Since the publication of wash - 1400 report , probabilistic risk assessment ( pra ) has become an important method of risk assessment and management of complex engineering systems 自wash - 1400報(bào)告發(fā)表以來,概率風(fēng)險(xiǎn)評價(jià)( probabilisticriskassessment , pra )已成為復(fù)雜工程技術(shù)系統(tǒng)進(jìn)行安全風(fēng)險(xiǎn)評估與管理的重要手段。
The reactor protection system reliability analysis is the indispensable branch of the model of probabilistic risk assessment of daya bay npp . the completion of this project will consummate the model of probabilistic risk assessment 反應(yīng)堆保護(hù)系統(tǒng)可靠性分析是大亞灣核電站的pra模型不可或缺的部分,該項(xiàng)工作的完成將使得pra模型更加完善。
A lot of papers about the report of probabilistic risk assessment of daya bay npp and system manuals has been read by the author and let as the basis . in this paper , based on the reliability analysis methods of failure mode and effect analysis and failure tree analysis , according to the result of event tree analysis of probabilistic risk assessment report of daya bay npp , the top events of the fault trees of reactor protection system and the success criteria were established . by using risk - spectrum procedure , the unavailability and the minimal cut - sets ( mcs ) of the fault trees were obtained 本文在閱讀了大量的大亞灣核電站pra報(bào)告和各種系統(tǒng)手冊等資料的基礎(chǔ)上,采用fmea (故障模式和影響分析)和fta (故障樹分析)可靠性分析方法,依據(jù)大亞灣核電站pra事件樹分析的結(jié)果,建立了以緊急停堆失效和專設(shè)安全設(shè)施驅(qū)動失效為頂事件的故障樹,利用risk - spectrum程序,對所建的故障樹進(jìn)行定量分析,計(jì)算,得到系統(tǒng)故障樹的失效概率和最小割集,從而為大亞灣核電站可視化風(fēng)險(xiǎn)分析軟件提供數(shù)據(jù)支持。
The reactor protection system reliability analysis of daya bay npp is an important branch of the probabilistic risk assessment project of daya bay nuclear power plant . the purpose of probabilistic risk assessment of reducing reactor trip is to discover all the signals and the components which can result in reactor trip potentially , to assess the safety and reliability of systematic design , to find the potential design drawbacks and take effective measures to reduce such events 大亞灣核電站反應(yīng)堆保護(hù)系統(tǒng)是大亞灣核電站pra項(xiàng)目的重要的一個(gè)分支,大亞灣核電站減少緊急停堆pra (概率安全分析)是要找出各種可能引起機(jī)組緊急停堆的信號和部件,評價(jià)系統(tǒng)設(shè)計(jì)的安全性和可靠性,找到可能存在的設(shè)計(jì)缺陷,采取有效的防范措施,減少此類事件。
百科解釋
Probabilistic risk assessment (PRA) is a systematic and comprehensive methodology to evaluate risks associated with a complex engineered technological entity (such as an airliner or a nuclear power plant).