DOI QR코드

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Development of long-term irradiation testing technology at HANARO

  • Choo, Kee Nam (Neutron and Radioisotope Application Research Division, Korea Atomic Energy Research Institute) ;
  • Yang, Seong Woo (Neutron and Radioisotope Application Research Division, Korea Atomic Energy Research Institute) ;
  • Park, Seng Jae (Neutron and Radioisotope Application Research Division, Korea Atomic Energy Research Institute) ;
  • Shin, Yoon Taeg (Neutron and Radioisotope Application Research Division, Korea Atomic Energy Research Institute)
  • 투고 : 2020.05.11
  • 심사 : 2020.06.16
  • 발행 : 2021.01.25

초록

As the High Flux Advanced Neutron Application Reactor (HANARO) has been recently required to support new R&D relevant to future nuclear systems requiring a much higher neutron fluence, the development of irradiation capsule technology for long-term irradiation testing was performed in three steps (3, 5, 10 dpa). At first, several design improvements of a standard capsule were suggested based on a failure analysis of the capsule and successfully applied for irradiation testing at HANARO at up to eight reactor operation cycles equivalent to 3 dpa. Based on a schematic stress analysis of the vulnerable parts of the previous capsule, an optimized design of the capsule was made for 5 dpa irradiation. The newly designed capsule was safely out-pile tested up to 450 days, which was equivalent to 5 dpa irradiation in the reactor. The test results were submitted to the Reactor Safety Review Committee of HANARO and irradiation testing for 5 dpa was approved. The capsule was also successfully out-pile tested to evaluate the possibility of irradiation testing for 10 dpa. For a higher neutron fluence exceeding 10 dpa, new capsule technologies, including a new capsule that has a different bottom design and neutron flux boosting capsule, were also suggested.

키워드

과제정보

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (NRF-2013M2A8A1035822).

참고문헌

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