Electrical guarding for cranes

(1) Electrical bridge and trolley conductors for cranes shall be located or guarded to prevent accidental contact by persons. Level turntables. (2) Mobile cranes shall be operated with their turn-tables level, except as permitted by the manufacturer. air powered (3) Air-operated cranes, hoists and winches shall be supplied with air at sufficient pressure to ensure safe operation and there shall be a suitable device to prevent inadvertent disconnection of the air supply. (4) When required by the Inspector, a suitable non- destructive test shall be made on all load carrying components of the crane or lifting device. Non-destructive (5) Any modifications or repair of a structural element or component of a crane, derrick, or hoist shall be approved by the original manufacturer or carried out under the direction of a professional engineer who shall certify the work. Repair standards. (6) The manufacturer’s manual shall be available at the place where the equipment is used and the manual shall show, in English, the approved method of erection, dismantling, operation, adjustment and maintenance of the component parts and the assembled equipment. Manual available on site. (7) A permanent, clearly visible and legible sign shall be affixed to each crane, derrick and hoist showing the safe working load which shall not be exceeded. Safe working load. 116 (8) Every crane, derrick and similar hoisting equipment with a boom that can be moved in a vertical plane shall be provided with a device to indicate the angle of the boom or the radius of the lift which should be clearly visible from the operator’s location. Boom angle indicator. identification. (9) Each control for a crane, derrick or hoist shall be clearly marked to show its function. (10) Hoisting-equipment operators shall be protected against weather, falling objects and overhead hazards. Qualified operators, hand (11) The manager shall ensure that hoisting equipment is operated only by qualified persons and that a standard system of hand signals is used by the operator and any other persons involved in the lifting operation. Pre-operation (12) The operator of any lifting device shall, at the start of each shift, test the limit switches, brakes, circuit breakers and all control and safety devices and the operator shall not operate the unit if any of these are defective.