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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Can PVC be used for underground gas piping?

Yes, it is recommended
Yes, but with restrictions
No, it cannot be used
Only for small installations

The correct answer is: No, it cannot be used

PVC cannot be used for underground gas piping due to its inability to withstand the high temperatures and pressures associated with gas distribution. Gas piping systems require materials that can safely handle these conditions without degrading or becoming a hazard over time. PVC is generally not suitable because it can become brittle or soften under heat, leading to potential leaks and safety risks. Additionally, UV exposure and other environmental factors can further compromise PVC, making it unreliable for underground applications where it is susceptible to external pressures and soil conditions. The materials typically acceptable for underground gas piping include polyethylene (PE), which is specifically designed for that purpose and can handle gas safely. This decision is rooted in safety regulations and industry standards, which prioritize the safe transport of gas and the prevention of leaks that could lead to hazardous situations.