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.

• 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)。