Which material is an example of a combustible material that requires clearance before welding?

Which material is an example of a combustible material that requires clearance before welding?

• A. Glass
• B. Concrete
• C. Paper Clippings
• D. Steel Pipe

Answer: (C)

Heat from welding can ignite materials that can burn. Paper clippings are combustible and can catch fire from sparks, heat, or hot slag, so they must be cleared away or shielded before welding. Glass, concrete, and steel pipe are noncombustible and don’t pose the same ignition risk from welding heat, so they don’t require the same clearance. The safety goal is to keep combustible materials out of the hot-work zone to prevent fires, which is why paper clippings are the example that needs clearance.

Heat from welding can ignite materials that can burn. Paper clippings are combustible and can catch fire from sparks, heat, or hot slag, so they must be cleared away or shielded before welding. Glass, concrete, and steel pipe are noncombustible and don’t pose the same ignition risk from welding heat, so they don’t require the same clearance. The safety goal is to keep combustible materials out of the hot-work zone to prevent fires, which is why paper clippings are the example that needs clearance.