There shall be no smoking, open lights, or fire within how many feet of explosives handling area?

• A. 50 ft
• B. 10 ft
• C. 25 ft
• D. 100 ft

Answer: (A)

An exclusion zone around explosives handling areas is required to prevent ignition sources from reaching the area. Smoking, open lights, or any fire can ignite vapors or dust, so a safe radius is kept clear of such sources. The commonly applied distance is 50 feet, which provides a practical safety margin against accidental sparks or vapors that might travel toward the handling area due to wind or movement. Smaller distances like 10 or 25 feet don’t give enough buffer for potential vapor dispersion or human error, while a much larger distance would be unnecessarily restrictive for regular operations. Therefore, 50 feet is the correct standard for this situation.