OHS Code

Published Date: July 01, 2009
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Part 37 Oil and Gas Wells

Section 771 Catheads

(1) An employer must ensure that workers do not use a rope-operated friction cathead on a drilling or service rig.

(2) A worker must not use a rope-operated friction cathead on a drilling or service rig.

(3) An employer must ensure that each automatic cathead has a separate control unless

(a) the cathead has dual purpose controls, and

(b) a locking device is installed to prevent one cathead from being engaged accidentally while another cathead is in operation.

(4) Despite subsections (1) and (2), a worker may use a rope-operated friction cathead for hoisting before January 1, 2005 if

(a) a cathead on which a rope is manually operated has a blunt, smooth-edged rope divider,

(b) the clearance between a rope divider and the friction surface of a cathead is not more than 7 millimetres,

(c) every key seat and projecting key on a cathead is covered with a smooth thimble or plate,

(d) the clearance between the outer flange of a cathead and any substructure, guardrail or wall is at least 500 millimetres,

(e) a competent worker handles the drawworks control while a cathead is in use,

(f) the operating area of a manually operated cathead is kept clear at all times, and

(g) the portion of a rope or line that is not being used is coiled or spooled.

(5) A worker who operates a rope-operated friction cathead must not

(a) leave a rope or line wrapped around or in contact with an unattended cathead, or

(b) allow a splice to come in contact with the friction surface of the cathead.