Section 296-155-55400 - Use boatswain's chairs as a last resort(1) You must only use boatswain's chairs when it is not possible to accomplish the task in a less hazardous way.(2) Follow all applicable requirements in this part for the use of boatswain chairs.(3) The chair must be capable of supporting its own weight and at least 5 times the maximum intended load.(4) Boatswain's chair tackle must consist of correct size ball bearings or bushed blocks containing safety hooks and properly "eye-spliced" minimum 5/8 inch (1.6 cm) diameter first-grade manila rope, or other rope which will satisfy the criteria (e.g., strength and durability) of manila rope.(5) Boatswain's chair seat slings must be a minimum of 5/8 inch (1.6 cm) diameter fiber, synthetic, or other rope which will satisfy the criteria (e.g., strength, slip resistance, durability, etc.) of first-grade manila rope.(6) Boatswain's chair seat slings must be reeved through 4 corner holes in the seat; must cross each other on the underside of the seat; and must be rigged so as to prevent slippage which could cause an out-of-level condition.(7) Hooks on headache ball assemblies, lower load blocks, or other attachment assemblies must be of a type that can be closed and locked, eliminating the hook throat opening. Alternatively, an alloy anchor type shackle with a bolt, nut and retaining pin may be used.Wash. Admin. Code § 296-155-55400
Amended by WSR 16-09-085, Filed 4/19/2016, effective 5/20/2016Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.440, 49.17.060, and 29 C.F.R. 1926, Subpart CC. 12-01-086, § 296-155-55400, filed 12/20/11, effective 2/1/12.