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1319.5 Initial Pressure Tests - Medical Gas and Medical Vacuum Systems
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Each section of the piping in medical gas and medical vacuum systems shall be pressure tested by a party qualified in accordance with Section 1306.1, and using oil-free, dry nitrogen NF. [NFPA 99:5.1.12.2.3.1, 5.3.6.23.2.3(A)]
Initial pressure tests shall be conducted in accordance with the following:
Initial pressure tests shall be conducted in accordance with the following:
- After blow down of the distribution piping.
- After installation of station outlet and inlet rough-in assemblies. Test caps shall be permitted to be used.
- Prior to the installation of components of the distribution piping system that would be damaged by the test pressure. [NFPA 99:5.1.12.2.3.2, 5.3.6.23.2.3(B)]
The source shutoff valve for the piping system shall remain closed during tests. [NFPA 99:5.1.12.2.3.3, 5.3.6.23 .2.3(C)]
The test pressure for pressure medical gases and medical vacuum
systems shall be one and one-half times the system working pressure, and not less than a gauge pressure of 150 psi (10 34 kPa). [NFPA 99:5.1.12.2.3.4, 5.3.6.23.2.3(D)] The test pressure shall be maintained until each joint has been examined for leakage by means of a leak detectant that is safe for use with oxygen and does not contain ammonia. [NFPA 99:5.1.12.2.3 .5, 5.3.6.23.2.3(E)]
Leaks shall be located, repaired (where permitted), replaced (where required), and retested. [NFPA 99:5.1.12.2.3.6, 5.3.6.23.2.3(F)]
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