緊急停堆 的英文怎麼說
中文拼音 [jǐnjítíngduī]
緊急停堆
英文
emergency shut down-
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報告和各種系統手冊等資料的基礎上，採用fmea （故障模式和影響分析）和fta （故障樹分析）可靠性分析方法，依據大亞灣核電站pra事件樹分析的結果，建立了以緊急停堆失效和專設安全設施驅動失效為頂事件的故障樹，利用risk - spectrum程序，對所建的故障樹進行定量分析，計算，得到系統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險分析軟體提供數據支持。On april 26, 1986 was mainly due to a combination of severe design deficiencies of the reactor and its shutdown system, coupled with violation of procedures when conducting an experiment on the reactor unit
主要是由於反應堆及其緊急停堆系統在設計上存在嚴重缺陷，加上在反應堆進行實驗時違反有關程序。由於The reactor can be shutdown during emergency by cutting off the power supply to the control rod driving mechanism which then causes the control rods to drop down to the reactor core by gravity quickly and thereby stopping the nuclear fission immediately
在需要緊急停堆時， ?須切斷控制棒驅動機械的電源，控制棒便會因地心吸力而快速下墜至反應堆堆芯，立即停止核裂變。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
大亞灣核電站反應堆保護系統是大亞灣核電站pra項目的重要的一個分支，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組緊急停堆的信號和部件，評價系統設計的安全性和可靠性，找到可能存在的設計缺陷，採取有效的防範措施，減少此類事件。The primary function of reactor protection system is to protect the integrity of the three nuclear safety barriers, namely, fuel cladding, primary pressure boundary and containment. when the certain safety limits, determined by the accident studies, are exceeded, the reactor protection system will give the protection signals of reactor trip and / or safeguard actuations, and then the reactor trip system and / or the engineered safety features are actuated
反應堆保護系統的功能主要是保護三道核安全屏障（燃料包殼、一迴路壓力邊界和安全殼）的完整性，當運行參數達到危及三道屏障完整性的閾值時，保護系統動作觸發反應堆緊急停堆和啟動專設安全設施。分享友人