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Ex Post Facto Impact Testing
2

Ex Post Facto Impact Testing

Ex Post Facto Impact Testing

(OP)
Section VIII Div 1 vessel is already in service. No impact testing done. No available metal left from the heats used to fab that vessel.

Now we want to rerate the vessel for a lower MDMT, which would (in new construction) require impact testing.

Is there any feasible way to make this happen within code? I.e. is there any way around UG-84(i)?

RE: Ex Post Facto Impact Testing

A fitness for service assessment in accordance with API 579-1/ASME FFS-1 or BS 7910.

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

RE: Ex Post Facto Impact Testing

If you need material for impact testing, install a 4" nozzle. The cutout should be sufficient for testing samples.

eliebl

RE: Ex Post Facto Impact Testing

You need to select an in-service code, not a construction code, to provide specific guidance because a re-rate you require is an alteration. I would suggest using either API 510 or the NBIC and evaluate options like API/ASME FFS-1 or other approach.

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