仪器仪表用户
儀器儀錶用戶
의기의표용호
Instrumentation Customer
2015年
6期
11-14
,共4页
ESFAS%软件共因故障%多样化驱动系统%标准%适应性
ESFAS%軟件共因故障%多樣化驅動繫統%標準%適應性
ESFAS%연건공인고장%다양화구동계통%표준%괄응성
ESFAS%software common cause failure%diversity actuation system%standard%adaptability
核电机组数字化仪控保护系统的引入,体现了数字化的优势,也带来了对软件共因故障的担忧,数字化保护系统防御软件共因故障的方案成为各新建机组核安全评审中的重要问题。为防止保护系统软件共因故障情况下专设安全设施驱动系统(ESFAS)正常触发信号丢失,田湾核电站二期机组在数字化保护系统(TXS)的基础上设置了一套多样化驱动系统(DAS,又名MASS即手动驱动后备系统),提供独立于TXS软件的硬手操方案。本文概述了法规标准对数字化保护系统防御软件共因故障的要求以及设置多样化驱动方案的要求,在考虑TXS原有系统架构的基础上,论述了田湾数字化专设安全设施多样化驱动方案对标准的适应性。
覈電機組數字化儀控保護繫統的引入,體現瞭數字化的優勢,也帶來瞭對軟件共因故障的擔憂,數字化保護繫統防禦軟件共因故障的方案成為各新建機組覈安全評審中的重要問題。為防止保護繫統軟件共因故障情況下專設安全設施驅動繫統(ESFAS)正常觸髮信號丟失,田灣覈電站二期機組在數字化保護繫統(TXS)的基礎上設置瞭一套多樣化驅動繫統(DAS,又名MASS即手動驅動後備繫統),提供獨立于TXS軟件的硬手操方案。本文概述瞭法規標準對數字化保護繫統防禦軟件共因故障的要求以及設置多樣化驅動方案的要求,在攷慮TXS原有繫統架構的基礎上,論述瞭田灣數字化專設安全設施多樣化驅動方案對標準的適應性。
핵전궤조수자화의공보호계통적인입,체현료수자화적우세,야대래료대연건공인고장적담우,수자화보호계통방어연건공인고장적방안성위각신건궤조핵안전평심중적중요문제。위방지보호계통연건공인고장정황하전설안전설시구동계통(ESFAS)정상촉발신호주실,전만핵전참이기궤조재수자화보호계통(TXS)적기출상설치료일투다양화구동계통(DAS,우명MASS즉수동구동후비계통),제공독립우TXS연건적경수조방안。본문개술료법규표준대수자화보호계통방어연건공인고장적요구이급설치다양화구동방안적요구,재고필TXS원유계통가구적기출상,논술료전만수자화전설안전설시다양화구동방안대표준적괄응성。
The using of digital I&C protection system in nuclear power plant shows the advantages of digital systems, but also bring forward the concerns about software common cause failure. How to defense the software common cause failure in digital protection system is an important issue in the nuclear safety review of new projects. In order to prevent loss of trigger signal of Engineered Safety Features Actuation System(ESFAS)due to software fault, we set up a diversity system (DAS, also named MASS, means manual actuation standby system ) which is a manual hardware system and bypass the computerized system. This essay outline the requirements of the defending the software common cause failure and set of diversity actuation method, describes the applicability of the diversity system in Tianwan to the standards on the basis of original TXS architecture.