  
2 x 10-8  
4 x 10-9  
5 x 10-9  
2 x 10-8  
3 x 10-9  
2 x 10-7  
2 x 10-7  
2 x 10-8  
2 x 10-9  
6 x 10-7  
3 x 10-7  
4 x 10-8  
Mn-54  
Mn-56  
Hg-197m  
Hg-197  
Hg-203  
Molybdenum (42) Mo-99  
Neodymium (60)  
Nd-144  
Nd-147  
Nd-149  
Np-237  
Np-239  
Ni-59  
Neptunium (93)  
Nickel (28)  
Ni-63  
Ni-65  
Niobium (41)  
Osmium (76)  
Nb-93m  
Nb-95  
S
I
S
I
S
I
S
I
Nb-97  
Os-185  
Os-191m  
Os-191  
S
Page 66  
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I
S
I
4 x 10-7  
4 x 10-7  
3 x 10-7  
5 x 10-3  
2 x 10-3  
2 x 10-3  
1 x 10-8  
1 x 10-8  
9 x 10-9  
2 x 10-4  
6 x 10-5  
5 x 10-5  
Os-193  
History: 1979 AC; 2016 AACS.  
R 325.5266 Appendix A6. Concentrations in air and water above natural background.  
Elements P.  
Rule 266. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1  
Column 2  
Water  
Column 1  
Column 2  
Water  
Air  
(µCi/ml)  
1 x 10-6  
7 x 10-7  
6 x 10-7  
4 x 10-7  
7 x 10-8  
8 x 10-8  
8 x 10-7  
6 x 10-7  
7 x 10-6  
5 x 10-6  
1 x 10-6  
3 x 10-7  
6 x 10-6  
5 x 10-6  
8 x 10-7  
6 x 10-7  
2 x 10-12  
3 x 10-11  
2 x 10-12  
4 x 10-11  
2 x 10-12  
4 x 10-11  
9 x 10-11  
4 x 10-8  
2 x 10-12  
4 x 10-11  
2 x 10-6  
2 x 10-6  
2 x 10-12  
3 x 10-11  
5 x 10-10  
2 x 10-10  
2 x 10-6  
1 x 10-7  
2 x 10-7  
Air  
(µCi/ml)  
1 x 10-2  
8 x 10-3  
3 x 10-3  
2 x 10-3  
5 x 10-4  
7 x 10-4  
4 x 10-3  
3 x 10-3  
3 x 10-2  
3 x 10-2  
3 x 10-2  
5 x 10-2  
3 x 10-2  
3 x 10-2  
4 x 10-3  
3 x 10-3  
1 x 10-4  
8 x 10-4  
1 x 10-4  
8 x 10-4  
1 x 10-4  
8 x 10-4  
7 x 10-3  
4 x 10-2  
1 x 10-4  
9 x 10-4  
1 x 10-2  
1 x 10-2  
1 x 10-4  
3 x 10-4  
2 x 10-5  
8 x 10-4  
9 x 10-3  
6 x 10-4  
9 x 10-4  
(µCi/ml)  
(µCi/ml)  
3 x 10-4  
3 x 10-4  
9 x 10-5  
7 x 10-5  
2 x 10-5  
2 x 10-5  
1 x 10-4  
1 x 10-4  
1 x 10-3  
1 x 10-3  
9 x 10-4  
2 x 10-3  
1 x 10-3  
9 x 10-4  
1 x 10-4  
1 x 10-4  
5 x 10-6  
3 x 10-5  
5 x 10-6  
3 x 10-5  
5 x 10-6  
3 x 10-5  
2 x 10-4  
1 x 10-3  
5 x 10-6  
3 x 10-5  
3 x 10-4  
3 x 10-4  
4 x 10-6  
1 x 10-5  
7 x 10-7  
3 x 10-5  
3 x 10-4  
2 x 10-5  
3 x 10-5  
Palladium (46)  
Pd-103  
Pd-109  
P-32  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
5 x 10-8  
3 x 10-8  
2 x 10-8  
1 x 10-8  
2 x 10-9  
3 x 10-9  
3 x 10-8  
2 x 10-8  
2 x 10-7  
2 x 10-7  
4 x 10-8  
1 x 10-8  
2 x 10-7  
2 x 10-7  
3 x 10-8  
2 x 10-8  
7 x 10-14  
1 x 10-12  
6 x 10-14  
1 x 10-12  
6 x 10-14  
1 x 10-12  
3 x 10-12  
1 x 10-9  
6 x 10-14  
1 x 10-12  
6 x 10-8  
8 x 10-8  
6 x 10-14  
1 x 10-12  
2 x 10-11  
7 x 10-12  
7 x 10-8  
4 x 10-9  
7 x 10-9  
Phosphorus (15)  
Platinum (78)  
Pt-191  
Pt-193m  
Pt-193  
Pt-197m  
Pt-197  
Pu-238  
Pu-239  
Pu-240  
Pu-241  
Pu-242  
Pu-243  
Pu-244  
Po-210  
K-42  
Plutonium (94)  
Polonium (84)  
Potassium (19)  
S
I
S
Praseodymium (59) Pr-142  
Page 67  
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I
S
I
S
I
S
I
S
I
S
I
S
I
2 x 10-7  
3 x 10-7  
2 x 10-7  
6 x 10-8  
1 x 10-7  
3 x 10-7  
2 x 10-7  
2 x 10-9  
8 x 10-10  
1 x 10-12  
1 x 10-10  
6 x 10-7  
2 x 10-7  
9 x 10-4  
1 x 10-3  
1 x 10-3  
6 x 10-3  
6 x 10-3  
1 x 10-3  
1 x 10-3  
7 x 10-3  
7 x 10-3  
3 x 10-5  
8 x 10-4  
4 x 10-3  
3 x 10-3  
5 x 10-9  
1 x 10-8  
6 x 10-9  
2 x 10-9  
3 x 10-9  
1 x 10-8  
8 x 10-9  
6 x 10-11  
3 x 10-11  
4 x 10-14  
4 x 10-12  
2 x 10-8  
6 x 10-9  
3 x 10-5  
5 x 10-5  
5 x 10-5  
2 x 10-4  
2 x 10-4  
4 x 10-5  
4 x 10-5  
2 x 10-4  
2 x 10-4  
9 x 10-7  
2 x 10-5  
1 x 10-4  
1 x 10-4  
Pr-143  
Pm-147  
Pm-149  
Pa-230  
Pa-231  
Pa-233  
Promethium (61)  
Protactinium (91)  
History: 1979 AC; 2016 AACS.  
R 325.5267 Appendix A7. Concentrations in air and water above natural background.  
Elements R and S.  
