🔍 Key Concepts

• hot work safety requirements on vessels (welding, cutting, burning) • risk of flammable vapors in tanks and confined spaces • typical Coast Guard/OSHA practice: multiple layers of protection, not just one

💭 Think About

• Ask yourself: when doing welding or burning aboard a vessel, is it usually enough to have just one safety measure, or are several different types of precautions normally required? • Look at each choice and decide: is this something that would reasonably be part of a standard hot work checklist on a ship? • Consider whether any option listed would ever be allowed to be ignored under normal safe marine practice.

✅ Before You Answer

• For each option, check whether it addresses a different hazard: fumes/oxygen levels, nearby combustibles, fuel tank integrity. • Verify which answers are always required (not just sometimes) during hot work aboard a vessel. • Make sure you are not picking an answer that leaves out any clearly necessary basic safety precaution.