第32卷增刊2 2012年12月
核科学与工程
Nuclear Science and Engineering
Vol,32Suppl.2
Dec.2012
基于PSA技术的蒸汽发生器水位低低叠加给水流量低信号触发ASG泵启动信号逻辑设计方案优化的研究
张靖东，孙伟，张继伟，郭智武，李悠然，陈为多
（保媒中广核工程设计有限公可，广东深圳518045）
摘要：为了降低蒸汽发生器水位低低叠加给水流量低信号触发ASG泵启动信号的失效率，本文通过对信号逻辑进行分析，建立故障树模型，找山信号失效率高的根本原因，提出了几种优化方案，并结合优化方案实际的失效率计算结果，对信号的逻辑进行重新设计以及对功能进行重新分配。
关键调：PSA技术；逻辑优化；失效率；功能分配
中图分类号：TM623
文章标患码：B
文章编号0258-0918(2012)S2-0152-06
DiscussionontheLogicOptimizationofASGPumpStartup Signal Triggered by Signals of Low-low Level and Low Feedwater Flowrate in the SG Based on PSA technique
ZHANG Jing-dong,SUN Wei,ZHANG Ji-wei,GUO Zhi-wu,LI You-ren,CHEN Wei-duo
(China Nuelear Power Design Co. , 1.td. (Shenzhen), Shenzhen, Guangdong Prov, 518045, China)
Abstract: In order to reduce the failure rate of ASG pump startup signal triggered by signals of low-Low level and low feedwater flowrate in the SG, fault tree model is created in the paper based on the signal logic analysis to identify the root cause of high failure rate of signals, and several optimization plans are put forward. Combined with the actual failure rate calculation results of the optimization plans, the signal logic is re designed and the functions are re-assigned.
Key words: PSA technique, logic optimization; failure rate; function assignment
Probabilistice Safety Assessment (PSA)可) 以通过故障树建模，FMEA等技术对信号的失效率进行分析，并可以通过分析计算的结果找
出整个信号结构的失效薄弱环节。PSA具有以下几点优势：
PSA可以对所有事故进行定性评价和
收稿日期：2012-08-22：修图日期：2012-11-01
），男，内蒙古人，工程师，学上，现主要从事仪控PSA设计及项日管理工作
作者简介：张端东（1983 152