Regarding the pneumatic pressure test of IG541 gas fire extinguishing pipelines
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This post was last edited by wangzhanzhuce on 2018-9-20 at 14:59. Dear experts: According to the GB50263-2007 Code for Construction and Acceptance of Gas Fire Extinguishing Systems, the IG541 gas fire extinguishing pipelines are required to undergo a water pressure test at 13 MPa and a pneumatic pressure test at 10.5 MPa. However, conducting pneumatic pressure tests is very dangerous; is it possible to eliminate this requirement? Are there any alternative methods?
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Come on, expert – are there any other methods?:
Study the standards carefully*; that requirement regarding pressure strength is one that applies only when a pressure strength test is necessary, and it is not something that needs to be done as part of a hydrostatic strength test. If you have conducted a hydrostatic strength test, then there is no need to conduct a pneumatic strength test.
Hello expert: It’s not necessary to test the air pressure strength, but air tightness still needs to be checked. The pressure should be 2/3 of the water pressure strength, which is 8.7 MPa； Can air tightness be replaced by some other method?
The airtightness test cannot be canceled. You can skip the hydrostatic strength test and conduct a pneumatic strength test, with the pressure reduced to the level required for the airtightness test. Do it once and it’s done.