Incomplete Penetration Acceptance Criteria B31.3
Incomplete Penetration Acceptance Criteria B31.3
(OP)
Is incomplete penetration rejectable by radiographic examination for normal fluid service to B31.3 Table 341.3.2 if the depth can not be measured (ex. inaccessible weld where depth can not be measured)? The length is acceptable. Depth can not be determined by radiographs
Acceptance criteria are given for length 1.5" long and 1/32" for depth
I have searched the ASME B31.3 interpretations back to 1987 with no results.
Any information would be helpful, thanks
WBH
Acceptance criteria are given for length 1.5" long and 1/32" for depth
I have searched the ASME B31.3 interpretations back to 1987 with no results.
Any information would be helpful, thanks
WBH





RE: Incomplete Penetration Acceptance Criteria B31.3
RE: Incomplete Penetration Acceptance Criteria B31.3
Nigel Armstrong
Karachaganak Petroleum
Kazakhstan
RE: Incomplete Penetration Acceptance Criteria B31.3
I was more interested in the interpretation of the code in regards to acceptance/rejection criteria, when internal surfaces of the weld is not accessible by direct visual inspection.
My interpretation of the code is if the depth cannot be determined by direct visual measurement, then the incomplete penetration should be rejected as both criteria of the code have not been meet.
I am aware UT may be useful in this application, but no always practical.
RE: Incomplete Penetration Acceptance Criteria B31.3
RE: Incomplete Penetration Acceptance Criteria B31.3
Nigel Armstrong
Karachaganak Petroleum
Kazakhstan
RE: Incomplete Penetration Acceptance Criteria B31.3
You are correct that it would be practical as it is 2D,
The code does not allow this practical assumption. It is clearly stated that both criteria must be meet regardless of the location of the weld. This is my quandary, as the code does not clearly address.
The undercut or ip is clearly present but the extent can not be measured. Either one could be defined as a defect by code if depth is exceeded, regardless of access.
Thanks for you input, this would clearly be debatable from both sides.
WBH
RE: Incomplete Penetration Acceptance Criteria B31.3
I agree with your assessment and I would reject unless fabricator could prove the undercut or ip is less than 1/32". It is the fabricators responsibility to prove that the code requirements have been meet.
WHB