Publication: Alternative method of non-destructive testing for nuclear power plant
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2020
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© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).This study presents the results of electrophysical non-destructive testing of collectors welded joints to the body of steam generators PGV 1000M of the reactor WWER-1000. The studied steam generators located in the Resource Сenter of National Research Nuclear University MEPhI at the site of reactors construction factory "Atommash" in Volgodonsk city- Russia. The primary loop collector was welded to the body of steam generators PGV 1000M and the technical condition of welded joints was investigated by electrophysical non-destructive testing (EPhT). In steam generators may appear corrosion and cracks due to corrosive environment and effect of stresses however, EPhT can detect early stages of cracks. The study highlights the theoretical part of electrophysical diagnostics and control method, using modern mathematical signals analysis, and issues related to the practical implementation of EPhT in the factory. The novel alternative method of non-destructive testing can be used in diagnostic oil and gas pipelines, elements of complex technical structures and industrial equipment. It can be used in many industries where it is necessary to process control of the entire structure or its individual parts under operating conditions. Based on control results, potentiograms were constructed for various structural levels of the diagnostic signal. The results of controlled welded joints in steam generators showed their satisfactory condition.
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Alternative method of non-destructive testing for nuclear power plant / Beketov, V.G. [et al.] // International Conference on Physics of Reactors: Transition to a Scalable Nuclear Future, PHYSOR 2020. - 2020. - 2020-March. - P. 2252-2259. - 10.1051/epjconf/202124711002