OAR 437-007-0600: Inspection and General Requirements for Rigging

(1) A competent person must thoroughly inspect all: (a) Blocks, butt rigging, shackles and other rigging for damaged, cracked or worn parts, loose nuts and bolts, and the need for lubrication before they are used. (b) Wire rope (running lines), skylines, chokers, straps and guylines before they are used. (2) Repairs or replacements must be made before the blocks, butt rigging, shackles, other rigging, guylines, or straps are used. (3) Rigging and loads must not foul or saw against lines, straps, blocks, or other equipment when in use.