DEPARTMENT OF LABOR AND ECONOMIC OPPORTUNITY  
DIRECTOR'S OFFICE  
GENERAL INDUSTRY SAFETY AND HEALTH STANDARD  
Filed with the secretary of state on March 26, 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 408.16202, R 408.16207, R 408.16211, R 408.16226, and R 408.16234 of the  
Michigan Administrative Code are amended and R 408.16223, R 408.16227, and  
R 408.16251 are rescinded, as follows:  
PART 62. PLASTIC MOLDING  
R 408.16202 Referenced standards.  
Rule 6202. The following Michigan Occupational Safety and Health Administration  
(MIOSHA) standards are referenced in these rules. Up to 5 copies of these standards may  
be obtained at no charge from the Michigan Department of Labor and Economic  
Opportunity, MIOSHA Regulatory Services Section, 530 West Allegan Street, P.O. Box  
30643, Lansing, Michigan, 48909-8143 or via the internet at the following website:  
www.michigan.gov/mioshastandards. For quantities greater than 5, the cost, at the time of  
adoption of these rules, is 4 cents per page.  
(a) General Industry Safety and Health Standard Part 2. “Walking-Working Surfaces,”  
R 408.10201 to R 408.10241.  
(b) General Industry Safety Standard Part 85. “The Control of Hazardous Energy  
Sources,” R 408.18501 to R 408.18599.  
R 408.16207 Definitions; R, S.  
Rule 6207. (1) "Rotational molding" means a method of making hollow articles by  
charging a hollow rotating mold with a plastic material. After the heated material covers  
all surfaces of the mold it is cooled and stripped out.  
(2) "Safety factor" means the ratio of the breaking strength of a piece of material or object  
to the maximum designed load or stress applied when in use.  
(3) “Safety gate” means a moveable, interlocked guard allowing the operator access to  
the point of operation to perform production related tasks.  
February 4, 2021  
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(4) "Ship-lap machine" means a powered machine equipped with feed rolls and milling  
cutters for the purpose of cutting grooves in the edge of expanded sheet material.  
(5) "Spin welding" means a method of fusing 2 objects together by spinning 1 or both until  
frictional heat melts the interface. The spinning is then stopped and pressure applied to  
both objects.  
R 408.16211 Employer responsibilities.  
Rule 6211. (1) An employer shall provide training to an employee regarding the operating  
procedures, hazards, and safeguards of any assigned job.  
(2) An employer shall not allow a machine to be operated if the machine is not guarded  
as prescribed by this part or has a known defect that could affect the safety of an employee.  
(3) An employer shall ensure that all safety devices are checked and found to be functional  
and properly adjusted.  
EQUIPMENT INSTALLATION AND MAINTENANCE  
R 408.16223 Rescinded.  
R 408.16226 Controls.  
Rule 6226. (1) An operating control shall be guarded against accidental contact. A control  
button or lever shall be identified as to its function.  
(2) If a machine requires more than 1 operator, and if each operator is exposed to a point  
of operation, the controls shall be activated concurrently before the machine will operate.  
(3) A machine shall be provided with an emergency stop control at each operator station.  
The stop control shall be red in color and readily accessible. A button, if used, shall have a  
mushroom shape.  
(4) A machine shall be provided with a means that, upon power failure, will prevent  
automatic restarting upon the restoration of power. Fire, coolant, and sump pumps are  
excepted from the requirements of this subrule.  
(5) When used, interlocks shall be installed to minimize the possibility of accidental  
operation or tampering.  
(6) Where more than 1 operator is assigned to a plastic molding machine that is not  
equipped with interlocked gates and the operator is exposed to a point of operation, or when  
hazardous motion in or near the point of operation could cause injury, each operator shall  
be provided with a device that prevents reaching into the point of operation during the  
closing cycle.  
(7) Two-hand control devices shall be located in a manner to prevent bridging.  
R 408.16227 Rescinded.  
SPECIFIC EQUIPMENT  
R 408.16234 Injection molding machinery.  
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Rule 6234. (1) An injection molding machine, except for one with a movable table that is  
subject to the provisions of subrule (4) of this rule, shall be equipped with a safety gate or  
guard that is designed and constructed to prevent an employee from reaching into the point  
of operation, except when the gate is open.  
(2) A horizontal injection molding machine shall have the safety gate interlocked to stop  
or prevent mold-closing by any 2 of the following:  
(a) An electrical mold-closing control.  
(b) Hydraulic or pneumatic valves that control mold closing.  
(c) A mechanical device that prevents mold closing.  
(d) A second electrical mold closing control (all electrical horizontal injection molding  
machines).  
(3) A vertical clamp injection molding machine shall have a mechanical restraint device  
to prevent unintentional gravity descent of the mold, and shall have the safety gate  
interlocked to stop or prevent mold-closing by any 2 of the following:  
(a) An electrical mold closing control.  
(b) Hydraulic or pneumatic valves that control mold closing.  
(c) A second electrical mold closing control (all electrical vertical injection molding  
machines).  
(4) An injection molding machine that uses a movable table to hold the lower mold shall  
be provided with a guard or device that is designed and constructed to deny an operator  
access to the point of operation during machine cycle.  
(5) An injection molding machine shall be equipped with a fixed or an interlocked  
movable or removable guard, or other device that is designed and constructed to prevent  
an employee from reaching into the clamping mechanism.  
(6) When purging an injection molding machine, an employee shall be protected from the  
purging splatter by a shield that is fixed, portable, or worn on the employee. The same  
shielding shall be used when servicing a heated runner manifold nozzle.  
(7) An injection molding machine that uses an extruding machine that has an exposed  
feed screw shall have the screw guarded as prescribed by R 408.16233(4).  
(8) Employers engaged in mold changes on injection molding machines shall comply with  
General Industry Safety Standard Part 85. “The Control of Hazardous Energy Sources,”  
(Lockout/Tagout), as referenced in R 408.16202.  
R 408.16251 Rescinded.  
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