Guardrails may be used to safeguard:
• Cranks and connecting rods.
• Tail rods and extension piston rods.
• Horizontal belts in a power generating room.
• Clutches, cutoff couplings, or clutch pulleys in an engine room occupied only by an attendant.
• Power transmission parts on a runway used only for oiling, maintenance, running adjustment, or repair work.
• Make sure top rails are:
– Strong enough to withstand a force of at least two hundred pounds.
– Between thirty-nine and forty-five inches above the floor, platform, runway, or ramp.
• Make sure guardrails have an intermediate rail (midrail) installed approximately halfway between the top rail and the floor, platform, runway, or ramp.
• Make sure rails do not extend beyond the end posts of the guardrail and create a projection hazard.
• Make sure toe boards, if required by this chapter to safeguard a machinery hazard, are:
– At least four inches high.
– Securely fastened in place with no more than one-fourth inch between the bottom of the toe board and the floor, platform, runway, or ramp.
– Made of substantial material that is either solid or that has openings in the material no larger than one inch.
[Statutory Authority: RCW 49.17.010
, 49.17.040, 49.17.050, and 49.17.060. WSR 04-14-028, § 296-806-20058, filed 6/29/04, effective 1/1/05.]