R 408.10575 Hoisting machines.

Rule 575. (1) The raising and lowering of suspended or supported equipment shall be performed only by a hoisting machine. (2) Each hoisting machine shall be capable of arresting any overspeed descent of the load. (3) Each hoisting machine shall be powered only by air, electric, or hydraulic sources. (4) Each hoisting machine shall be capable of raising or lowering 125% of the rated load of the hoist. (5) Moving parts of a hoisting machine shall be enclosed or guarded in compliance with the provisions of General Industry Safety Standard Part 7 “Guards for Power Transmission," as referenced in R 408.10509. (6) Flammable liquids shall not be carried on the working platform. (7) Winding drums, traction drums, and sheaves and directional sheaves that are used in conjunction with hoisting machines shall be sized for the wire rope that is used. (8) Each winding drum shall be provided with a positive means of attaching the wire rope to the drum. The attachment shall be capable of developing not less than 4 times the rated load of the hoist. (9) Each hoisting machine shall be provided with a primary brake and at least 1 independent secondary brake, each of which shall be capable of stopping and holding not less than 125% of the lifting capacity of the hoist. (10) The primary brake shall be directly connected to the drivetrain of the hoisting machine and shall not be connected through belts, chains, clutches, or set screw-type devices. The brake shall automatically set when power to the prime mover is interrupted. (11) The secondary brake shall be an automatic emergency type of brake that, if actuated during each stopping cycle, shall not engage before the hoist is stopped by the primary brake and shall stop and hold the platform within a vertical distance of 24 inches (609.6 mm). (12) Any component of a hoisting machine that requires lubrication for its protection and proper functioning shall be provided with a means for that lubrication to be applied.