Debris transport visualization to analyze the fl ow characteristics in reactor vessel for nuclear power plants

송용재; 임동석; 허민범; 김범규; 이두용; 조대성

doi:https://doi.org/10.1016/j.net.2021.07.003

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자료유형: 학술저널

저자정보: 송용재 ((주)미래와도전) 임동석 ((주)미래와도전) 허민범 ((주)미래와도전) 김범규 ((주)미래와도전) 이두용 ((주)미래와도전) 조대성 (경북대학교)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제12호

발행연도: 2021.12

수록면: 4,003 - 4,013 (11page)

DOI: https://doi.org/10.1016/j.net.2021.07.003

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연구결과

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During the long-term cooling (LTC) phase of a loss-of-coolant accident (LOCA) in a pressurized waterreactor (PWR), water is supplied from the containment sump to the reactor coolant system (RCS) by theflooded sump water to the Reactor Vessel (RV) through the broken pipes. As part of the technical effortsfor resolving GSI-191 [( Reid and Crytzer, May. 2007) 1, consideration is needed for the consequences ofdebris penetrating the sump screen and propagating downstream into the RV. Injection of debris(fiberglass) into the RV during the LTC recirculation phase needs special attention to assure that reactorcore cooling is maintained. The point of concern is the potential for debris to adversely affect the reactorcore flow paths or heat transfer [2]. However, all the experiments for proving the coolability of RV havebeen done with the assumption of the most of debris would be transferred to the RV and the bottomnozzle of the FAs. The purpose of the tests is to quantify the amount of the debris that would be accumulated at thelower plenum and the debris that passes through the FAs since non-conservatism of other researchesassumptions that have been used in the past experimental or analytical programs.

#Debris # #GSI-191 # #Licensing issue # #Nuclear power plants # #Insulation # #Fiberglass

참고문헌 (9)

참고문헌 신청

Richard D. Reid / 2007 / Evaluation of Additional Inputs to the WCAP-16530-NP Chemical Model

2012 / Closure Options for Generic Safety Issue e 191, Assessment of Debris Accumulation on Pressurized-Water Reactor Sump Performance

Ann E. Lane / 2008 / Evaluation of Post-Accident Chemical Effects in Containment Sump Fluids to Support GSI-191

M. Ding / 2005 / Charaterization and Head-Loss Testing of Latent Debris from Pressurized Water Reactor Containment Buildings

1991 / an Integrated Structure and Scaling Methodology for Severe Accident Analysis, Appendix D, ‘A Hierarchical Two-Tiered Scaling Analysis

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