USCG Exam PracticeAuxiliary machinery and shipboard systems
Under 46 CFR, in a multiple boiler installation, each boiler's main, auxiliary, and desuperheater steam lines must be fitted with how many valves, and of what types?
- A. One stop valve and one relief valve
- B. Two stop valves arranged in series
- ✓ One stop valve and one stop check valveCorrect
- D. One stop check valve and one relief valve
Why C is correct
46 CFR §56.50-15(d) requires that in multiple boiler installations, each boiler's main, auxiliary, and desuperheater steam lines must be fitted with two valves: one a stop valve and one a stop check valve. Relief valves and duplicate stop valves are not the prescribed combination for this application.
Cited:46 CFR §56.50-15