USCG Exam PracticeMaintenance, machine tools, drawings, and tables
Under 46 CFR §58.30-15, which material specification standard governs the selection of tubing and pipe materials for hydraulic and pneumatic systems on inspected vessels, and what additional physical requirement must all such materials satisfy?
- A. Materials must conform to ASME B31.1 and be rated for the maximum allowable working pressure only
- ✓ Materials must be selected from table 1 to §56.60-1 or table 1 to §56.60-2, or from Section I or VIII of the ASME BPVC, and must remain ductile at the lowest operating temperatureCorrect
- C. Materials must conform to ABS Marine Vessel Rules Part 4 and be hydrostatically tested at 1.5 times working pressure
- D. Materials must be selected from ASTM F1155 and must be rated for both the highest and lowest operating temperatures
Why B is correct
46 CFR §58.30-15(b) requires that tubing, pipes, valves, flanges, and fittings be selected from table 1 to §56.60-1 or table 1 to §56.60-2, or from the material specifications of Section I or Section VIII of the ASME BPVC. The regulation further requires that all tubing and pipe materials must be of such chemical and physical properties as to remain ductile at the lowest operating temperature.
Cited:46 CFR §58.30-15