摘要
本文介绍有关核电站火灾危害的概率分析方法,它包括了时间相关的特定火灾事件序列的定量计算,火灾发生频率和主动防火措施的可靠性数据取自美国文献上的数据,而被动防火措施的数据取自有关西德实验数据。为了定量计算时间相关的事件树,发展了一个计算机程序,可以定量计算和研究对核电站安全具有重要意义的火灾序列。由火灾引起的安全有关的部件或系统的失效概率大约是6×10^(-3)/年到8×10^(-6)/年之间。如果对防火措施进行优化,例如采用自动的主动灭火系统,这个频率还可以降低。
Probabilistic methodology relating to the fire hazards of nuclear power plant is presented in this article. The method includes a time-depedent quantification of specific fire event sequences. Fire occurrence frequencies and reliability data of active fire protection measures were taken from U. S. A. literatures, and the reliability data of passive fire protection were obtained by a evaluation of Germany experiments. For the quantification of the time-depedent event trees a computer code has been developed which permits an evaluation of the dominant fire sequences and the individual fire protection measures as well. The annual frequencies of safety-related components or systems are within a range of 6 E-3 to 8 E-6. The frequencies can be reduced effectively if the fire protection measures are optimized, for example, by automatic activated fire fighting systems.
出处
《核科学与工程》
CSCD
北大核心
1989年第1期1-7,33,共8页
Nuclear Science and Engineering
