Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › Construction Safety and Health Standard › Part 14 - TUNNELS, SHAFTS, CAISSONS, AND COFFERDAMS › TUNNELS AND SHAFTS › Section R. 408.41476 - General requirements for cranes and hoists

Current through Vol. 24-12, July 15, 2024
Rule 1476.
(1)
						A competent person shall check each safety device at least weekly during hoist
						use to ensure suitable operation and safe condition.
(2) Before hoisting personnel or material,
						the operator shall perform a test run of any cage or skip whenever it has been
						out of service for one complete shift, and whenever the assembly or components
						have been repaired or adjusted.
(3)
						An employee shall not ride on a material hoist, unless the hoist is in
						compliance with the requirements of
						R
						408.41478(1).
(4) Before maintenance, repairs, or other
						work is commenced in the shaft that is served by a hoist, the hoist operator
						shall be informed of the maintenance, repairs, or other work and given suitable
						instructions. A sign warning that work is being done in the shaft shall be
						installed at the shaft collar, at the operators station, and at each
						underground landing.
(5) Employees
						who are at the bottom of an excavated shaft shall be protected from the
						movement of equipment, tools, or materials overhead or the shaft shall be
						vacated during the operations that may be hazardous to persons below.
(6) If an employee is raised or lowered in a
						shaft, then all other hoisting operations in the shaft shall be stopped until
						the employee has disembarked at the bottom or top of the shaft.
(7) When a stationary hoist is being used,
						the drum-operating lever shall be of a type that returns automatically to the
						"stop" position when the operators hand is removed, unless, as a substitute,
						the throttle that controls the drum speed automatically stops the drum and
						slows the engine to idling speed when the throttle is released.
(8) Only wire rope shall be used for hoisting
						and it shall be properly secured at both the drum and cage or skip ends. When
						the hoist is in use, not less than 2 full turns shall remain on the
						conventional drum hoist to protect the end that fastens at the drum from an
						overload.
(9) The connection
						between the hoisting rope and the cage or skip shall be of a type to prevent
						the cage from spinning.
(10) All
						hoists shall be equipped with a landing level indicator at the operators
						station. Marking the hoist rope does not satisfy this requirement.
(11) Limit switches shall be used only to
						limit travel of loads when operational controls malfunction and shall not be
						used as a substitute for other operational controls.
(12) A warning light, suitably located to
						warn employees at the shaft bottom and subsurface shaft entrances, shall flash
						if a load is above the shaft bottom or subsurface entrances or if the load is
						being moved in the shaft. This subrule does not apply to fully enclosed
						hoistways.
(13) If a hoistway is
						not fully enclosed and employees are at the shaft bottom, then conveyances or
						equipment shall be stopped not less than 15 feet above the bottom of the shaft
						and held there until the signalperson at the bottom of the shaft directs the
						operator to continue lowering the load, except that the load may be lowered
						without stopping if the load or conveyance is within full view of a bottom
						signalperson who is in constant voice communication with the
						operator.
(14) Cage, skips, and
						load connections to the hoist rope shall be made so that the force of the hoist
						pull, vibration, misalignment, release of lift force, or impact will not
						disengage the connection. Moused or latched open-throat hooks do not meet this
						requirement.
(15) When using wire
						rope wedge sockets, means shall be provided to prevent wedge escapement and to
						ensure that the wedge is properly seated.
(16) Hoists shall be designed so that the
						load hoist-drum is powered in both directions of rotation and so that the
						brakes are automatically applied upon power release or failure.
(17) When a hoist is used for both personnel
						hoisting and material hoisting, the load and speed ratings for personnel and
						for materials shall be assigned to the equipment.
(18) Employees shall not ride on top of any
						cage, skip, or bucket, except when necessary to perform inspection or
						maintenance of the hoisting system, in which case they shall be protected by a
						body belt/harness fall prevention system.
(19) Material, tools, and supplies being
						raised or lowered, whether within a cage or otherwise, shall be secured or
						stacked in a manner to prevent the load from shifting, snagging, or falling
						into the shaft.
(20) Any connection
						between the hoisting rope and the cage or skip shall be compatible with the
						type of wire rope used for hoisting.
(21) Spin-type connections, where used, shall
						be maintained in a clean condition and protected from foreign matter that could
						affect their operation.