What is one of the greatest threats to explosives?

• A. Water exposure
• B. Fire
• C. Physical impact
• D. Exposure to heat

Answer: (B)

Fire is the greatest threat because it provides a direct ignition source and sustained heat that can raise an explosive to its initiation temperature, causing rapid, uncontrolled energy release. A flame can spread, heat containers, and ignite solvents or other materials nearby, creating a cascading hazard that can lead to detonation. While exposure to heat or physical impacts can be dangerous, they don’t deliver the same immediate, escalating ignition risk as fire. Water exposure can cause corrosion or other issues, but it does not inherently produce the same ignition threat as a spreading fire.