Ignition Source Control During Active Operations

• Flammable vapors igniting near hot work or equipment
• Fire spread caused by poor housekeeping or improper material storage
• Workers failing to recognize ignition sources during operations

Ignition source control during active operations is critical in construction, utility work, industrial maintenance, fleet operations, municipal facilities, and field environments. Many workplace fires occur when workers fail to recognize how easily sparks, heat, or electrical equipment can ignite nearby flammable materials or vapors.

Different operations create different ignition hazards. Grinding and welding operations produce sparks and hot slag, fueling activities release flammable vapors, battery charging systems may generate explosive gases, and temporary heaters can ignite combustible materials stored nearby.

Poor housekeeping significantly increases fire risk during operations. Oily rags, cardboard, sawdust, vegetation, fuel containers, aerosol products, and combustible debris allow small ignition events to spread quickly into larger fires.

Workers should identify ignition sources before beginning work and evaluate surrounding conditions carefully. Cutting, grinding, welding, or heating operations should never begin near unprotected flammables, fuel storage, gas cylinders, or vapor-producing chemicals.

Temporary operations often create additional fire hazards. Extension cords, overloaded circuits, portable heaters, charging stations, generators, and temporary lighting may overheat or ignite nearby materials if not managed properly.

Fire extinguishers, spill kits, and emergency shutdown procedures should remain accessible and understood by all crews. Workers should also understand evacuation routes and reporting procedures before high-risk operations begin.

Strong fire prevention depends on planning, housekeeping, equipment inspection, and hazard awareness throughout the workday instead of only during emergency situations.

• Identify ignition sources before beginning work.
• Keep combustible materials away from sparks and heat.
• Maintain good housekeeping throughout operations.
• Inspect temporary electrical and heating equipment regularly.
• Know emergency shutdown and fire extinguisher locations.

• What ignition sources exist during today’s operations?
• Are combustible materials stored safely away from hot work areas?
• Could temporary equipment create overheating or fire hazards?
• Do crews understand emergency response procedures?