R 408.15734 Catheads.

Rule 5734. (1) A cathead on which a rope is manually operated shall have a rope guide to hold the onrunning rope in alignment with its normal running position against the inner flange. Clearance of the rope guide shall be a maximum of 3/8 inch from the cathead. (2) The fasteners for the guides and housing shall be secured against loosening by safety wires or other equivalent means. (3) Precautions shall be taken to prevent entanglement of other lines with a line in use on a cathead. (4) When a cathead is unattended, a rope or line shall not remain wrapped on or in contact with the cathead. (5) A qualified employee shall attend the draw works control when a manually operated cathead is in use. (6) A cathead shall be checked for grooves and rebuilt and turned when necessary to prevent fouling. Cathead groove depth shall not exceed 1/4 inch. (7) A headache post or guard shall be provided for protection of the employee at the draw works controls when the line is in close proximity to the operator during operation of a catline, jerkline, or spinning line. (8) An automatic cathead and its mechanism shall be maintained in safe working condition. (9) A splice shall not be allowed to contact the cathead friction surface, with the exception of endless rope properly spliced. (10) A catline shall not be used to raise or lower personnel.