The DEFOR-A Experiment on Fraction of Agglomerated Debris as a Function of Water Pool Depth
Flooding of reactor cavity has been adopted as a cornerstone of severe accident management strategy in Swedish type Boiling Water Reactors (BWR). It is assumed that the melt ejected into a deep pool of water will fragment, quench and form a porous debris bed coolable by natural circulation. Success of the ex-vessel accident management is contingent on efficiency of decay heat removal from the core debris materials relocated into the reactor cavity. Agglomeration of incompletely solidified melt debris and formation of solid “cake regions have negative impact on coolability of the porous debris bed. Present work reports results of systematic experimental investigation of the fraction agglomerated debris obtained in the process of hot melt pouring into a water pool under well-defined conditions. The Debris Bed Formation and Agglomeration (DEFOR-A) experiment provides data about the effects of pool depth and subcooling, melt jet diameter, and initial melt superheat on the fraction of agglomerated debris. The data facilitates understanding of underlying physical phenomena of the debris agglomeration which is necessary for development and validation of computational codes to enable prediction of the debris bed coolability in different scenarios of melt ejection.
Severe accident Debris formation Debris agglomeration
Pavel Kudinov Aram Karbojian Chi-Thanh Tran Walter Villanueva
Division of Nuclear Power Safety, Royal Institute of Technology (KTH), Roslagstullsbacken 21, SE-106 Institute of Energy, 6 Ton That Tung, Dong Da, Hanoi, Vietnam Division of Nuclear Power Safety, Royal Institute of Technology (KTH),Roslagstullsbacken 21, SE-106
国际会议
上海
英文
2012-2020
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）