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Autor:
Ju-Hee Kim, Jong Sung Kim, Nam-Su Huh, Chang-Young Oh, Heung-Bae Park, Sung-Ho Lee, Hong-Yeol Bae, Yun Jae Kim, Nam-Young Hur, Seung-Geon Lee, Ji Soo Kim
Publikováno v:
Transactions of the Korean Society of Mechanical Engineers A. 35:1337-1345
In pressurized water reactors (PWRs), the reactor pressure vessel (RPV) upper head contains numerous control rod drive mechanism (CRDM) nozzles. In the last 10 years, the incidences of cracking in alloy 600 CRDM nozzles and their associated welds has