What minimum clearance radius around combustible materials before welding is required?

What minimum clearance radius around combustible materials before welding is required?

• A. 20 Feet
• B. 35 Feet
• C. 50 Feet
• D. 10 Feet

Answer: (B)

Heat and sparks from welding can ignite nearby combustibles, so you establish a safe buffer around the work area. This is done by removing combustibles within the zone or shielding them with noncombustible barriers, and by keeping liquids or gases away from the hotspot. The minimum clearance is defined by the applicable fire code or hot‑work permit and is meant to provide enough distance that sparks, slag, or radiant heat cannot reach and ignite materials. If clearing the space isn’t possible, you must use protective barriers and have a fire watch, following the permit and code requirements for additional controls. While the exact distance varies by jurisdiction, the idea is to maintain a generous safe radius around welding to prevent ignition.

Heat and sparks from welding can ignite nearby combustibles, so you establish a safe buffer around the work area. This is done by removing combustibles within the zone or shielding them with noncombustible barriers, and by keeping liquids or gases away from the hotspot. The minimum clearance is defined by the applicable fire code or hot‑work permit and is meant to provide enough distance that sparks, slag, or radiant heat cannot reach and ignite materials. If clearing the space isn’t possible, you must use protective barriers and have a fire watch, following the permit and code requirements for additional controls. While the exact distance varies by jurisdiction, the idea is to maintain a generous safe radius around welding to prevent ignition.