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采用ＲＥＬＡＰ５／ＭＯＤ３热工水力瞬态分析程序，对４×４燃料组件考验装置（以下简称考验装置）小破口失水事故进行分析计算，预计小破口失水事故下堆芯的热工水力行为（选取当量直径为４ｍｍ小破口）。分析结果表明：在发生当量直径为４ｍｍ的小破口失水事故下，考验装置专设安注系统能确保考验堆芯安全，且不会危及高通量反应堆。
The RELAP5 / MOD3 thermal-hydraulic transient analysis program was used to analyze and calculate the small-break water-loss accident of the 4 × 4 fuel assembly test device (hereinafter referred to as test device). It is estimated that the thermal hydraulic Behavior (select the equivalent diameter 4mm small break). The analysis results show that in the event of a small-break loss of water with an equivalent diameter of 4mm, a dedicated safety injection system for the test equipment can ensure the safety of the core under test and will not endanger the high-throughput reactor.