Questions about TOFD flaw detection?
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Our company plans to no longer use X-ray flaw detection on welds and contracts the non-destructive testing to a "TOFD testing company", but our company's regulations are: The TOFD subcontract report issued by the subcontractor must be reviewed by the responsible non-destructive testing engineer of our unit. However, currently our non-destructive testing responsible engineer only has UT Level II and RT Level II qualifications. Can the responsible engineer currently have the qualifications to review the TOFD report? Answer from the State Administration for Market Regulation: Absolutely. I don’t understand how someone who doesn’t know anything about TOFD can audit it! https://mp.wei * n.qq.com/s?__biz=MzIyNjc0OTYwMQ==&mid=2247486539&idx=1&sn=0c30a6b69901ada426ca9107029ce9b7&chksm=e86af185df1d78930421870e0eff215d3577051870e5d92f26bef3f7f726e777e0b3e3e86214&mpshare=1&scene=1&srcid=0605bRUphWzDSMGkxSUIqBMj&key=f75c0be8c395a449509430432e5730d87680f46b57023dd7eaf623849b31a926fec7db0a65fbd983f87364b6f6515daa77f7691661258a01935e7496ccfa04fa657dd1f80ad2bc6806319d4fa8a8f9cf&ascene=1&uin=MjY5ODk4NzMwOQ%3D%3D&devicetype=Windows+10&version=62060739&lang=zh_CN&pass_ticket=ayPMUtA5mQrNJzyjGz3LuFuwmtwU9TZ9lxosCwSN0Z62RfHyvm2maAS%2BtRKfn6gV
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Our local Special Inspection Institute doesn’t know what to do because it is a new problem. But it cannot prove that the above answer was answered by the State Administration for Market Regulation. If anyone knows, please give me some advice.
Since you entrust another unit to conduct testing, it means that you do not have this ability, and the entrusted unit has the ability to test and issue reports. If you have it yourself, there is no need to outsource it. For example, a certain company obtained a manufacturing certificate but did not have a design certificate, and the drawings were designed by another company. After the drawings arrive, they need to be reviewed (manufacturability review). However, the manufacturer filled in some technical issues in the craftsmanship review report. The review expert said that you don’t have design qualifications, so what qualifications do you have to find technical errors in other people’s drawings?
That question is difficult to find. . Only found this
The applicant unit must have the ability to review subcontracting units. This should be implemented in accordance with regulations regardless of the General Administration's response.
It should be noted that the meaning of the General Administration’s answer of “completely yes” is as follows: From the perspective of laws, regulations and standards related to special equipment, there are no regulations that say you are not allowed to do this. As for whether it is possible from a technical perspective, it is entirely up to your company to decide. If you think it's not possible, then ask your reviewer to take the TOFD certificate test. If you think it's possible, then there's nothing wrong with it in terms of laws and regulations.
Starting today, our company will switch from X-ray flaw detection to TOFD flaw detection, which is more efficient.* * improve. Using TOFD ultrasonic flaw detection, an annular seam with a diameter of 2550 mm can be completed in 30 minutes.
It is only a matter of time that TOFD ultrasonic flaw detection replaces radiographic flaw detection. Everyone has switched to TOFD ultrasonic flaw detection, but if you still use radiographic flaw detection, you will be eliminated sooner or later!