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 a single shutoff valve separate gas in one section and test medium in another?

Yes, it's standard practice
No, separate shutoff valves are required
Only if the valve is rated for both mediums
It depends on the type of gas being used

The correct answer is: No, separate shutoff valves are required

A single shutoff valve cannot effectively separate gas in one section and test medium in another due to safety and regulatory requirements. Each medium—be it gas or a testing fluid—has different characteristics and potential hazards. If a single valve is used for both, there is a risk of cross-contamination, which could pose significant safety risks, such as leaks or pressure issues. Regulations typically dictate that separate shutoff valves must be installed to maintain clear delineation between the gas and testing mediums. This ensures that if either system needs to be serviced or tested, it can be accomplished safely and without risk to personnel or the integrity of the gas delivery system. Using separate shutoff valves also complies with industry standards intended to ensure safety and reliability in gas systems.