USCG Exam PracticeEngine-room safety and hazardous materials
Under 46 CFR §182.430, when a wet exhaust pipe must pass through a watertight bulkhead, which of the following statements is correct?
- A. Noncombustible packing must be used in the bulkhead penetration gland regardless of pipe material
- ✓ The watertight integrity of the bulkhead must be maintained, and a fiberglass wet exhaust pipe may be fiberglassed to a fiberglass reinforced plastic bulkhead if suitable arrangements relieve expansion stressesCorrect
- C. The pipe must be welded to a steel bulkhead in all cases
- D. A flexible metallic hose section must be installed on each side of the bulkhead penetration
Why B is correct
46 CFR §182.430(f) requires that watertight integrity be maintained at bulkhead penetrations, and specifically permits a fiberglass wet exhaust pipe to be fiberglassed to a fiberglass reinforced plastic bulkhead provided suitable arrangements relieve expansion stresses. Noncombustible packing in penetration glands applies to dry exhaust systems, not wet.
Cited:46 CFR §182.430