USCG Exam PracticeHydraulics and pneumatics
Under 46 CFR §58.30-5, a pneumatic system with a maximum allowable working pressure exceeding 150 psi must be designed with which of the following?
- A. A fusible plug or bursting disc on each receiver
- ✓ A surge tank or other acceptable means of pulsation dampeningCorrect
- C. An intercooler between each compression stage
- D. A moisture separator on the compressor discharge
Why B is correct
46 CFR §58.30-5(c) specifically requires that pneumatic systems with a maximum allowable working pressure in excess of 150 psi be designed with a surge tank or other acceptable means of pulsation dampening. Fusible plugs, intercoolers, and moisture separators are all legitimate pneumatic system components but are not the requirement stated in §58.30-5(c) for systems above 150 psi.
Cited:46 CFR §58.30-5