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Welded gas piping systems of 200 feet or more having a working pressure of 10 psig: What is the minimum test pressure?

a) 5 psig
b) 10 psig
c) 15 psig
d) 20 psig

Answer :

Final answer:

The minimum test pressure for welded gas piping systems with a working pressure of 10 psig is usually equal to or greater than the working pressure, with 10 psig being a logical minimal choice according to common practice. However, the precise requirement would be determined by the applicable code or standard.

Explanation:

For welded gas piping systems of 200 feet or more with a working pressure of 10 psig, the minimum test pressure varies based on the applicable code or standard (for example, ASME B31.4 or relevant local building codes). However, you might reasonably assume the minimum test pressure to be at least equal to the system's working pressure or a specified percentage above it to verify the integrity of the welds and connections under the worst operating conditions. In absence of specific code references in the question, a ​professional​ assumption could be that the test pressure should at least meet or exceed the working pressure (10 psig), making selection (b) 10 psig a ​minimal logical​ choice. To provide an accurate answer, you would need to refer to the specific code or standard that applies to your situation. It is worth noting that in many cases, test pressures are typically set at a higher value than the operating pressure to ensure the system's ​safety​ and integrity.

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