NM CID MM-2 Practice Questions - New Mexico CID MM-2 Natural Gas Fitting Examination Exam

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For a new interior natural-gas piping system that is not welded and will not operate above 14 inches water column, what minimum pressure test does UMC 1313.3 / UPC 1213.3 require?

An air, carbon dioxide, or nitrogen test of not less than 10 psi held not less than 15 minutes with no perceptible drop A soap-bubble check at meter pressure only A 60 psi test held 30 minutes on every residential branch A natural-gas test at operating pressure for 5 minutes

Correct Answer:

An air, carbon dioxide, or nitrogen test of not less than 10 psi held not less than 15 minutes with no perceptible drop

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