Rule 267. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1  
Column 2  
Water  
Column 1  
Column 2  
Water  
Air  
(µCi/ml)  
2 x 10-9  
2 x 10-10  
5 x 10-9  
7 x 10-10  
3 x 10-11  
5 x 10-11  
7 x 10-11  
4 x 10-11  
3 x 10-7  
----------  
1 x 10-7  
3 x 10-6  
2 x 10-7  
6 x 10-7  
2 x 10-7  
9 x 10-6  
5 x 10-7  
4 x 10-7  
2 x 10-7  
8 x 10-5  
6 x 10-5  
8 x 10-7  
5 x 10-7  
3 x 10-7  
Air  
(µCi/ml)  
2 x 10-5  
1 x 10-4  
7 x 10-5  
2 x 10-4  
4 x 10-7  
9 x 10-4  
8 x 10-7  
7 x 10-4  
----------  
----------  
----------  
2 x 10-2  
8 x 10-3  
3 x 10-3  
1 x 10-3  
7 x 10-2  
4 x 10-2  
2 x 10-3  
9 x 10-4  
4 x 10-1  
3 x 10-1  
4 x 10-3  
3 x 10-3  
2 x 10-3  
(µCi/ml)  
(µCi/ml)  
7 x 10-7  
4 x 10-6  
2 x 10-6  
5 x 10-6  
3 x 10-8  
3 x 10-5  
3 x 10-8  
3 x 10-5  
----------  
----------  
----------  
6 x 10-4  
3 x 10-4  
9 x 10-5  
5 x 10-5  
3 x 10-3  
2 x 10-3  
6 x 10-5  
3 x 10-5  
1 x 10-2  
1 x 10-2  
1 x 10-4  
1 x 10-4  
7 x 10-5  
Radium (88)  
Ra-223  
Ra-224  
Ra-226  
Ra-228  
Rn-220  
S
I
S
I
S
I
S
I
S
I
S
S
I
S
I
S
I
S
I
S
I
S
I
S
6 x 10-11  
8 x 10-12  
2 x 10-10  
2 x 10-11  
3 x 10-12  
2 x 10-12  
2 x 10-12  
1 x 10-12  
1 x 10-8  
----------  
3 x 10-9  
9 x 10-8  
5 x 10-9  
2 x 10-8  
8 x 10-9  
3 x 10-7  
2 x 10-8  
1 x 10-8  
6 x 10-9  
3 x 10-6  
2 x 10-6  
3 x 10-8  
2 x 10-8  
1 x 10-8  
Radon (86)  
Rn-222***  
Re-183  
Rhenium (75)  
Re-186  
Re-187  
Re-188  
Rh-103m  
Rh-105  
Rb-86  
Rhodium (45)  
Rubidium (37)  
Page 68  
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I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
7 x 10-8  
5 x 10-7  
7 x 10-8  
2 x 10-6  
2 x 10-6  
5 x 10-7  
8 x 10-8  
7 x 10-7  
5 x 10-7  
8 x 10-8  
6 x 10-9  
7 x 10-11  
3 x 10-10  
6 x 10-8  
1 x 10-7  
5 x 10-7  
4 x 10-7  
2 x 10-7  
2 x 10-8  
6 x 10-7  
5 x 10-7  
2 x 10-7  
1 x 10-7  
1 x 10-6  
1 x 10-7  
6 x 10-6  
1 x 10-6  
6 x 10-7  
8 x 10-8  
2 x 10-7  
1 x 10-8  
3 x 10-7  
2 x 10-7  
2 x 10-7  
9 x 10-9  
1 x 10-6  
1 x 10-7  
4 x 10-5  
3 x 10-5  
2 x 10-7  
1 x 10-7  
3 x 10-8  
4 x 10-8  
1 x 10-9  
5 x 10-9  
4 x 10-7  
3 x 10-7  
7 x 10-4  
3 x 10-3  
5 x 10-3  
1 x 10-2  
1 x 10-2  
2 x 10-3  
2 x 10-3  
3 x 10-3  
3 x 10-3  
4 x 10-4  
3 x 10-4  
2 x 10-3  
2 x 10-3  
1 x 10-2  
1 x 10-2  
2 x 10-3  
2 x 10-3  
1 x 10-3  
1 x 10-3  
3 x 10-3  
3 x 10-3  
8 x 10-4  
8 x 10-4  
9 x 10-3  
8 x 10-3  
3 x 10-2  
6 x 10-3  
3 x 10-3  
3 x 10-3  
9 x 10-4  
9 x 10-4  
1 x 10-3  
1 x 10-3  
1 x 10-3  
9 x 10-4  
6 x 10-3  
8 x 10-4  
2 x 10-1  
2 x 10-1  
3 x 10-3  
5 x 10-3  
3 x 10-4  
8 x 10-4  
1 x 10-5  
1 x 10-3  
2 x 10-3  
1 x 10-3  
2 x 10-9  
2 x 10-8  
2 x 10-9  
8 x 10-8  
6 x 10-8  
2 x 10-8  
3 x 10-9  
2 x 10-8  
2 x 10-8  
3 x 10-9  
2 x 10-10  
2 x 10-12  
9 x 10-12  
2 x 10-9  
5 x 10-9  
2 x 10-8  
1 x 10-8  
8 x 10-9  
8 x 10-10  
2 x 10-8  
2 x 10-8  
6 x 10-9  
5 x 10-9  
4 x 10-8  
4 x 10-9  
2 x 10-7  
3 x 10-8  
2 x 10-8  
3 x 10-9  
7 x 10-9  
3 x 10-10  
1 x 10-8  
8 x 10-9  
6 x 10-9  
3 x 10-10  
4 x 10-8  
5 x 10-9  
1 x 10-6  
1 x 10-6  
8 x 10-9  
4 x 10-9  
3 x 10-10  
1 x 10-9  
3 x 10-11  
2 x 10-10  
2 x 10-8  
9 x 10-9  
2 x 10-5  
1 x 10-4  
2 x 10-4  
4 x 10-4  
3 x 10-4  
8 x 10-5  
8 x 10-5  
1 x 10-4  
1 x 10-4  
1 x 10-5  
1 x 10-5  
6 x 10-5  
7 x 10-5  
4 x 10-4  
4 x 10-4  
8 x 10-5  
8 x 10-5  
4 x 10-5  
4 x 10-5  
9 x 10-5  
9 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-4  
3 x 10-4  
9 x 10-4  
2 x 10-4  
1 x 10-4  
1 x 10-4  
3 x 10-5  
3 x 10-5  
4 x 10-5  
4 x 10-5  
4 x 10-5  
3 x 10-5  
2 x 10-4  
3 x 10-5  
7 x 10-3  
7 x 10-3  
1 x 10-4  
2 x 10-4  
3 x 10-6  
3 x 10-5  
3 x 10-7  
4 x 10-5  
7 x 10-5  
5 x 10-5  
Rb-87  
Ru-97  
Ru-103  
Ru-105  
Ru-106  
Sm-147  
Sm-151  
Sm-153  
Sc-46  
Ruthenium (44)  
Samarium (62)  
Scandium (21)  
Sc-47  
Sc-48  
Selenium (34)  
Silicon (14)  
Silver (47)  
Se-75  
Si-31  
Ag-105  
Ag-110m  
Ag-111  
Na-22  
Na-24  
Sr-85m  
Sr-85  
Sodium (11)  
Strontium (38)  
Sr-89  
Sr-90  
Sr-91  
Page 69  
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Sr-92  
S-35  
S
I
S
I
4 x 10-7  
3 x 10-7  
3 x 10-7  
3 x 10-7  
2 x 10-3  
2 x 10-3  
2 x 10-3  
8 x 10-3  
2 x 10-8  
1 x 10-8  
9 x 10-9  
9 x 10-9  
7 x 10-5  
6 x 10-5  
6 x 10-5  
3 x 10-4  
Sulfur (16)  
History: 1979 AC; 2016 AACS.  
