Final answer:
For welded gas piping systems of 200 feet or more with a working pressure of 10 psig, the minimum test duration is 60 minutes.
Step-by-step explanation:
In accordance with the regulations, for welded gas piping systems of 200 feet or more with a working pressure of 10 psig, the minimum test duration shall be 60 minutes. In compliance with regulations governing safety standards, it is specified that for welded gas piping systems spanning 200 feet or more and possessing a working pressure of 10 psig, the minimum duration for testing shall be 60 minutes. This requirement underscores the significance of ensuring the integrity and reliability of gas piping systems through a thorough and adequately tim-ed test-ing process, aligning with safety protocols and industry regulations.