【摘要】 本文分析计算了200MW 低温核供热站堆芯裸露事故序列及其发生频率。低温核供热堆具有良好的固有安全性,因而其失水事故进展极其缓慢,即使在失去全部热阱情况下,两天之内不采取修复或站外补水等补救措施而导致的堆芯裸露频率低于2.6×10^-10/堆。年,若两天内采取修复或站外补水措施,堆芯裸露频率即降到可以忽略的1×10^-12/堆。年以下。更多还原

【Abstract】 This paper briefly describes the principal reactor core uncove-ring accident sequences on 200MW Nuclear Heating Plant andpresents the occurring frequency of these sequences.As Low te-mperature heating reactor has good inherent safety,Its LOCAincreased very slowy,and even if the reactor loses of all heat sinkand does not take repairing or out-station inputting water measurewithin two days,the reactor core uncovering accident occurringfrequency is lower than 2.6×10^-10/R.a,If it takes repairing andout-sation inputting water measure,its value 2.6×10^-12/R·a,thiscan be neglected.更多还原