What are the hot work requirements?

• A. Must be conducted at least 100 ft from all explosive and flammable cargo and 50 ft from all other hazardous material.
• B. Must be conducted at least 50 ft from all cargo.
• C. Must be conducted only during daytime hours.
• D. No special distance requirements.

Answer: (A)

Hot work creates heat, sparks, and molten metal that can ignite nearby materials. The most important safety rule is to maintain a clear separation between the work and any hazardous materials so ignition sources can’t reach them. The required distances are 100 feet from all explosive and flammable cargo and 50 feet from all other hazardous materials. This spacing gives a measurable buffer that reduces the chance that sparks or heat will start a fire in nearby hazards. In practice, you’d also need a hot work permit, a fire watch, and proper controls to remove or shield combustibles, but the key safety measure that makes the procedure enforceable and effective is keeping that defined distance from hazardous materials.