Service Leak Test

[PipingMaterialGirl]

The design conditions of a line falls under the Category D service, however operating pressure is 0 barg at 31 degC. Is there a leak testing or hydrotest required? If none, then what part of the code in ASME B31.3 could support that this has no testing requirement. Thank you!

 

[racookpe1978]

OK, so it has "0" pressure when in service.

What are it's actual service conditions, and do you care if the line leaks - either "into the pipe" when under a vacuum, or "out of the pipe" when under pressure? How will you know the pipe is build correctly if you do not test the pipe under nominal pressure with a test fluid under controlled conditions PRIOR to actual operation?

 

[PipingMaterialGirl]

So for this case, hydrotest will be applied instead of service leak test?