Question 273General Subjects - 1st Asst/Chief
70% to passA periodic hydrostatic test is being performed on a main steam line between the boiler drum and the throttle valve which has a maximum allowable working pressure of 960 psig. In accordance with 46 CFR regulations pertaining to periodic tests and inspections as related to piping systems, what is the required hydrostatic test pressure for this procedure?
A1056 psig
B1200 psig
C1440 psig
D1920 psig
AI Explanation
The correct answer is B) 1200 psig. According to 46 CFR 56.97-3, the required hydrostatic test pressure for a piping system with a maximum allowable working pressure of 960 psig is 1.25 times the maximum allowable working pressure, which equals 1200 psig. This is the minimum test pressure required to ensure the integrity of the piping system. The other options are incorrect because: A) 1056 psig is less than the required 1.25 times the maximum allowable working pressure. C) 1440 psig is more than the required test pressure. D) 1920 psig is significantly higher than the required test pressure.
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