Rehydro test due to clip welding after PWHT
Rehydro test due to clip welding after PWHT
(OP)
A Pressure Vessel ( Mat'l : A516-70 * 26 t )was Hydrostatic pressure tested after PWHT and Ship out to site. .
But Internal clip (8 t * 200 W ) is requested additionaly to attach insid of Vessel with 6mm fillet weld .
Welding will be done after preheating and after heating with 212 F .
I Think Local PWHT could be get exception by Code and Client , But How about Re Hydro Test.
Should it be done or any exception approved by Code and
any other Practice in lieu of retest.
Thanks in advance





RE: Rehydro test due to clip welding after PWHT
RE: Rehydro test due to clip welding after PWHT
RE: Rehydro test due to clip welding after PWHT
RE: Rehydro test due to clip welding after PWHT
I was referring to a vessel that has been completed, and for which the applicable Code form ( U1/A) has been signed off by both the AI and the manufacturer. Is that what you mean by completion of the paperwork or do have something else in mind?
I'm just trying to get a better understanding of the rules.
thanks,
RE: Rehydro test due to clip welding after PWHT
Yes.
RE: Rehydro test due to clip welding after PWHT
Is the U-1 signed/registered yet?
If the vessel is in the field,that is complete per the paperwork/QC System of the orginal manufactuer and if a "R" firm did this work,a NBIC action should be OK.
You could always ask the Local Jurisdicton. They are ones who need to be happy.
RE: Rehydro test due to clip welding after PWHT