한국안전학회지 (Journal of the Korean Society of Safety)

  • 제39권1호
  • /
  • Pages.96-103
  • /
  • 2024
  • /
  • 1738-3803(pISSN)
  • /
  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
권호 표지
DOI QR코드

DOI QR Code

입자크기분포 설정 및 멀티스레딩을 통한 소외사고영향분석 최적화 타당성 평가

Feasibility Study on the Optimization of Offsite Consequence Analysis by Particle Size Distribution Setting and Multi-Threading

  • 김승환 (한국원자력연구원 리스크평가연구부) ;
  • 김성엽 (한국원자력연구원 리스크평가연구부)
  • Seunghwan Kim (Risk Assessment Research Division, Korea Atomic Energy Research Institute) ;
  • Sung-yeop Kim (Risk Assessment Research Division, Korea Atomic Energy Research Institute)
  • 투고 : 2023.12.04
  • 심사 : 2024.02.08
  • 발행 : 2024.02.29
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The demand for mass calculation of offsite consequence analysis to conduct exhaustive single-unit or multi-unit Level 3 PSA is increasing. In order to perform efficient offsite consequence analyses, the Korea Atomic Energy Research Institute is conducting model optimization studies to minimize the analysis time while maintaining the accuracy of the results. A previous study developed a model optimization method using efficient plume segmentation and verified its effectiveness. In this study, we investigated the possibility of optimizing the model through particle size distribution setting by checking the reduction in analysis time and deviation of the results. Our findings indicate that particle size distribution setting affects the results, but its effect on analysis time is insignificant. Therefore, it is advantageous to set the particle size distribution as fine as possible. Furthermore, we evaluated the effect of multithreading and confirmed its efficiency. Future optimization studies should be conducted on various input factors of offsite consequence analysis, such as spatial grid settings.

키워드

과제정보

This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT: Ministry of Science, ICT) (No. RS-2022-00144405).

참고문헌

  1. U.S. NRC, Reactor Safety Study: An Assessment of Accident Risks in U.S. Commercial Nuclear Power Plants, NUREG-75/014 (WASH-1400), U.S. Nuclear Regulatory Commission, 1975.
  2. S. J. Lee et al., "Probabilistic Safety Assessment of Nuclear Power Plants", Korea eBook Publishing Company, pp. 89-143, 2021.
  3. S. Y. Kim et al., "Multi-Unit Level 3 Probabilistic Safety Assessment: Approaches and Their Application to a Six-Unit Nuclear Power Plant Site", Nuclear Engineering and Technology, Vol. 50, Issue 8, pp. 1246-1254, 2018.
  4. N. E. Bixler and S. Y. Kim, "Performing a Multi-Unit Level-3 PSA with MACCS", Nuclear Engineering and Technology, Vol. 53, Issue 2, pp. 386-392, 2021.
  5. S. H. Kim and S. Y. Kim, "A Study on the Efficiency of Offsite Consequence Analysis by Multi-Threading and Plume Segmentation", J. Korean Soc. Saf., Vol. 36, No. 1, pp. 166-173, 2022.
  6. S. H. Kim and S. Y. Kim, "Apparatus, Method and Computer Program for Optimization of Offsite Consequence Analysis by Plume Segmentation", Korean Intellectual Property Office, (Korea Patent Pending No. 10-2023-0126451), 2023.
  7. S. H. Kim and S. Y. Kim, "Influence of Particle Size Distribution Setting on the Results and Speed of Offsite Consequence Analysis", Asian Symposium on Risk Assessment and Management 2023, Hong Kong, Dec. 04-06, 2023.
  8. S. Y. Kim et. al., "Interfacing between MAAP and MACCS to Perform Radiological Consequence Analysis", Nucl. Eng. Technol., Vol. 54, No. 4, pp. 1516-1525, 2022.
  9. J. H. Cho, S. H. Han, D. S. Kim and H. G. Lim, "Multi-Unit Level 2 Probabilistic Safety Assessment: Approaches and Their Application to a Six-Unit Nuclear Power Plant Site", Nuclear Engineering and Technology, Vol. 50, Issue 8, pp. 1234-1245, 2018.
  10. SNL, MACCS (MELCOR Accident Consequence Code System) User Guide - Version 4.0, Revision 1, SAND2022-7112, Sandia National Laboratories, 2022.
  11. S. Y. Kim and D. S. Kim, "Development of MUST (MultiUnit Source Term) Converter Version 1.0", Transactions of the Korean Nuclear Society Autumn Meeting, Changwon, Korea, Oct. 21-22, 2021.
  12. S. Y. Kim, Development of Mr. (Multi-run) Manager Version 1.0, Transactions of the Korean Nuclear Society Autumn Meeting, Changwon, Korea, Oct. 21-22, 2021.
  13. S. H. Kim and S. Y. Kim, "Development of Interfacing Software to Support MACCS Sensitivity Analyses", Asian MACCS User Group Meeting, Singapore, Nov. 9-11, 2022.