USCG Exam PracticeEngine-room safety and hazardous materials
A vessel's dry exhaust pipe passes through a combustible bulkhead. Under 46 CFR §182.430, which combination of requirements applies to that installation?
- ✓ The pipe must be kept clear of and suitably insulated or shielded from combustible material, and must be supported by noncombustible hangers and blocksCorrect
- B. The pipe must be wrapped in Schedule 80 metallic lagging and welded to the bulkhead to maintain structural integrity
- C. Noncombustible packing must be used in the penetration gland and a flexible metallic hose section must be installed within 0.3 m of the bulkhead
- D. The pipe must be rerouted to avoid the combustible bulkhead entirely; no penetration of a combustible bulkhead is permitted
Why A is correct
46 CFR §182.430(g)(1) requires a dry exhaust pipe passing through a combustible bulkhead or partition to be kept clear of and suitably insulated or shielded from combustible material, and §182.430(g)(2) requires noncombustible hangers and blocks for support. The regulation does not prohibit penetration of combustible bulkheads, nor does it mandate welding or a mandatory flexible hose at that location.
Cited:46 CFR §182.430