快堆燃料组件瞬间完全堵流研究综述

Review of Study on Total Instantaneous Blockage Accident in Fast Reactor

燃料组件瞬间完全堵流(TIB)事故可能导致快堆堆芯结构材料和燃料的熔化,并可能引发堆芯解体事故(CDA)。因此,国际上对TIB事故进行了有计划的、大规模针对性研究。本文总结了TIB研究在国际上的进展,综述了TIB研究领域最重要的SCARABEE-N实验和各种相关堆外实验,并将与TIB研究关系最紧密的BE+组和APL组实验的条件、进程进行了对比,同时介绍了与SCARABEE计划同步开发的各种分析模型和程序,以及将SCARABEE实验成果用于其他程序的验证工作和应用情况。

The fuel subassembly total instantaneous blockage accident can cause core structure and fuel melt, even lead to a core disrupt accident（CDA） in fast reactor. A well-planned program to study such a severe accident has been implemented all over the world. The total instantaneous blockage accident（TIB） study progress was summarized in the paper. The most important SCARABEE-N in-pile tests in TIB fields were reviewed, also various out-of pile backup tests. The SCARABEE BE＋ group and APL group, which were directly linked to TIB scenario, were compared for the different test conditions and phenomena. Many analysis models and computer codes developed in parallel with SCARABEE program were presented, followed by using SCARABEE results for code verification and engineering practice.