Welding to Sock-o-let After Hydro Test

Wait a minute, are you saying "Your Client" came to you asking this question and now your asking us??

Do we get a percentage of "Your Fees?? Nothing in life is free, my friend

DJ95401 yes you are right, didn't even think about that. No worries though I completely understand I have plenty of other sources to look from just thought i'd see if anyone here knew the answer off the top of their head. I'll update with the answer once i find it for other users in the future.

the client would have to weld a new connection to those sock-o-lets would that mean they need to re-hydrotest the vessel?No. the new connection is not part of the vessel. I have run into this problem in the past.

Correct, Just spoke with an ASME AI. Code only covers up the first joint which would be the sock-o-let thus anything after that is cut or welded would not affect the code calculation. Thanks!

The issue is not code or standard. The point that you have made a new weld and this weld needs to be tested either by an NDT method or hydrotest , you cannot just leave it like that.

As stated i ran into this question many years ago. I suggested to the client that we weld a cap onto the fitting and then xray the weld and they accepted as well as the inspector. Additional piping from a vessel falls into the piping code and not pressure vessel. If you exceed the requirements and retain the records then it will usually be accepted.

bntm,

You might want to consider machining out the threads of the o-let fitting thus converting it to a Sock-o-let.

Modifying an inspected and certified vessel surely invalidates the inspection and certification!

If title to the vessel has not yet passed into the ownership of the Client, then modifications, retesting and certification is chargeable. If that is the case, then prepare a quotation and a timeline, and await further instructions. Make sure there is a deadline on the quotation, and laugh all the way to the bank.