Pipeline pressure testing issues in organic heat carrier boiler rooms
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The pipeline construction acceptance specifications and GB20801 Industrial Pipelines – Code for Design specify that a leakage test should be conducted after a pressure test, but the TSG G001 Code for Safety Inspection of Boilers requires that a leakage test be carried out first for heat transfer oil pipelines, followed by a pressure test. So, which standard should be followed for the pipeline inspection in organic heat carrier boiler rooms?
There was a misunderstanding. It is not to conduct a gas-tightness test first and then a pressure test. In organic carrier boilers, a gas-tightness test must be conducted first only when a hydraulic test is to be carried out using an organic carrier, in order to prevent significant leaks of the organic carrier during the hydraulic test and avoid resulting losses. If a water pressure test is used, this requirement does not apply.
Yes, but for industrial pipelines, it isn’t specified that a gas-tightness test should be conducted after a hydrostatic test; rather, it says that a gas-tightness test should be done after a pressure test, and this has nothing to do with that type of pressure test.
According to the construction acceptance specifications, no matter what type of pressure test is conducted, a leak tightness test can only be carried out after it has been successful
Pressure testing includes hydraulic and pneumatic testing, with water pressure being a type of hydraulic testing. Only when conducting a hydraulic test using a hot organic carrier (such as heat transfer oil) is it required to perform a gas-tightness test first. The purpose of the airtightness test is to check the sealing performance of the system ； Pressure testing is used to examine welds, primarily to assess their strength and welding quality.
I have a question: can’t these two experiments be done together? It seems like they can be combined