New Pressure Vessel and not put into service to be repaired 1

[Joss10]

Dear mates,

A pressure vessel was designed and built in accordance with ASME VIII - Div. 1, a year later it was decided to put it into service and it was discovered that the water left inside the vessel as a result of the hydraulic test generated serious damage by corrosion inside it. and they must be repaired by placing patches inserted.

The question is under what code should I perform this major repair, can API 510 be applied?

Thanks.

 

[mk3223]

May use API 510 and ASME PCC-2 for the vessel repair.

 

[weldstan]

Depends on Jurisdiction requirement. May need to be repaired under NBIC rules.

 

[0707]

I would do a fitness for service and after that I would require a notified body NOBO to respond for the reparing.

luis

 

[Wyzzard]

I agree with WeldStan. Use the NBIC. This is probably the most accepted repair code worldwide, for boilers and pressure vessels.

 

[PMCap]

You have several options:

1. Perform and document an analytical "Fitness for Service" evaluation showing compliance with ASME Section VIII, Div. 1, exist in the current condition.
2. Internal Weld Build-up repair of degraded area to original condition.
3. External Weld Build-up repair over degraded area per NBIC criteria.
4. Flush Patch (window)repair.
5. "PMCap" - restoration by internal or external encapsulation of degraded area.

Whatever method is chosen - assure that applicable NBIC, jurisdictional, and Authorized Code Inspector requirements are complied with.

Paul M

 

[JC83]

Repair to API510 and ASME PCC2, just remember to keep the design criteria to the original design of the pressure vessel in this case ASME VIII (the same publication year as stated on the nameplate).

 

[PMCap]

Rules and criteria applicable to field repairs of ASME Code Stamped Section VIII, Div. 1 vessels, having been subject to damage or degradation from the original as-constructed and ASME Code stamped condition, are typically governed by the Jurisdictional Authority and the Insurance Company applicable to the facility and location where the vessel is to be installed and operated.

Use of some API 510 repair methods may not be acceptable for ASME Section VIII, Div. 1 repairs by the NBIC, Jurisdiction, or Insurance Company. Additionally, PCC-2 is not a Code but is a document that provides a compilation of repair methods that could considered for ASME Section VIII, Div. 1, vessel repairs or restorations.

Some of the repair or restoration methods listed in API 510 and in PCC-2 may not be allowed/acceptable per NBIC requirements or applicable Jurisdictional or Insurance Company requirements as following their implementation the repaired vessel would no longer be in compliance with Section VIII, Div. 1.

Accordingly, any planned repair or restoration of an ASME Section VIII, Div. 1, vessel should first be reviewed to assure the method to be implemented satisfies all Jurisdictional and Insurance Company requirements, and where differences between the planned repair and Jurisdictional requirements exist, the repair method is reviewed and approved by the Jurisdiction, Authorized Inspector, and Insurance Company.