Integration technique of digital I&C replacement and its Critical Digital Review procedure

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• 作者：Hui-Wen Huang^a ; ^{hwhwang@iner.gov.tw} ; Wen-Long Yang^b
• 关键词：Critical Digital Review ; Digital I&C replacement ; Failure Mode and Effects Analysis
• 刊名：Annals of Nuclear Energy
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：51
• 期：Complete
• 页码：146-155
• 全文大小：615 K

文摘

Institute of Nuclear Energy Research (INER) developed a digital Instrumentation and Control (I&C) replacement integration technique on the basis of requirement of the three existing nuclear power plants (NPPs), which are Chin-Shan (CS) NPP, Kuo-Sheng (KS) NPP, and Maanshan (MS) NPP, in Taiwan, and also developed the related Critical Digital Review (CDR) procedure.

The digital I&C replacement integration technique includes: (1) Establishment of Nuclear Power Plant Digital Replacement Integration Guideline, (2) Preliminary Investigation on I&C System Digitalization, (3) Evaluation on I&C System Digitalization, and (4) Establishment of I&C System Digitalization Architectures. These works can be a reference for performing I&C system digital replacement integration of the three existing NPPs of Taiwan Power Company (TPC).

A CDR is the review for a critical system digital I&C replacement. The major reference of this procedure is ¡°Handbook for Evaluating Critical Digital Equipment and Systems¡± which was published by the Electric Power Research Institute (EPRI). With this document, INER developed a TPC-specific CDR procedure. Currently, CDR becomes one of the policies for digital I&C replacement in TPC. The contents of this CDR procedure include: Scope, Responsibility, Operation Procedure, Operation Flow Chart, CDR review items. The CDR review items include the comparison of the design change, Software Verification and Validation (SV&V), Failure Mode and Effects Analysis (FMEA), Evaluation of Diversity and Defense-in-depth (D3), Evaluation of Watchdog Timer, Evaluation of Electromagnetic Compatibility (EMC), Evaluation of Grounding for System/Component, Seismic Evaluation, Witness and Inspection, Lessons Learnt from the Digital I&C Failure Events. A solid review can assure the quality of the digital I&C system replacement.