USCG Exam PracticeEngine-room safety and hazardous materials
Under 46 CFR §28.380, where insulation is used in a machinery space or paint locker, what additional requirement applies?
- A. The insulation must be noncombustible in all cases
- ✓ A vapor barrier covering the insulation must be providedCorrect
- C. The insulation must be tested and listed by an independent laboratory
- D. The insulation must be separated from all wiring by a minimum air gap
Why B is correct
46 CFR §28.380(f) requires that where insulation of any type is used in spaces where flammable and combustible liquids or vapors are present — such as machinery spaces and paint lockers — a vapor barrier covering the insulation must be provided. This applies regardless of whether the insulation itself is combustible or noncombustible.
Cited:46 CFR §28.380