Additional support may be provided by vertical pickups. Chimney hoist means a multi-point adjustable suspension scaffold used to provide access to work inside chimneys. Cleat means a structural block used at the end of a platform to prevent the platform from slipping off its supports. Cleats are also used to provide footing on sloped surfaces such as crawling boards. Competent person means one who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them.
Coupler means a device for locking together the tubes of a tube and coupler scaffold.
Equivalent means alternative designs, materials or methods to protect against a hazard which the employer can demonstrate will provide an equal or greater degree of safety for employees than the methods, materials or designs specified in the standard. Exposed power lines means electrical power lines which are accessible to employees and which are not shielded from contact. Such lines do not include extension cords or power tool cords. Eye or Eye splice means a loop with or without a thimble at the end of a wire rope. Failure means load refusal, breakage, or separation of component parts.