DEPARTMENT OF LABOR AND ECONOMIC OPPORTUNITY  
DIRECTOR’S OFFICE  
IONIZING RADIATION RULES GOVERNING THE USE OF RADIATION  
MACHINES  
Filed with the secretary of state on June 9, 2023  
These rules become effective immediately after filing with the secretary of state unless  
adopted under section 33, 44, or 45a(9) of the administrative procedures act of 1969,  
1969 PA 306, MCL 24.233, 24.244, or 24.245a. Rules adopted under these sections  
become effective 7 days after filing with the secretary of state.  
(By authority conferred on the director of the department of labor and economic  
opportunity by sections 13515, 13521, 13522, and 13527 of the public health code, 1978  
PA 368, MCL 333.13515, 333.13521, 333.13522, and 333.13527 and Executive  
Reorganization Order Nos. 1996-1, 1996-2, 2003-1, 2011-4, and 2019-3, MCL 330.3101,  
445.2001, 445.2011, 445.2030, and 125.1998)  
R 333.5065 of the Michigan Administrative Code is amended, as follows:  
PART 3. STANDARDS FOR PROTECTION AGAINST RADIATION FOR  
USERS OF RADIATION MACHINES  
GENERAL PROVISIONS  
R 333.5065 Location of individual monitoring devices.  
Rule 65. If R 333.5064 or other parts of these rules require occupational dose  
monitoring for an individual, the registrant shall ensure that the individual wears an  
individual monitoring device or devices according to 1 of the following:  
(a) An individual monitoring device used for monitoring the dose to the whole body  
shall be worn at the unshielded location of the whole body likely to receive the highest  
exposure. When a protective apron is worn, the location of the individual monitoring  
device is typically at the neck as described in R 333.5057(3)(b)(i).  
(b) An individual monitoring device used to monitor the dose to an embryo or fetus of  
a declared pregnant woman, pursuant to R 333.5059(1), shall be worn at the waist under  
any protective apron being worn by the woman.  
(c) An individual monitoring device used for monitoring the lens dose equivalent, to  
demonstrate compliance with R 333.5057(1)(b)(i), shall be worn at the neck, outside any  
protective apron being worn by the monitored individual, or at an unshielded location  
closer to the eye.  
(d) An individual monitoring device used for monitoring the dose to the skin of the  
extremities, to demonstrate compliance with R 333.5057(1)(b)(ii), shall be worn on the  
extremity likely to receive the highest exposure. The individual monitoring device shall  
be oriented to measure the highest dose to the extremity being monitored.  
April 26, 2023  
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