R 325.5268 Appendix A8. Concentrations in air and water above natural background.  
Elements T.  
Rule 268. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1  
Column 2  
Water  
Column 1  
Column 2  
Water  
Air  
(µCi/ml)  
4 x 10-8  
2 x 10-8  
8 x 10-5  
3 x 10-5  
6 x 10-7  
2 x 10-7  
2 x 10-6  
2 x 10-7  
1 x 10-5  
3 x 10-7  
4 x 10-5  
1 x 10-5  
2 x 10-6  
6 x 10-8  
4 x 10-7  
1 x 10-7  
1 x 10-7  
4 x 10-8  
2 x 10-6  
9 x 10-7  
8 x 10-8  
3 x 10-8  
5 x 10-6  
4 x 10-6  
4 x 10-7  
2 x 10-7  
2 x 10-7  
1 x 10-7  
1 x 10-7  
3 x 10-8  
3 x 10-6  
1 x 10-6  
2 x 10-6  
Air  
(µCi/ml)  
1 x 10-3  
1 x 10-3  
4 x 10-1  
3 x 10-1  
3 x 10-3  
1 x 10-3  
1 x 10-2  
5 x 10-3  
5 x 10-2  
2 x 10-2  
2 x 10-1  
8 x 10-2  
1 x 10-2  
5 x 10-3  
5 x 10-3  
3 x 10-3  
2 x 10-3  
2 x 10-3  
8 x 10-3  
5 x 10-3  
1 x 10-3  
6 x 10-4  
2 x 10-2  
2 x 10-2  
2 x 10-3  
1 x 10-3  
9 x 10-4  
6 x 10-4  
1 x 10-3  
1 x 10-3  
1 x 10-2  
7 x 10-3  
9 x 10-3  
(µCi/ml)  
(µCi/ml)  
4 x 10-5  
4 x 10-5  
1 x 10-2  
1 x 10-2  
1 x 10-4  
5 x 10-5  
4 x 10-4  
2 x 10-4  
2 x 10-3  
8 x 10-4  
6 x 10-3  
3 x 10-3  
3 x 10-4  
2 x 10-4  
2 x 10-4  
1 x 10-4  
6 x 10-5  
5 x 10-5  
3 x 10-4  
2 x 10-4  
3 x 10-5  
2 x 10-5  
8 x 10-4  
8 x 10-4  
6 x 10-5  
4 x 10-5  
3 x 10-5  
2 x 10-5  
4 x 10-5  
4 x 10-5  
4 x 10-4  
2 x 10-4  
3 x 10-4  
Tantalum (73)  
Ta-182  
Tc-96m  
Tc-96  
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
1 x 10-9  
7 x 10-10  
3 x 10-6  
1 x 10-6  
2 x 10-8  
8 x 10-9  
8 x 10-8  
5 x 10-9  
4 x 10-7  
1 x 10-8  
1 x 10-6  
5 x 10-7  
7 x 10-8  
2 x 10-9  
1 x 10-8  
4 x 10-9  
5 x 10-9  
1 x 10-9  
6 x 10-8  
3 x 10-8  
3 x 10-9  
1 x 10-9  
2 x 10-7  
1 x 10-7  
1 x 10-8  
6 x 10-9  
7 x 10-9  
4 x 10-9  
3 x 10-9  
1 x 10-9  
9 x 10-8  
4 x 10-8  
7 x 10-8  
Technetium (43)  
Tc-97m  
Tc-97  
Tc-99m  
Tc-99  
Tellurium (52)  
Te-125m  
Te-127m  
Te-127  
Te-129m  
Te-129  
Te-131m  
Te-132  
Tb-160  
Tl-200  
Terbium (65)  
Thallium (81)  
Tl-201  
S
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I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
9 x 10-7  
8 x 10-7  
2 x 10-7  
6 x 10-7  
3 x 10-8  
3 x 10-10  
2 x 10-10  
9 x 10-12  
6 x 10-12  
2 x 10-12  
1 x 10-11  
1 x 10-6  
1 x 10-6  
3 x 10-11  
3 x 10-11  
6 x 10-11  
6 x 10-11  
6 x 10-8  
3 x 10-8  
4 x 10-8  
3 x 10-8  
1 x 10-7  
2 x 10-7  
4 x 10-7  
5 x 10-8  
1 x 10-7  
8 x 10-8  
2 x 10-6  
1 x 10-7  
8 x 10-7  
1 x 10-7  
4 x 10-7  
3 x 10-7  
5 x 10-3  
4 x 10-3  
2 x 10-3  
3 x 10-3  
2 x 10-3  
5 x 10-4  
5 x 10-4  
2 x 10-4  
4 x 10-4  
5 x 10-5  
9 x 10-4  
7 x 10-3  
7 x 10-3  
5 x 10-5  
1 x 10-3  
6 x 10-5  
6 x 10-4  
5 x 10-4  
5 x 10-4  
1 x 10-3  
1 x 10-3  
1 x 10-2  
1 x 10-2  
2 x 10-3  
2 x 10-3  
5 x 10-4  
5 x 10-4  
1 x 10-2  
1 x 10-2  
4 x 10-3  
3 x 10-3  
2 x 10-3  
2 x 10-3  
3 x 10-8  
3 x 10-8  
8 x 10-9  
2 x 10-8  
9 x 10-10  
1 x 10-11  
6 x 10-12  
3 x 10-13  
2 x 10-13  
8 x 10-14  
3 x 10-13  
5 x 10-8  
4 x 10-8  
1 x 10-12  
1 x 10-12  
2 x 10-12  
2 x 10-12  
2 x 10-9  
1 x 10-9  
1 x 10-9  
1 x 10-9  
4 x 10-9  
8 x 10-9  
1 x 10-8  
2 x 10-9  
4 x 10-9  
3 x 10-9  
8 x 10-8  
4 x 10-9  
3 x 10-8  
4 x 10-9  
2 x 10-8  
1 x 10-8  
2 x 10-4  
1 x 10-4  
7 x 10-5  
1 x 10-4  
6 x 10-5  
2 x 10-5  
2 x 10-5  
7 x 10-6  
1 x 10-5  
2 x 10-6  
3 x 10-5  
2 x 10-4  
2 x 10-4  
2 x 10-6  
4 x 10-5  
2 x 10-6  
2 x 10-5  
2 x 10-5  
2 x 10-5  
5 x 10-5  
5 x 10-5  
5 x 10-4  
5 x 10-4  
9 x 10-5  
8 x 10-5  
2 x 10-5  
2 x 10-5  
4 x 10-4  
3 x 10-4  
1 x 10-4  
1 x 10-4  
7 x 10-5  
6 x 10-5  
Tl-202  
Tl-204  
Th-227  
Th-228  
Th-230  
Th-231  
Th-232  
Th-natural  
Th-234  
Tm-170  
Tm-171  
Sn-113  
Sn-125  
W-181  
W-185  
W-187  
Thorium (90)  
Thulium (69)  
Tin (50)  
Tungsten (74)  
History: 1979 AC; 2016 AACS.  
