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Washington Administrative Code (Last Updated: November 23, 2016) |
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Title 296. Labor and Industries, Department of |
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Chapter 296-874. Scaffolds. |
Section 296-874-30028. Take precautions while welding.
Latest version.
- You must do the following to protect employees while welding on suspended scaffolds:(1) Use an insulated thimble to attach each suspension wire rope to its hanging support, such as a cornice hook or outrigger;(2) Insulate excess suspension wire rope and any additional independent lines to prevent grounding;(3) Cover the wire suspension rope with insulating material that extends at least four feet (1.2 m) above the hoist;(4) Make sure any tail line that extends below the hoist is:(a) Insulated to prevent contact with the platform; and(b) Guided or retained so it does not become grounded.(5) Cover each hoist with an insulated protective cover;(6) Connect the scaffold to the structure using a grounding conductor that:(a) Is at least the size of the welding process work lead; and(b) Is not in series with the welding process or the work piece.(7) Shut off the welding machine if the scaffold grounding lead becomes disconnected;(8) Make sure an active welding rod or an uninsulated welding lead is not allowed to contact the:(a) Scaffold; or(b) Scaffold suspension system.