Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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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)
  • Received : 2020.05.11
  • Accepted : 2020.06.16
  • Published : 2021.01.25
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Abstract

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.

Keywords

Acknowledgement

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

References

  1. K.N. Choo, et al., Material Irradiation at HANARO, Korea, Research Reactor Application for Materials under High Neutron Fluence, 2011. IAEA-TECDOC-1659.
  2. K.N. Choo, et al., Contribution of HANARO irradiation technologies to national nuclear R&D, Nucl. Eng. Technol. 46 (2014) 501-512. https://doi.org/10.5516/NET.07.2014.006
  3. M.S. Cho, et al., Material irradiation by capsules at HANARO, Nucl. Technol. 193 (2016) 330-339. https://doi.org/10.13182/NT15-19
  4. K.L. Murty, I. Chsrit, Structural materials for Gen-IV nuclear reactors: challenges and opportunities, J. Nucl. Mater. 383 (2008) 189-195. https://doi.org/10.1016/j.jnucmat.2008.08.044
  5. K.N. Choo, et al., Development of a low-temperature irradiation capsule for research reactor materials at HANARO, Nucl. Technol. 195 (2016) 213-221. https://doi.org/10.13182/NT15-154
  6. K.N. Choo, B.G. Kim, Development and application of irradiation technology in HANARO, Solid State Phenom. 135 (2008) 93-98. https://doi.org/10.4028/www.scientific.net/SSP.135.93
  7. K.N. Choo, et al., Design optimization of HANARO irradiation capsule for long-term irradiation testing, Sci. Technol. Nucl. Install. 2016 (2016) 3908610.
  8. J.M. Keisler, O.K. Chopra, W.J. Shack, Statistical models for estimating fatigue strain-life behavior of pressure boundary materials in light water reactor environments, Nucl. Eng. Des. 167 (1996) 129-154. https://doi.org/10.1016/S0029-5493(96)01293-9
  9. A. Fissolo, et al., Statistical models for estimating fatigue strain-life behavior of pressure boundary materials in light water reactor environments, Int. J. Fatig. 31 (2009) 1196-1210. https://doi.org/10.1016/j.ijfatigue.2008.11.018
  10. J. Sun, et al., A comparative study on welding temperature fields, residual stress distributions and deformations induced by laser beam welding and CO2 gas arc welding, Mater. Des. 63 (2014) 519-530. https://doi.org/10.1016/j.matdes.2014.06.057
  11. S.A. Shipilov, Solving some key failure analysis problems using advanced methods for materials Testing, Eng. Fail. Anal. 14 (2007) 1550-1573. https://doi.org/10.1016/j.engfailanal.2006.12.003
  12. H.J. Ryu, J.M. Park, Y.J. Jeong, K.H. Lee, Y.S. Lee, C.K. Kim, Y.S. Kim, Post-irradiation analyses of U-Mo dispersion fuel rods of KOMO tests at HANARO, Nucl. Eng. Technol. 45 (2013) 847-858. https://doi.org/10.5516/NET.07.2013.715
  13. Y.W. Thak, J.Y. Oh, H.J. Kim, E.H. Kong, J.S. Yim, H.M. Kim, B.O. Yoo, Y.H. Jung, S.B. Ahn, K.H. Lee, Y.J. Jeong, J.M. Park, PIE results of mini-plate irradiation test HAMP-1 for U(Mo)-Al(Si) dispersion fuel, in: Proceeding of RERTR 2015, 2015. Seoul, Korea, Oct. 11-14.
  14. Seong Woo Yang, Seung Jae Park, Yoon Taeg Shin, Man Soon Cho, Kee Nam Choo, Preliminary Study on the Application of Booster Fuel for HANARO Irradiation Facility, Transactions of the Korean Nuclear Society Spring Meeting, Jeju, Korea, 2017. May 18-19.