Issues regarding pipeline strength testing and leakage testing
Thread Content
There is currently a pressure pipeline made of GC1, with chloromethane as the medium, and a design pressure of 1.8 MPa. 1. According to GB50235, pneumatic testing can be used for the strength testing of pipes with a pressure of less than or equal to 0.6 MPa. 2. According to SH3501, the pressure strength test pressure shall not exceed 1.6 MPa. 3. The medium is flammable and highly toxic; a leakage test shall be conducted in accordance with SH3501. The test pressure is the design pressure of the pipeline, namely 1.8 MPa. I would appreciate some advice from the experts: for items 2 and 3, doesn’t this pressure value create a contradiction?
Many standards are conflicting; it is recommended to follow the strict ones!
One is the strength test. . . . One is the leakage test. . . . It’s different. . .
Strength tests are different from leakage tests
The pressure strength test and the leakage test use similar testing methods
The pressure strength test and the leakage test use similar testing methods
Which standard should the reference design follow? It is recommended to use water pressure plus airtightness! Air pressure must take safety into account
Pneumatic testing is a strength test; usually, hydraulic testing is used for strength tests, unless the pipeline cannot be exposed to liquids； The leak test is a airtightness test, and the pressure used in this test is equal to the design pressure