[MW:7407] difference between tightening test and tightness test in piping work.

Dear Friends,

 

We have a situation where we saying the tightening test is a process of bolt tightening only, but the tightness test is the activity to be performed after completion of re-instatement of piping work (after flushing cleaning and before commissioning) by putting the medium (air, water etc.) inside the piping work and perform the leak test for all the mechanical joints.

 

Any advice will be appreciated and if have some supporting documents/code to support above mention understandings.

 

Thanks

 

With regards.

 

DK.

 

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