Vendor forgotten to weld a nozzle on an U stamped vessel

You need to get THAT Vessel Vendor out there to the job site and have them make good on their contract. It should not cost you anything because the vessel should still be under Warranty.

Stuff can happen and ASME is suppose to avoid these kind of things.

You should not have any trouble by following the above post. But ask the vender who his AI is.

Yep. ASME standard gives the procedures and requirements. The vendor should be able to do that. DO not accept excuses, but accept good solutions in installing the nozzle by its part, with no cost for you.

As always Abdel is on top of the these things.

First, I would look at the certificate, find the AI's signature and company Hartford, One Beacon, of perhaps Chubb here in the US) and immediately inform them also.

Mistakes happen, but on original design, specs, and drawings?

Hum, I can venture what body certified the vessel ( been finding a lot of this and similar things lately). attribute it to AI client overload, long hours, and maybe even low pay. Of course these are not legitimate excuses.

If the unit is still under warranty send it back before commissioning and do not repair (even though a R Stamp can be used as a last resort).

If you have lost that comfort level with the vendoe, whose QA Department should have found this both before and after the AI made his visit, many qualified shops, including one just sexpanding offerings here in the NE US to rectify such oversights.

Contact me for more info if you desire.

Thanks, Abdel, for your wisdom and insight in things Pressure Vessels and Pipe.

To all the respondents that have been highly critical of the vessel supplier, might I note that Guest never indicated that the missing nozzle was shown on the drawings or specifications that the builder constructed the vessel too. You have, apparently, assumed that the vendor was at fault. Every ASME vendor I know will submit drawings and calculations for approval before fabrication will begin. At this point the customer should verify everything is "in order". I would also point out that the company buying the vessel should have provided some form of Quality Control inspection on the vessel before shipment as well. When we have commissioned a vessel to be built by any of our vendors we always make a point of inspecting the unit at least once in the vendor's shop. Lets not disparage our hard working manufacturers without cause. However, if Guest verifies that this nozzle was, in fact, shown on the construction documents and the vendor did not include it, then, certainly, he is responsible for making the correction, either on his own, or through a third party.

Design and drawings shows this nozzle.

That is my read.

Reread the whole post.

You must reread read the post, it states the nozzle is shown on the print.

You did the same as the vendor........and missed it.

Correct. Mea culpa.

I am not a pressure vessel engineer but let me ask a stupid question.

What needs to be done if the vessel was originally heat treated in the shop after all welding?

Anything special needs to be done in field?

great question!!