Testing of vessel
Testing of vessel
(OP)
I have a vessel tetsed at 75 bar which has an inbuilt coil.The coil has been tetsed at 15 bars.The vessel has(designed to Sev VIII Div 1- not certified)undergone a minor repair by welding(no alteration) at one of it's nozzle. If i pressure test the vessel at 75 bar, will it affect the coil's integrity? any other way to avoid pressure test the vessel?it has been 100% radiographed.Closure weld procedure did not follow during repair.





RE: Testing of vessel
If the vessel was designed to ASME VIII, then the coil has been designed to take 75 bar external pressure, even if it was tested for internal pressure of 15 bar. What makes you think that making a small repair on a nozzle, you'll affect in any way the coil? Hang on, did you alter the coil nozzle?? If not, you go ahead and test it again, as you already did that previously.
Cheers,
gr2vessels
RE: Testing of vessel
No repair work carried out at coil nozzle , your answer clarified me.
RE: Testing of vessel
RE: Testing of vessel
Can you manifold the coil and vessel inlet piping together. During the test the coil and vessel will be at the same pressure (except the inlet portion of the coil) so no stress on coil?
JR97
RE: Testing of vessel
That vessel was 100% radiographed and hydrotested on construction.If hydro test can be waived then pls provide me the code referance.
JR 97
The coil and vessel has been tested at diiferent pressures (coil 15 bar and vessel 75 bars).So ican't test both at the same pressure.
RE: Testing of vessel