MCC-NH Gas Fitters Practice Exam

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Prepare for the MCC-NH Gas Fitters Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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What is the maximum design operating pressure for piping located inside a building?

2 PSIg
5 PSIg
10 PSIg
15 PSIg

The correct answer is: 5 PSIg

The maximum design operating pressure for piping located inside a building is indeed set at 5 PSIg. This standard is in place to ensure safety and reliability in the gas distribution systems within residential and commercial properties. Operating at this pressure allows for the effective delivery of gas without exceeding safety limits that could lead to hazards such as leaks or failures of the piping system. The pressure must remain within this range to comply with building codes and industry standards, such as those outlined by the National Fuel Gas Code. The other pressures mentioned, while they are also used in different applications or specific contexts, exceed the generally accepted maximum for indoor piping systems, which contributes to the risk of potential safety issues. Thus, 5 PSIg serves as a controlled limit designed to enhance safety and performance for gas piping installed within building interiors.