R 325.5269 Appendix A9. Concentrations in air and water above natural background.  
Elements U to Z and certain unlisted radionuclides.  
Rule 269. (See notes in Rule 270.)  
TABLE I  
TABLE II  
Element  
(atomic number)  
Radionuclide*  
Column 1  
Column 2  
Water  
Column 1  
Column 2  
Water  
Air  
(µCi/ml)  
3 x 10-10  
1 x 10-10  
1 x 10-10  
3 x 10-11  
5 x 10-10  
Air  
(µCi/ml)  
1 x 10-4  
1 x 10-4  
8 x 10-4  
8 x 10-4  
9 x 10-4  
(µCi/ml)  
(µCi/ml)  
5 x 10-6  
5 x 10-6  
3 x 10-5  
3 x 10-5  
3 x 10-5  
Uranium (92)  
U-230  
U-232  
U-233  
S
I
S
I
1 x 10-11  
4 x 10-12  
3 x 10-12  
9 x 10-13  
2 x 10-11  
S
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I
S
I
S
I
S
I
S
I
S
I
S
I
S
I
1 x 10-10  
6 x 10-10  
1 x 10-10  
5 x 10-10  
1 x 10-10  
6 x 10-10  
1 x 10-10  
7 x 10-11  
1 x 10-10  
2 x 10-7  
2 x 10-7  
1 x 10-10  
1 x 10-10  
2 x 10-7  
6 x 10-8  
9 x 10-4  
9 x 10-4  
9 x 10-4  
8 x 10-4  
8 x 10-4  
1 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-3  
1 x 10-3  
9 x 10-4  
8 x 10-4  
----------  
----------  
----------  
----------  
3 x 10-3  
3 x 10-3  
6 x 10-4  
6 x 10-4  
1 x 10-1  
1 x 10-1  
8 x 10-4  
8 x 10-4  
2 x 10-3  
2 x 10-3  
8 x 10-4  
8 x 10-4  
4 x 10-12  
2 x 10-11  
4 x 10-12  
2 x 10-11  
4 x 10-12  
2 x 10-11  
4 x 10-12  
3 x 10-12  
5 x 10-12  
8 x 10-9  
6 x 10-9  
5 x 10-12  
5 x 10-12  
6 x 10-9  
2 x 10-9  
4 x 10-7  
3 x 10-7  
3 x 10-7  
1 x 10-7  
2 x 10-8  
2 x 10-8  
4 x 10-9  
3 x 10-9  
8 x 10-7  
6 x 10-7  
1 x 10-9  
1 x 10-9  
1 x 10-8  
1 x 10-8  
6 x 10-9  
5 x 10-9  
3 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-5  
4 x 10-5  
4 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-5  
3 x 10-5  
----------  
----------  
----------  
----------  
1 x 10-4  
1 x 10-4  
2 x 10-5  
2 x 10-5  
3 x 10-3  
3 x 10-3  
3 x 10-5  
3 x 10-5  
6 x 10-5  
6 x 10-5  
3 x 10-5  
3 x 10-5  
1 x 10-4  
2 x 10-4  
7 x 10-5  
6 x 10-5  
2 x 10-3  
2 x 10-3  
8 x 10-4  
8 x 10-4  
6 x 10-5  
6 x 10-5  
2 x 10-5  
2 x 10-5  
----------  
U-  
234****  
U-  
235****  
U-236  
U-  
238****  
U-240  
U-natural  
****  
Vanadium (23)  
Xenon (54)  
V-48  
Xe-131m  
Xe-133m  
Xe-133  
Xe-135  
Yb-175  
Sub** 2 x 10-5  
Sub  
Sub  
1 x 10-5  
1 x 10-5  
4 x 10-6  
7 x 10-7  
6 x 10-7  
1 x 10-7  
1 x 10-7  
2 x 10-5  
2 x 10-5  
4 x 10-8  
3 x 10-8  
4 x 10-7  
3 x 10-7  
2 x 10-7  
1 x 10-7  
Sub  
S
I
S
I
S
I
S
I
S
I
S
I
Ytterbium (70)  
Yttrium (39)  
Y-90  
Y-91m  
Y-91  
Y-92  
Y-93  
Zinc (30)  
Zn-65  
S
1 x 10-7  
3 x 10-3  
4 x 10-9  
I
S
I
S
I
S
I
S
I
6 x 10-8  
4 x 10-7  
3 x 10-7  
7 x 10-6  
9 x 10-6  
1 x 10-7  
3 x 10-7  
1 x 10-7  
3 x 10-8  
1 x 10-7  
9 x 10-8  
1 x 10-6  
5 x 10-3  
2 x 10-3  
2 x 10-3  
5 x 10-2  
5 x 10-2  
2 x 10-2  
2 x 10-2  
2 x 10-3  
2 x 10-3  
5 x 10-4  
5 x 10-4  
----------  
2 x 10-9  
1 x10-8  
1 x 10-8  
2 x 10-7  
3 x 10-7  
4 x 10-9  
1 x 10-8  
4 x 10-9  
1 x 10-9  
4 x 10-9  
3 x 10-9  
3 x 10-8  
Zn-69m  
Zn-69  
Zr-93  
Zr-95  
Zr-97  
Zirconium (40)  
S
I
Any single radionuclide not listed in  
Appendix A1 to A9 with decay mode  
other than alpha emission or spontaneous  
fission and with radioactive half-life less  
than 2 hours. Sub  
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Any single radionuclide not listed in  
Appendix A1 to A9 with decay mode  
other than alpha emission or spontaneous  
fission and with radioactive half-life  
greater than 2 hours.  
Any single radionuclide not listed in  
Appendix A1 to A9 which decays by  
alpha emission or spontaneous fission.  
3 x 10-9  
9 x 10-5  
1 x 10-10  
3 x 10-6  
6 x 10-13  
4 x 10-7  
2 x 10-14  
3 x 10-8  
History: 1979 AC; 2016 AACS.  
R 325.5270 Notes to Appendices A1 to A9.  
Rule 270.  
*Soluble (S): Insoluble (I).  
**"Sub" means that values given are for submersion in a semi-spherical infinite cloud of  
airborne material.  
***For purposes of these rules, it may be assumed that the daughter activity concentrations in the  
following table are equivalent to an air concentration of 10-7 microcuries of radon-222 per  
milliliter of air in equilibrium with the daughters polonium-218, lead-214, bismuth-214, and  
polonium-214:  
Alpha-Emitting Daughter Activity  
Collected per Milliliter of Air  
Maximum Time Between  
Collection  
and Measurement  
Microcuries Total Alpha Disintegrations  
(hours)*†  
0.5  
per milliliter  
7.2 x 10-8  
4.5 x 10-8  
1.3 x 10-8  
0.3 x 10-8  
per minute per milliliter  
0.16  
0.10  
0.028  
0.0072  
1.0  
2.0  
3.0  
*The duration of sample collection and the duration of measurement should be sufficiently short  
compared to the time between collection and measurement, as not to have a statistically  
significant effect upon the results.  
