🔍 Key Concepts

• IMO Class 1 hazardous cargo characteristics (explosives and their behavior in fire) • Difference between cooling, smothering, and chemical inhibition in firefighting • Risks of confining heat and pressure when dealing with explosive materials

💭 Think About

• Ask yourself what happens to explosive materials if they are heated but not allowed to vent gases or pressure. • Consider which firefighting agent can safely reduce temperature and prevent detonation risk rather than trapping heat. • Think about standard cargo fire plans and IMDG Code guidance: what is generally recommended for explosives in a shipboard fire scenario?

✅ Before You Answer

• Verify what Class 1 (explosives) typically require in terms of cooling vs. smothering. • Check which option could increase internal pressure and risk of explosion by sealing the space. • Eliminate any methods that would trap heat or shock the cargo rather than safely dispersing heat.