RB2 Pre-test Calculation using PAPAS-2S based on a Preliminary Post-test Calculation of the RB1 Test

PAPAS-2SコードによるRB1予備的試験解析に基づくRB2試験事前解析

深野 義隆  ; 佐藤 一憲 

not registered; not registered

CABRI-RAFT計画のRB1試験結果に基づき、より進んだ燃料溶融での冷却材中への溶融燃料放出挙動の観察及び放出燃料の冷却性を確認するRB2試験を実施することがパートナー間で合意された。本研究では、特別な人工欠陥を施したピンの燃料熱条件を反映したRB1試験の予備的試験解析をまず実施し、このRB1試験の解析に基いてRB2試験の事前解析を実施した。この事前解析では、出力及び冷却材の流量履歴、人工欠陥の軸方向位置をパラメータとし、試験目的を充足する最適な試験条件を提案した。

Based on the RB1 test result in the CABRI-RAFT Program, it was agreed between the partners to perform the RB2 test which aims at observation of molten fuel ejection into the coolant channel at further fuel melting and at confirmation of coolability of ejected fuel. In this study, a preliminary post-test calculation for the RB1 test is performed first to reflect the fuel thermal condition expected for the pins with the special artificial defect preparation. Pre-test calculations for the RB2 test are then performed based on the results of this RB1 calculation. Power and coolant flow histories as well as the axial location of defect were selected as parameters in this study and a set of test condition is proposed which is believed to be most suitable to fulfill the test objectives.