****For soluble mixtures of U-238, U-234, and U-235 in air, chemical toxicity may be the  
limiting factor. If the percent by weight (enrichment) of U-235 is less than 5, the concentration  
value for a 40-hour workweek, table I, is 0.2 milligrams uranium per cubic meter of air average.  
For any enrichment, the product of the average concentration and time of exposure during a 40-  
hour workweek shall not exceed 8 x 10-3 SA µCi-hr/ml, where SA is the specific activity of the  
uranium inhaled. The concentration value for table II is 0.007 milligrams uranium per cubic  
meter of air. The specific activity for natural uranium is 6.77 x 10-7 curies per gram U. The  
specific activity for other mixtures of U-238, U-235, and U-234, if not known, shall be:  
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SA = 3.6 x 10-7 curies/gram U U-depleted  
SA = (0.4 + 0.38 E + 0.0034 E2) 10-6 E> 0.72 where E is the percentage by weight of U-235,  
expressed as percent.  
NOTE: In any case where there is a mixture in air or water of more than 1 radionuclide, the  
limiting values for purposes of this appendix should be determined as follows:  
1. If the identity and concentration of each radionuclide in the mixture are known, the limiting  
values should be derived as follows: Determine, for each radionuclide in the mixture, the ratio  
between the quantity present in the mixture and the limit otherwise established in Appendix “A”  
for the specific radionuclide when not in a mixture. The sum of such ratios for all the  
radionuclides in the mixture may not exceed “1” (i.e., “unity”).  
Example: If radionuclides a, b, and c are present in concentrations Ca, Cb, and Cc, and if the  
applicable Maximum Permissible Concentrations (MPC's) are MPCa, MPCb, and MPCc  
respectively, then the concentrations shall be limited so that the following relationship exists:  
Ca  
MPCa  
Cb  
MPCb  
Cc  
MPCc  
+
+
< 1  
2. If either the identity or the concentration of any radionuclide in the mixture is not known, the  
limiting values for purposes of Appendix "A" shall be:  
a. For purposes of Table I, Column 1 6 x 10-13  
b. For purposes of Table I, Column 2 4 x 10-7  
c. For purposes of Table II, Column 1 2 x 10-14  
d. For purposes of Table II, Column 2 3 x 10-8  
3. If any of the conditions specified hereinafter are met, the corresponding values specified there  
may be used in lieu of those specified in Paragraph 2 above.  
a. If the identity of each radionuclide in the mixture is known but the concentration of one or  
more of the radionuclides in the mixture is not known, the concentration limit for the mixture is  
the limit specified in Appendix “A” for the radionuclide in the mixture having the lowest  
concentration limit; or,  
b. If the identity of each radionuclide in the mixture is not known, but it is known that certain  
radionuclides specified in Appendix “A” are not present in the mixture, the concentration limit  
for the mixture is the lowest concentration limit specified in Appendix “A” for any radionuclide  
that is not known to be absent from the mixture; or  
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TABLE I  
TABLE II  
c. Element (atomic number) and  
radionuclide  
Column 1 Column 2 Column 1 Column 2  
Air  
Water  
Air  
(µCi/ml)  
----------  
Water  
(µCi/ml)  
3 x 10-6  
(µCi/ml) (µCi/ml)  
----------  
If it is known that Sr-90, I-125, I-126,  
I-129, I-131, (I-133, Table II only),  
Pb-210, Po-210, At-211, Ra-223,  
Ra-224, Ra-226, Ac-227, Ra-228,  
Th-230, Pa-231, Th-232, Th-nat,  
Cm-248, Cf-254, and Fm-256 are not  
present  
If it is known that Sr-90, I-125, I-126,  
I-129, I-131, (I-133, Table II only),  
Pb-210, Po-210, Ra-223, Ra-226,  
Ra-228, Pa-231, Th-nat, Cm-248,  
Cf-254, and Fm-256 are not present  
If it is known that Sr-90, I-129, (I-125,  
I-126, I-131, Table II only), Pb-210,  
Ra-226, Ra-228, Cm-248, and Cf-254  
are not present  
If it is known that (I-129, Table II only), ----------  
Ra-226, and Ra-228 are not present  
If it is known that alpha-emitters and  
Sr-90, I-129, Pb-210, Ac-227, Ra-228,  
Pa-230, Pu-241, and Bk-249 are not  
present  
If it is known that alpha-emitters and  
Pb-210, Ac-227, Ra-228, and Pu-241 are  
not present  
If it is known that alpha-emitters and  
Ac-227 are not present  
9 x 10-5  
----------  
----------  
6 x 10-5  
----------  
----------  
2 x 10-6  
2 x 10-5  
6 x 10-7  
3 x 10-6  
----------  
----------  
1 x 10-10  
1 x 10-7  
----------  
3 x 10-9  
3 x 10-10  
----------  
1 x 10-11  
----------  
3 x 10-11  
3 x 10-12  
----------  
----------  
1 x 10-12  
1 x 10-13  
----------  
----------  
If it is known that Ac-227, Th-230,  
Pa-231, Pu-238, Pu-239, Pu-240,  
Pu-242, Pu-244, Cm-248, Cf-249 and  
Cf-251 are not present  
4. If the mixture of radionuclides consists of uranium and its daughter products in ore dust before  
chemical processing of the uranium ore, the values specified below may be used in lieu of those  
determined in accordance with Paragraph 1 above or those specified in Paragraphs 2 and 3.  
a. For purposes of Table I, Column 1, 1 x 10-10 µCi/ml gross alpha activity; or 5 x 10-11 µCi/ml  
natural uranium; or 75 micrograms per cubic meter of air natural uranium.  
b. For purposes of Table II, Column 1, 3 x 10-12 µCi/ml gross alpha activity; or 2 x 10-12 µCi/ml  
natural uranium; or 3 micrograms per cubic meter of air natural uranium.  
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5. For purposes of this note, a radionuclide may be considered as not present in a mixture if (a)  
the ratio of the concentration of that radionuclide in the mixture (Ca) to the concentration limit  
for that radionuclide specified in table II of Appendix “A” (MPCa) does not exceed 1/10,  
Ca  
MPCa  
1
10  
(i.e.,  
<
)
and (b) the sum of such ratios for all radionuclides considered as not present in the mixture does  
not exceed ¼, i.e.,  
Ca  
MPCa  
Cb  
MPCb  
1
4
(i.e.,  
+
+
......<  
)
History: 1979 AC; 2016 AACS.  
R 325.5271 Appendix B. Reference quantities for posting and disposal  
Rule 271.  
