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論文

JASMINE Version 3による溶融燃料-冷却材相互作用SERENA2実験解析

堀田亮年*; 森田彰伸*; 梶本光廣*; 丸山結

日本原子力学会和文論文誌, 16(3), p.139 - 152, 2017/09

https://doi.org/10.3327/taesj.J16.028

Among twelve FCI cases conducted in the OECD/NEA/CSNI/SERENA2 test series using two facilities, six steam explosion cases, five from TROI and one from KROTOS, were analyzed by JASMINE V.3. Major model parameters were categorized into "focused zone", a core part of interest, and "peripheral zone", the initial and boundary conditions given intentionally for each test case. For the former, base values established through past validation studies of JASMINE V.3 were applied. The code was modified to implement the measured distribution of entrained droplet size acquired in TROI-VISU. For the latter, melt release histories were given as a combination of time tables of jet diameter and release velocity that were estimated based on image data and transit timing data of the melt leading edge. The base values were shown to predict impulse responses of SERENA2 systematically with a reasonable error band. A statistical analysis based on the LHS method was performed. Uncertainty ranges were given based on measurement errors and past validation studies in the JASMINE development. Underlying mechanisms causing apparent differences in the mechanical energy conversion ratio between two facilities were studied from the view point of breakup length and trigger timing.

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確率論的安全評価実施基準,レベル3PSA編

本間俊充; 梶本光廣*; 内藤真*

no journal, ,

日本原子力学会標準委員会発電炉専門部会レベル3PSA分科会では、確率論的安全評価(PSA)のうち、原子力発電所の事故時に環境に放出される放射性物質に起因する公衆の健康影響を評価するレベル3PSA実施手順の標準化の検討を進め、おもに安全目標/性能目標への適合性評価を活用目的としてレベル3PSAの標準案を策定した。

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