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// CODE SNIPPET

1324.5.4 Standing Pressure Tests — For Positive Pressure Medical Gas Piping Systems

2021 Oregon Plumbing Specialty Code > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1324.0 Performance Criteria and Testing Category 1 (Gases, Medical Surgical Vacuum) > 1324.5 Initial Pressure Tests — Medical Gas and Vacuum Systems > 1324.5.4 Standing Pressure Tests — For Positive Pressure Medical Gas Piping Systems
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After successful completion of the initial pressure tests under Section 1324.5 through Section 1324.5.1.2, medical gas distribution piping shall be subjected to a standing pressure test. [NFPA 99:5.1.12.2.6]

1324.5.4.1 Time Frame for Testing

Tests shall be conducted after the final installation of station outlet valve bodies, faceplates, and other distribution system components (e.g. pressure alarm devices, pressure indicators, line pressure relief valves, manufactured assemblies, hose). [NFPA 99:5.1.12.2.6.1]

1324.5.4.2 Source Valve

The source valve shall be closed during this test. [NFPA 99:5.1.12.2.6.2]

1324.5.4.3 Length of Testing

The piping systems shall be subjected to a 24 hour standing pressure test using oil-free, dry nitrogen NF. [NFPA 99:5.1.12.2.6.3]

1324.5.4.4 Test Pressure

Test pressures shall be 20 percent above the normal system operating line pressure. [NFPA 99:5.1.12.2.6.4]

1324.5.4.5 Conclusion of Test

The leakage over the 24 hour test shall not exceed 0.5 percent of the starting pressure [e.g., 0.3 psi (2 kPa) starting at 60 psig (414 kPa), 0.125 inch (3.2 mm) HgV starting at 25 inches (635 mm) HgV] except that attributed to specific changes of ambient temperature. [NFPA 99:5.1.12.2.6.5]

1324.5.4.6 Leaks

Leaks, if any, shall be located, repaired (if permitted) or replaced (if required), and retested. [NFPA 99:5.1.12.2.6.6]

1324.5.4.7 Proof of Testing

The 24 hour standing pressure test of the positive pressure system shall be witnessed by an ASSE 6020 inspector, an ASSE 6030 verifier, or the Authority Having Jurisdiction or its designee. A form indicating that this test has been performed and witnessed shall be provided to the verifier at the start of the tests required in Section 1324.5.7 through Section 1324.5.11. [NFPA 99:5.1.12.2.6.7]

Related Code Sections


1324.5.4 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Standing Pressure Tests — For Positive Pressure Medical Gas Piping Systems
After successful completion of the initial pressure tests under Section 1324.5 through Section 1324.5.1.2, medical gas distribution piping shall ...
2021 Oregon Plumbing Specialty Code > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1324.0 Performance Criteria and Testing Category 1 (Gases, Medical Surgical Vacuum) > 1324.5 Initial Pressure Tests — Medical Gas and Vacuum Systems > 1324.5.4 Standing Pressure Tests — For Positive Pressure Medical Gas Piping Systems
1324.5.4.2 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Source Valve
The source valve shall be closed during this test. [NFPA 99:5.1.12.2.6.2] ...
2021 Oregon Plumbing Specialty Code > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1324.0 Performance Criteria and Testing Category 1 (Gases, Medical Surgical Vacuum) > 1324.5 Initial Pressure Tests — Medical Gas and Vacuum Systems > 1324.5.4 Standing Pressure Tests — For Positive Pressure Medical Gas Piping Systems > 1324.5.4.2 Source Valve
1324.5.4.6 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Leaks
Leaks, if any, shall be located, repaired (if permitted) or replaced (if required), and retested. [NFPA 99:5.1.12.2.6.6 ...
2021 Oregon Plumbing Specialty Code > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1324.0 Performance Criteria and Testing Category 1 (Gases, Medical Surgical Vacuum) > 1324.5 Initial Pressure Tests — Medical Gas and Vacuum Systems > 1324.5.4 Standing Pressure Tests — For Positive Pressure Medical Gas Piping Systems > 1324.5.4.6 Leaks
1324.0 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Performance Criteria and Testing Category 1 (Gases, Medical Surgical Vacuum)
] Each section of the piping in medical gas and vacuum systems shall be pressure tested. Initial pressure tests shall be conducted as follows ...
2021 Oregon Plumbing Specialty Code > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1324.0 Performance Criteria and Testing Category 1 (Gases, Medical Surgical Vacuum)
1327.0 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Dental Gas and Vacuum Systems
] Each section of the piping in positive-pressure gas systems and copper vacuum systems ...
2021 Oregon Plumbing Specialty Code > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1327.0 Dental Gas and Vacuum Systems
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