Radionuclide  
Americium 241  
Antimony 122  
Antimony 124  
Antimony 125  
Arsenic 73  
Microcuries  
.01  
100  
10  
10  
100  
10  
Arsenic 74  
Arsenic 76  
10  
Arsenic 77  
100  
10  
10  
10  
1
10  
10  
10  
100  
10  
Barium 131  
Barium 133  
Barium 140  
Bismuth 210  
Bromine 82  
Cadmium 109  
Cadmium 115m  
Cadmium 115  
Calcium 45  
Calcium 47  
Carbon 14  
Cerium 141  
Cerium 143  
Cerium 144  
Cesium 131  
Cesium 134m  
Cesium 134  
10  
100  
100  
100  
1
1,000  
100  
1
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Cesium 135  
Cesium 136  
Cesium 137  
Chlorine 36  
Chlorine 38  
Chromium 51  
Cobalt 58m  
Cobalt 58  
10  
10  
10  
10  
10  
1,000  
10  
10  
Cobalt 60  
1
Copper 64  
100  
10  
Dysprosium 165  
Dysprosium 166  
Erbium 169  
Erbium 171  
Europium 152 (9.2h)  
Europium 152 (13yr)  
Europium 154  
Europium 155  
Fluorine 18  
Gadolinium 153  
Gadolinium 159  
Gallium 72  
100  
100  
100  
100  
1
1
10  
1,000  
10  
100  
10  
Germanium 71  
Gold 198  
Gold 199  
100  
100  
100  
10  
100  
1,000  
100  
10  
Hafnium 181  
Holmium 166  
Hydrogen 3  
Indium 113m  
Indium 114m  
Indium 115m  
Indium 115  
Iodine 125  
100  
10  
1
Iodine 126  
1
Iodine 129  
Iodine 131  
0.1  
1
Iodine 132  
10  
Iodine 133  
1
Iodine 134  
10  
Iodine 135  
10  
Iridium 192  
Iridium 194  
Iron 55  
10  
100  
100  
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Iron 59  
10  
Krypton 85  
Krypton 87  
100  
10  
Lanthanum 140  
Lutetium 177  
Manganese 52  
Manganese 54  
Manganese 56  
Mercury 197m  
Mercury 197  
Mercury 203  
Molybdenum 99  
Neodymium 147  
Neodymium 149  
Nickel 59  
10  
100  
10  
10  
10  
100  
100  
10  
100  
100  
100  
100  
10  
Nickel 63  
Nickel 65  
Niobium 93m  
Niobium 95  
100  
10  
10  
Niobium 97  
10  
Osmium 185  
Osmium 191m  
Osmium 191  
Osmium 193  
Palladium 103  
Palladium 109  
Phosphorus 32  
Platinum 191  
Platinum 193m  
Platinum 193  
Platinum 197m  
Platinum 197  
Plutonium 239  
Polonium 210  
Potassium 42  
Praseodymium 142  
Praseodymium 143  
Promethium 147  
Promethium 149  
Radium 226  
10  
100  
100  
100  
100  
100  
10  
100  
100  
100  
100  
100  
.01  
0.1  
10  
100  
100  
10  
10  
.01  
.01  
100  
100  
Radon 222  
Rhenium 186  
Rhenium 188  
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Rhodium 103m  
Rhodium 105  
Rubidium 86  
Rubidium 87  
Ruthenium 97  
Ruthenium 103  
Ruthenium 105  
Ruthenium 106  
Samarium 151  
Samarium 153  
Scandium 46  
Scandium 47  
Scandium 48  
Selenium 75  
100  
100  
10  
10  
100  
10  
10  
1
10  
100  
10  
100  
10  
10  
Silicon 31  
Silver 105  
100  
10  
Silver 110m  
1
Silver 111  
Sodium 24  
100  
10  
Strontium 85  
Strontium 89  
Strontium 90  
Strontium 91  
Strontium 92  
Sulfur 35  
10  
1
0.1  
10  
10  
100  
10  
10  
100  
100  
100  
10  
10  
10  
100  
10  
100  
10  
10  
10  
100  
100  
100  
10  
Tantalum 182  
Technetium 96  
Technetium 97m  
Technetium 97  
Technetium 99m  
Technetium 99  
Tellurium 125m  
Tellurium 127m  
Tellurium 127  
Tellurium 129m  
Tellurium 129  
Tellurium 131m  
Tellurium 132  
Terbium 160  
Thallium 200  
Thallium 201  
Thallium 202  
Thallium 204  
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Thorium (natural)  
Thulium 170  
100*  
10  
Thulium 171  
10  
Tin 113  
10  
Tin 125  
10  
Tungsten 181  
Tungsten 185  
Tungsten 187  
Uranium (natural)  
Uranium 233  
10  
10  
100  
100**  
.01  
.01  
10  
Uranium 234 - 235  
Vanadium 48  
Xenon 131m  
Xenon 133  
Xenon 135  
Ytterbium 175  
Yttrium 90  
1,000  
100  
100  
100  
10  
Yttrium 91  
10  
Yttrium 92  
Yttrium 93  
Zinc 65  
100  
100  
10  
Zinc 69m  
Zinc 69  
100  
1,000  
10  
10  
10  
Zirconium 93  
Zirconium 95  
Zirconium 97  
Any alpha emitting  
radionuclide not listed  
above or mixtures of alpha  
emitters of unknown  
composition  
0.01  
Any radionuclide other  
than alpha emitting  
radionuclides not listed  
above or mixtures of beta  
emitters of unknown  
composition  
0.1  
*Based on alpha disintegration rate of Th-232, Th-230 and their daughter products.  
**Based on alpha disintegration rate of U-238, U-234 and U-235.  
NOTE: For purposes of Rules 224 to 231, where there is involved a combination of nuclides  
in known amounts, the limit for the combination should be derived as follows: Determine, for  
each nuclide in the combination, the ratio between the quantity present in the combination and  
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the limit otherwise established for the specific nuclide when not in combination. The sum of  
such ratios for all the nuclides in the combination may not exceed “1” (i.e., “unity”).  
History: 1979 AC; 2016 AACS.  
R 325.5272 Appendix C. Radioactive surface contamination guides.  
Rule 272.  
Alpha(dpm/100 cm2)  
Beta/Gamma*  
Application  
Total (mR/hr) Removable (dpm/100 cm2)  
Total  
Removable  
Restricted Area  
Basic Guide  
Clean Area  
25,000 (max)  
5,000 (avg)  
1,000  
500  
100  
1.0  
0.5  
5,000  
1,000  
Non-Restricted Area  
Skin, Personal Clothing  
Release of Material or  
Facilities  
500  
2,500 (max)  
500 (avg)  
N.D.**  
100  
0.1  
0.2  
N.D.**  
1,000  
*Measured at 1 cm from the surface  
**N.D. - non-detectable  
NOTES TO APPENDIX C  
It should be emphasized that because of the wide range of physical factors, no one value (of  
the few which can be incorporated in a standard) can relate health effects to contamination levels  
in all the diverse situations in which contamination is measured. Accordingly, standards for  
contamination levels must be used as guides (or decision levels). The above levels shall  
therefore be applied with the following guidance:  
1. The levels are to be used as guides, and in practice professional judgment should be used  
by the health physicist to determine the acceptability of the actual contamination.  
