Duplicated Radiographs, an Expired Certificate and a Offered Upgrade
During final inspection of a packaged boiler, a third-party supervisor reviews 42 radiographs of circumferential butt welds. Films for welds C-17 and C-18 appear identical: the same weld ripple pattern, the same IQI placement and the same density of 2.8, but the date stickers differ by one day. The RT technician's ISO 9712 Level II certificate expired three weeks earlier; the NDT subcontractor says renewal is in process. The manufacturer's QA manager explains that both welds were re-shot and the films are simply similar, that re-radiographing will cost three days, and that the boiler is needed for commissioning. He offers the supervisor a complimentary hotel upgrade and says the client's project engineer already agreed by phone. The supervisor's own manager is travelling and cannot be reached. The contract requires ASME Section I, ISO 9712 certification and independent third-party release.
1. Identify the regulatory, code and conduct issues and state the immediate actions the supervisor should take.
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The immediate issue is record integrity, not weld appearance. Two films with the same weld ripple pattern, IQI placement and density but different date stickers indicate either a duplicated film or a serious RT log error. Either way, the radiographs for C-17 and C-18 cannot be accepted as independent evidence of weld quality. The technician's ISO 9712 certificate expired three weeks ago, so the RT was not performed by a currently certified person as required by the contract; a renewal in process does not retroactively validate the work.
The offered hotel upgrade is a gift intended to influence a verification decision. The supervisor should decline it, disclose the offer in writing, and avoid any private discussion with the QA manager. The verbal claim that the client's project engineer agreed is not a controlled instruction and should not be relied upon.
Immediate actions: stop the release; secure the 42 films and the RT log; check for other duplicate images, repeated IQI images or inconsistent exposure records; verify the technician's certificate status and the subcontractor's approval; require re-radiographs of C-17 and C-18 by a currently certified technician under witnessed conditions; notify the manufacturer in writing and issue an NCR; inform the supervisor's manager and the client's authorized representative. The release certificate should remain unsigned.
2. The manufacturer argues that the welds are sound, so the film problem is only administrative. Explain why that argument is wrong and what investigation is needed.
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The argument confuses the physical condition of the weld with the evidence needed to accept it. Acceptance of a pressure-retaining weld depends on traceable, valid NDT records. If the film is duplicated, there is no evidence that C-17 and C-18 were each examined over their full length. A sound-looking weld on a duplicated image proves only that one weld was sound. The other weld may be untested, and the RT coverage required by ASME Section I has not been demonstrated.
The investigation should establish: whether the two films are physically identical or merely similar; whether the film log, exposure numbers and location markers are consistent; whether the same image appears elsewhere in the 42 films; whether the technician actually performed the work and when; and whether the subcontractor's certification and procedures were valid. The supervisor should require re-radiography of any weld with doubtful records, not only the two suspect welds, and should extend the check to the subcontractor's other work on the project if a pattern of duplication is found.
If duplication or falsification is confirmed, the supervisor should preserve evidence, report through the inspection agency's quality and ethics channels, and notify the client. The manufacturer's three-day schedule impact is not a basis for accepting unverified pressure parts.
3. How should the supervisor handle the gift offer and the later instruction from their own manager to sign the release?
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The gift should be declined at once, without ambiguity, and disclosed in writing to the supervisor's employer and the client. The supervisor should record the date, the person who made the offer, the wording and any witnesses. Accepting even a small benefit from a party whose work is being inspected creates a conflict of interest and undermines the independence required for third-party release.
If the supervisor's manager later instructs them to sign, the supervisor should ask for the instruction in writing and should not sign while the RT records are invalid. The supervisor should set out the facts: the films are duplicated or untraceable, the technician was not certified, and the contract requires independent verification. Signing would misrepresent that the boiler met the contract and could create a safety and regulatory exposure.
If the manager persists, the supervisor should escalate to the agency's quality or ethics function and to the client's authorized representative, and should document that the release was withheld for cause. The supervisor should not accept a compromise in which the certificate is issued with a private assurance that the welds are sound. The correct outcome is re-test by a certified technician and a new release decision based on valid evidence.