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Threaded gas piping systems of 200 feet or less having a working pressure of 10 psig, the minimum test pressure shall be:

A) 5 psig
B) 7 psig
C) 10 psig
D) 12 psig

Answer :

Final answer:

The minimum test pressure for a gas piping system of 200 feet or less with a working pressure of 10 psig is 12 psig, as it exceeds the operating pressure and ensures system integrity.

Explanation:

The correct answer is D) 12 psig. According to various codes and standards for pneumatic testing of piping, a general rule for the minimum test pressure is to use at least 1.5 times the operating pressure when testing gas piping systems. In this case, with an operating pressure of 10 pounds per square inch gauge (psig), the minimum test pressure for safety reasons would be 10 psig × 1.5 = 15 psig. However, since the accepted answer choices do not include 15 psig and the question specifies a minimum, the highest available option that exceeds the operating pressure is D) 12 psig. This value likely serves as a minimum standard for ensuring system integrity at the stated working pressure, though the actual required test pressure may be higher depending on the specific code or standard applied.

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