2. Although it is felt that the recommended values should not result in a health hazard, good  
radiation protection practice dictates that a reasonable effort be made to keep actual  
contamination levels below these values.  
3. Compliance with contamination guides shall not be used as evidence that exposing  
persons to internal or external sources of radiation is within the prescribed standards. Biological  
sampling or whole body counting should be used to ascertain internal doses.  
4. For release of material to the general public:  
a. A reasonable effort shall be made to minimize the contamination (i.e. the application  
of additional decontamination procedures have little effect on the contamination levels).  
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b. Surfaces of premises or equipment likely to be contaminated that are inaccessible for  
measurement shall be presumed to be contaminated in excess of the above limits and not  
released.  
5. The levels adopted are for generally used isotopes of high toxicity, therefore lower levels  
may be appropriate for extremely toxic radionuclides and relaxations allowed for less toxic  
radionuclides.  
History: 1979 AC.  
R 325.5273 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5274 Rescinded.  
History: 1979 AC; 2016 AACS.  
PART 6. INDUSTRIAL RADIOGRAPHIC OPERATIONS AND INSTALLATIONS  
R 325.5281 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5282 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5285 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5286 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5287 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5288 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5289 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5290 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5291 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5293 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5294 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5296 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5297 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5298 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5299 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5301 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5302 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5303 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5305 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5306 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5307 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5309 Rescinded.  
History: 1979 AC; 2016 AACS.  
PART 7. MEDICAL X-RAY INSTALLATIONS  
R 325.5311 Rescinded.  
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History: 1979 AC; 2016 AACS.  
R 325.5312 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5315 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5317 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5321 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5322 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5323 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5325 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5331 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5333 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5337 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5347 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5348 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5351 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5352 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5353 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5355 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5357 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5358 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5359 Rescinded.  
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History: 1979 AC; 2016 AACS.  
R 325.5361 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5362 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5365 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5366 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5368 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5371 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5372 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5373 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5375 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5376 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5378 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5379 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5380 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5381 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5383 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5384 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5385 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5386 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5388 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5389 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5390 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5391 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5395 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5396 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5397 Rescinded.  
History: 1979 AC; 2016 AACS.  
PART 10. VETERINARY X-RAY INSTALLATIONS  
R 325.5401 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5402 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5403 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5404 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5405 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5407 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5409 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5411 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5417 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5418 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5421 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5422 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5423 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5425 Rescinded.  
History: 1979 AC; 2016 AACS.  
PART 11. PARTICLE ACCELERATOR INSTALLATIONS  
R 325.5431 Purpose and scope.  
Rule 431. (1) This part establishes procedures for the licensing or registration of particle  
accelerators, a classification system for particle accelerator installations and use, and radiation  
safety requirements for persons utilizing all types of particle accelerators except those  
specifically exempted from this part.  
(2) This part applies to all licensees and registrants who use particle accelerators for any  
purpose other than those exempted under Rule 432.  
(3) In addition to the requirements of this part, all licensees and registrants are subject to the  
applicable provisions of the other parts.  
History: 1979 AC; 2016 AACS.  
R 325.5432 Definitions.  
Rule 432. (1) "Particle accelerator" or "accelerator", as used in this part, means a radiation  
machine designed for or capable of accelerating electrically charged particles, such as electrons,  
protons, or deuterons, with an electrical potential in excess of 1 MeV. Radiation machines  
designed and used exclusively for the production of electron beams or x- radiation for any of the  
following purposes, except those capable of producing radioactive material in excess of exempt  
quantities listed in schedule B of Rule 147, are excluded from this definition:  
(a) The diagnosis or treatment of patients.  
(b) Industrial radiography.  
(c) Examination of the microscopic structure of materials.  
(d) Manufacturing process control.  
(e) Research and development.  
(f) Demonstration of scientific principles for educational purposes.  
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(2) "Radiation protection supervisor" means 1 specific individual appointed by the licensee  
or registrant who has been delegated the responsibility and authority to govern the operation of  
the accelerator in such a manner as to comply with the provisions of this part and part 5 and to  
enforce any written procedures approved by the department.  
History: 1979 AC; 2016 AACS.  
LICENSE OR REGISTRATION  
R 325.5435 General provisions.  
Rule 435. Except as otherwise provided in these rules, a person shall not manufacture,  
produce, own, receive, acquire, possess, use, transport, transfer, or dispose of a research,  
production, processing, or treatment particle accelerator capable of producing radioactive  
material in excess of exempt quantities listed in schedule B of Rule 147 unless authorized in a  
specific license issued pursuant to part 2.  
History: 1979 AC; 2016 AACS.  
R 325.5437 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5438 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5439 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5440 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5441 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5442 Rescinded.  
History: 1979 AC; 2016 AACS.  
SAFETY REQUIREMENTS FOR THE USE  
OF PARTICLE ACCELERATORS  
R 325.5445. General provisions.  
Rule 445. (1) Rules 445 to 455 establish radiation safety requirements for the use of particle  
accelerators. The provisions of such rules are in addition to, and not in substitution for,  
other applicable provisions of these rules.  
(2) A licensee or registrant shall be responsible for assuring that all requirements of this  
part are met.  
History: 1979 AC.  
R 325.5446 Limitations.  
Rule 446. The radiation safety committee or the radiation protection supervisor may  
terminate the operations at an accelerator facility or of a class D operation if this action is  
deemed necessary to protect health and minimize danger to public health and safety or property.  
History: 1979 AC; 2016 AACS.  
R 325.5447 Shielding.  
Rule 447. (1) The design and shielding specifications for an accelerator shall be submitted  
and approved before issuance of a license by the department. After construction and installation,  
the radiation safety of the installation shall be established by a protection survey conducted in  
accord with Rule 221. A written report of the initial survey shall be submitted to the department  
and approved in writing before continued operation of the accelerator.  
(2) Each accelerator installation shall be provided with such primary or secondary barriers  
as are necessary to assure compliance with Rules 203, 205, and 211.  
History: 1979 AC; 2016 AACS.  
R 325.5448 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5449 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5450 Equipment control and operations.  
Rule 450. (1) A building housing a fixed particle accelerator shall not be left unattended  
without locking the building or portions thereof in some manner that will prevent unauthorized  
entry into the control room or target room, or any access to areas that may contain induced  
radioactivity resulting from accelerator operation.  
(2) A mobile or portable particle accelerator shall not be left unattended without locking the  
room or building in which it is housed in some manner that will prevent its removal by  
unauthorized persons.  
(3) Access to or possession of keys or combinations used to comply with the requirements  
of this rule shall be limited to specific authorized persons approved by the radiation protection  
supervisor.  
History: 1979 AC; 2016 AACS.  
R 325.5452 Radiation surveys.  
Rule 452. (1) A licensee or registrant shall maintain at each accelerator installation  
appropriate calibrated and operable portable radiation monitoring instruments to make physical  
radiation surveys as required by this part and part 5.  
