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A Combined Procedure of RSM and LHS for Uncertainty Analyses of CsI Release Fraction Under a Hypothetical Severe Accident Sequence of Station Blackout at Younggwang Nuclear Power Plant Using MAAP3.0B Code

Han, Seok-Jung   (Korea Advanced Institute of Science and Technology Department of Nuclear EngineeringUU0001375  ); Tak, Nam-Il   (Korea Advanced Institute of Science and Technology Department of Nuclear EngineeringUU0001375  ); Chun, Moon-Hyun   (Korea Advanced Institute of Science and Technology Department of Nuclear EngineeringUU0001375  );
  • 초록

    Quantification of uncertainties in the source term estimations by a large computer code, such as MELCOR and MAAP, is an essential process of the current Probabilistic safety assessment. The main objective of the present study is to investigate the applicability of a combined procedure of the response surface method (RSM) based on input determined from a statistical design and the Latin hypercube sampling (LHS) technique for the uncertainty analysis of CsI release fractions under a Hypothetical severe accident sequence of a station blackout at Younggwang nuclear power plant using MAAP3. OB code as a benchmark problem. On the basis of the results obtained in the present work, the RSM is recommended to be used as a principal tool for an overall uncertainty analysis in source term quantifications, while using the LHS in the calculations of standardized regression coefficients (SRC) and standardized rank regression coefficient (SRRC) to determine the subset of the most important input parameters in the final screening step and to check the cumulative distribution functions obtained by RSM. Verification of the response surface model for its sufficient accuracy is a prerequisite for the reliability of the final results that can be obtained by the combined procedure proposed in the present work.


  • 참고문헌 (21)

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 저자의 다른 논문

  • Chun, Moon-Hyun (28)

    1. 1980 "Investigation of Molten Fuel Relocation Dynamics with Applications to LMFBR Post-Accident Fuel Relocation" Journal of the Korean Nuclear Society = 원자력학회지 12 (2): 88~98    
    2. 1981 "Analyses of Precooling Parameters for a Bottom Flooding ECCS Rewetting Velocity Model" Journal of the Korean Nuclear Society = 원자력학회지 13 (1): 12~21    
    3. 1981 "태양열집열기(太陽熱集熱器)에 관하여" 태양에너지 = Solar energy 1 (1): 37~44    
    4. 1982 "한국가정용(韓國家庭用) 태양열(太陽熱) 온수기(溫水器)에 관(關)한 연구(硏究)" 태양에너지 = Solar energy 2 (2): 21~27    
    5. 1984 "평판형 액체식 집열기 의 각종 변수 가 집열기 의 열성능 에 미치는 영향" 大韓機械學會論文集 8 (2): 145~153    
    6. 1984 "태양열주택 및 가정용 태양 온수시스템의 설계용 전산코드" 태양에너지 = Solar energy 4 (2): 37~42    
    7. 1985 "평만형 태양열 집열기 를 설치한 자연 순환식 급탕시스템 의 성능 에 관한 연구" 大韓機械學會論文集 9 (5): 579~589    
    8. 1987 "가상적 중대사고에 대한 대형건식 가압경수로 격납용기의 반응해석" Journal of the Korean Nuclear Society = 원자력학회지 19 (4): 292~309    
    9. 1987 "자연순환식 태양열 급탕 시스템의 성능 추정 방법에 관한 연구" 태양에너지 = Solar energy 7 (2): 37~53    
    10. 1989 "공기와 물의 수평유동에 있어 관의 급격한 입구축소 모양이 단상 및 이상유 압력강하에 미치는 영향에 관한 실험적 연구" Journal of the Korean Nuclear Society = 원자력학회지 21 (2): 123~133    

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