4th Steam Practice Test

What is the minimum pressure test for medical gas piping?

100 psi 150 psi 200 psi 250 psi

Correct Answer:

150 psi

Explanation:

Testing medical gas piping relies on a hydrostatic test that pushes the system beyond its normal operating pressure to reveal leaks or weak joints. The minimum test pressure is set at 1.5 times the maximum operating pressure of the system. For many medical gas installations, that results in 150 psi as the minimum test pressure. This provides a safe margin—high enough to uncover defects, but not so high as to risk damage to the piping or components. A test pressure of 100 psi wouldn’t give sufficient margin, while 200 or 250 psi would go beyond the standard minimum.

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