(2) Portable radiation monitoring instruments shall be capable by design, calibration, and  
operation of measuring the intensity of the various types and energies of radiation produced by  
the accelerator. These instruments shall be tested for proper operation at the beginning of each  
day they are to be used and calibrated at intervals not to exceed 3 months.  
(3) During repair or calibration of a radiation monitoring instrument, a spare calibrated and  
operable instrument shall be provided or accelerator operations which require the instrument  
shall be terminated until required instrumentation is available.  
(4) A radiation protection survey shall be performed and documented in accord with Rule  
221 when changes have been made in shielding, operation, equipment, or occupancy of adjacent  
areas, and periodically to check for unknown changes and malfunctioning equipment.  
(5) Whenever applicable, periodic surveys shall be made to determine the amount of  
airborne radioactivity present in areas of airborne hazards.  
(6) Whenever applicable, periodic smear surveys shall be made to determine the degree of  
contamination in target and other pertinent areas.  
(7) All area surveys shall be made in accordance with the written procedures established by  
a health physics consultant or the radiation protection supervisor of the accelerator facility and  
approved by the department.  
(8) Records of all radiation protection surveys, calibration results, instrumentation tests, and  
smear results shall be kept current and on file at each accelerator facility.  
History: 1979 AC; 2016 AACS.  
R 325.5454 Ventilation systems.  
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Rule 454. (1) An accessible airborne radioactivity area shall be provided with ventilation  
adequate to reduce airborne radioactivity to concentrations that do not exceed the limits specified  
in column 1, table I of Rules 261 to 269.  
(2) A licensee or registrant shall not vent, release, or otherwise discharge concentrations of  
radioactive material from an airborne radioactivity area to an uncontrolled area that exceed the  
limits specified in table II of Rules 261 to 269 except as authorized pursuant to subrule (2) of  
Rule 238(2) of part 5. For purposes of this subrule, concentrations may be averaged over a  
period not greater than 1 year.  
History: 1979 AC; 2016 AACS.  
R 325.5455 Special precautions.  
Rule 455. A licensee or registrant shall not permit dismantling, repair, or servicing of any  
portion of the accelerator or changing of target materials by any persons unless such persons  
have been approved for such activity by the radiation protection supervisor. The radiation  
protection supervisor shall determine that such persons are the following:  
(a) Qualified by training or experience to conduct such activities safely with respect to  
potential radiation hazards.  
(b) Knowledgeable regarding the potential hazards of induced radioactivity.  
(c) Provided with appropriate monitoring instruments and dosimeters.  
(d) Informed of any special procedures or precautions necessary to protect themselves and  
others from radiation exposure or spread of contamination.  
History: 1979 AC; 2016 AACS.  
PART 12. SEALED RADIOACTIVE SOURCES IN THE HEALING ARTS  
R 325.5461 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5462 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5464 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5465 Rescinded.  
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History: 1979 AC; 2016 AACS.  
R 325.5466 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5468 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5471 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5474 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5475 Rescinded  
History: 1979 AC; 2016 AACS.  
PART 13. MISCELLANEOUS SOURCES  
R 325.5481 Purpose and scope.  
Rule 481. (1) This part establishes radiation safety requirements for miscellaneous radiation  
sources and for persons utilizing such sources not exempted under Rules 31 to 33 and not  
specifically covered elsewhere by these rules.  
(2) This part applies to all persons who use sources of radiation not specifically covered by  
the other parts.  
(3) In addition to the requirements of this part all persons and activities covered by this part  
are subject to the applicable provisions of parts 1, 2, and 5.  
History: 1979 AC; 2016 AACS.  
R 325.5482 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5484 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5485 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5486 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5487 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5491 Rescinded  
History: 1979 AC; 2016 AACS.  
R 325.5492 Rescinded  
History: 1979 AC; 2016 AACS.  
R 325.5493 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5494 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5495 Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5501 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5505 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5506 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5507 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5508 Rescinded.  
History: 1979 AC; 2016 AACS.  
OTHER MISCELLANEOUS SOURCES  
R 325.5511 License or registration conditions.  
Rule 511. Types of radiation sources and uses not specifically covered by these rules shall  
be subject to specific requirements designated by the department in the form of license or  
registration conditions for the protection of public health, safety, and property until such time  
that these rules are amended to specifically cover such sources and uses.  
History: 1979 AC; 2016 AACS.  
R 325.5601 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5601a Rescinded.  
History: 1979 AC; 2016 AACS.  
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R 325.5602 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5603 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5605 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5606 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5607 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5608 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5609 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5610 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5611 Rescinded.  
History: 1979 AC; 2016 AACS.  
Page 99  
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R 325.5612 Rescinded.  
History: 1979 AC; 2016 AACS.  
R 325.5613 Rescinded.  
History: 1979 AC; 2016 AACS.  
MAMMOGRAPHY SUPERVISOR  
R 325.5617 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5618 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5619 Rescinded.  
History: 1993 AACS; 2013 AACS.  
OPERATORS OF MAMMOGRAPHY EQUIPMENT  
R 325.5621 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5622 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5623 Rescinded.  
History: 1993 AACS; 2013 AACS.  
Page 100  
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R 325.5624 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5625 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5626 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5627 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5628 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5629 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5630 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5631 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5632 Rescinded.  
History: 1993 AACS; 2013 AACS.  
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R 325.5633 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5634 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5635 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5637 Rescinded.  
History: 1993 AACS; 2013 AACS; 2016 AACS.  
R 325.5638 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5639 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5640 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5641 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5642 Rescinded.  
History: 1993 AACS; 2013 AACS.  
Page 102  
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R 325.5643 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5644 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5645 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5646 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5647 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5648 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5649 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5650 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5651 Rescinded.  
History: 1993 AACS; 2013 AACS.  
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R 325.5652 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5655 Rescinded.  
History: 1993 AACS; 2013 AACS; 2016 AACS.  
R 325.5656 Rescinded.  
History: 1993 AACS; 2013 AACS; 2016 AACS.  
R 325.5657 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5658 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5659 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5660 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5661 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5662 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5663 Rescinded.  
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History: 1993 AACS; 2013 AACS.  
R 325.5664 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5665 Rescinded.  
History: 1993 AACS; 2013 AACS.  
R 325.5667 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5668 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5669 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5674 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5675 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5676 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5677 Rescinded.  
History: 2013 AACS; 2016 AACS.  
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R 325.5678 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5679 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5681 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5682 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5683 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5684 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5685 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5686 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5687 Rescinded.  
History: 2013 AACS; 2016 AACS.  
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R 325.5688 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5689 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5690 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5691 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5692 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5693 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5694 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5695 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5696 Rescinded.  
History: 2013 AACS; 2016 AACS.  
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R 325.5697 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5698 Rescinded.  
History: 2013 AACS; 2016 AACS.  
R 325.5701 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5703 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5705 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5707 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5709 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5711 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5713 Rescinded.  
History: 2011 AACS; 2016 AACS.  
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R 325.5715 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5717 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5719 Rescinded.  
History: 2011 AACS; 2016 AACS.  
R 325.5721 Rescinded.  
History: 2011 AACS; 2016 AACS.  
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