Comparison between NBIC NB-23 and ASME PCC-2

[limesh M]

Dear All,

What is the scope of NBIC NB-23? Comparison with ASME PCC-2?

Taking an example of a pressure vessel thickness loss in bottom dish
end, how would NBIC NB-23 would deal that in comparison to PCC-2?


Thanks and Regards,


Limesh

[guttemberg.souza]

Dear All,

Who can help me about a case regarding a pressure vessel stamped as "U2" which was manufactured, approved and shipped to the company i work for. But during the receiving inspection, in order to fit it to its final position, and according to internal inspection, some defects have been revealed on the visual weld inspection on the root of one of its nozzle like undercuttings, lack of fusion and concavity. We asked for the x-ray film to the manufacturer and they have sent to us but the result was approved. Then we have decided to perform another x-ray  on that joint to confirm the manufacturer x-ray, using the same x-ray techinique and the result revealed porosities out of ASME VIII div 2 requirements. So, in this case, if we decide to repair this joint, would we need to classify the vessel again ?

Best regards,


Guttemberg Souza

[aly mhaskar]

Dear Guttemberg Souza

You can not carry out any repair on the vessel, as it is ASME stamped vessel. Only ASME authorized shop can do the repair with application of R stamp. Again this will inspected by ASME authorized inspector. I suggest you carefully review the Manufacturer's Data Report of the vessel, there you will find parameters including RT done,during design & fabrication of the vessel. You can consult with agencies providing ASME inspection services viz LR insurance, Bureau Veritas, ABS etc for any advice.

 

Mhaskar Aly

Kuwait

 

 

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From: guttemberg.souza <guttembe...@uol.com.br>
To: material...@googlegroups.com
Sent: Wed, August 4, 2010 1:26:31 AM
Subject: [MW:6299] Asme Stamps according section VIII division 2

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[Prakash Gotimukul]

All repairs to code stamped vessel shall have to be under NBIC and reconciliation with RPE.

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G.Prakash
Velosi Certification Services LLC
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[Arunachalam A]

Any repairs to U2 stamped vessel shall be as follows:

1. Any repairs shall be done by an R-Stamp holder, who should also have U2 stamp for new construction.

2. R-Stamp holder shall prepare a repair plan which shall be in conformance with UDS, Manufacturer's design report and MDR.

3. Repair plan shall be sent to an Registered Professional Engineer for his certification.

4. Once his certification is completed, the repair plan along with Drawing/UDS/Manfacturer's design report/MDR shall be submitted to ASME Authorized Inspector, with whom the R-Stamp holder has an Inspection agreement.

5. AI inspects the vessel and agrees with repair plan.

6. R-Stamp holder Carries out repair.

7. Carries out NDE and /Or hydrostatic set as per Repair plan.

8. After AI accepts the repair completion inspection, he authorizes R-Stamping.

9. R-Stamp holder prepares, and gets it certified by AI.

arun

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அருணாசலம்
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சுதர்ஷனா
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[guttemberg.souza]

Dear Arun,

Thanks for your answer and instructions and they are very helpfull. All of them will be sent to the manufacturer and we will be submitting this situation to the ASME and the Authorized Inspection Agency to provide solutions.

Best Regards,


Guttemberg

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அருண�?சலம்
கலைவ�?ணி
சு�?ர்ஷன�?
வருண்

[george....@gr.bureauveritas.com]

R stamp holder yes but not necessarily U2 stamp holder

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அருணாசலம்
கலைவாணி
சுதர்ஷனா

[Arunachalam A]

Yes, Need not be a U2 stamp holder.

arun

[Welder's Helper]

 

1. NB-23 is a post construction CODE while PCC-2 is a STANDARD.
2. NB-23 defines administrative and technical requirements needed to inspect, repair or alter pressure retaining parts while PCC-2 only provides technical methods for repair of equipments & piping.
3. NB-23 is not limited to any specific construction code/standard while PCC-2 only covers ASME construction codes/standards
4. NB-23 only deals with permanent nature of repairs while PCC-2 deals with both natures of repairs (temporary + permanent).

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Welder's Helper

 

Never bend my head infront of anyone other than GOD the almighty.