Abstract
After years of research and practice, the PetroChina Pipeline R&D Center has developed an effective method for tank bottom in-service acoustic emission testing, which has been popularized and applied in PetroChina Pipeline Company. In 2013 a pipeline company planned to introduce acoustic emission (AE) technology, but there were some doubts about the effectiveness of this technology, so it invited our center to test five tanks with AE before their follow-up internal inspections and to verify the validity of the AE test by comparing AE results with the follow-up inspection results. The results show that the AE test results of four tanks are in line with the follow-up internal inspections, and one AE test result is severely deviated with the real tank bottom status. In view of the deviation, the reasons are analyzed from four aspects, i.e., the lack of tank information, the characteristics of found defects, the review of original AE data, and the property of acoustic emission technology, which are accepted by the tanker owner. Ultimately, the company plans to apply acoustic emission technology to their tank maintenance process. This paper describes in detail the acoustic emission detection and verification process in order to give some references for the industry counterparts, while promoting the development of the AE technology.
Published Version
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