DEPARTMENT OF LABOR AND ECONOMIC OPPORTUNITY  
DIRECTOR'S OFFICE  
GENERAL INDUSTRY SAFETY AND HEALTH STANDARD  
Filed with the secretary of state on May 6, 2021  
These rules take effect immediately upon filing with the secretary of state unless adopted  
under section 33, 44, or 45a(6) 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 16 and 21 of the Michigan occupational safety and health act, 1974  
PA 154, MCL 408.1016 and 408.1021, and Executive Reorganization Order Nos. 1996-2,  
2003-1, 2008-4, 2011-4, and 2019-3, MCL 445.2001, 445.2011, 445.2025, 445.2030, and  
125.1998)  
R 408.14901 and R 408.14923 of the Michigan Administrative Code are amended, and R  
408.14902 is rescinded, as follows:  
PART 49. SLINGS  
R 408.14901 Scope and adoption of standard.  
Rule 4901. (1) This part sets forth the requirements for slings and their construction,  
care, and use in, around, and about a place of employment. Types of slings included in this  
part are chain, wire rope, metal mesh, 3-strand natural or synthetic rope, and synthetic web  
made from nylon, polyester, and polypropylene.  
(2) The following standard is adopted by reference in these rules, American Society of  
Mechanical Engineers Standard ASME B-30.9 “Slings,” 1990 edition. This standard may be  
purchased from IHS Global, 15 Inverness Way East, Englewood, Colorado, 80112, USA,  
telephone number: 1-800-854-7179 or via the internet at website: http://global.ihs.com at a  
cost as of the time of adoption of these amendments of $60.00.  
(3) The standard adopted in subrule (2) of this rule is also available for inspection at the  
Department of Labor and Economic Opportunity, MIOSHA, Standards and FOIA Section,  
530 West Allegan Street, P.O. Box 30643, Lansing, Michigan, 48909-8143.  
(4) Copies of the standard adopted in subrule (2) of this rule may be obtained from the  
publisher or may also be obtained from the Department of Labor and Economic Opportunity,  
MIOSHA, Standards and FOIA Section, 530 West Allegan Street, P.O. Box 30643, Lansing,  
Michigan, 48909-8143, at the cost charged in this rule, plus $20.00 for shipping and  
handling.  
February 4, 2021  
R 408.14902 Rescinded.  
R 408.14923 Inspections; records; removal from service; proof testing.  
Rule 4923. (1) In addition to the inspection prescribed by R 408.14912, an employer shall  
designate an employee to make a thorough periodic inspection of an alloy steel chain sling in  
use on a regular basis. An employer shall determine the regularity of inspection based on all  
of the following factors:  
(a) Frequency of sling use.  
(b) Severity of service conditions.  
(c) Nature of lifts being made.  
(d) Experience gained on the service life of slings used in similar circumstances.  
The designated employee shall inspect an alloy steel chain sling at least once every 12  
months.  
(2) The employer shall make and maintain a record of the most recent month in which each  
alloy steel chain sling was thoroughly inspected and shall make the record available for  
examination.  
(3) The employee designated to make the inspection of an alloy steel chain sling shall make  
a thorough inspection for all of the following:  
(a) Wear.  
(b) Defective welds.  
(c) Deformation.  
(d) An increase in length beyond acceptable limits established in this part.  
If the defects or deteriorations are present, then the designated employee shall immediately  
remove the sling from service.  
(4) The employer shall ensure that, before use, each new, repaired, or reconditioned alloy  
steel chain sling, including all welded components in the sling assembly, is proof-tested by  
the sling manufacturer in accordance with ASME B-30.9 “Slings,” 1990 edition, as adopted  
in R 408.14901.  
(5) The employer shall retain a certificate of the proof test and shall make it available for  
examination.  
(6) If the chain size at any point of the link is less than that stated in Table 1, the employer  
shall remove the chain from service.  
TABLE 1  
MINIMUM ALLOWABLE CHAIN SIZE AT ANY POINT OF LINK  
Minimum allowable chain size  
Chain size (inches)  
(inches)  
1/4  
13/64  
19/64  
25/64  
31/64  
19/32  
45/64  
13/16  
29/32  
1
3/8  
1/2  
5/8  
3/4  
7/8  
1
1 1/8  
1 1/4  
1 3/8  
1 1/2  
1 3/4  
1-3/32  
1-3/16  
1-13/32