首页> 外文会议>International conference on nuclear engineering >APPROACH FOR THE EVALUATION OF THE IMPACT OF POTENTIAL SOFTWARE FAILURES IN SOFTWARE-BASED INSTRUMENTATION AND CONTROL (IC) EQUIPMENT IN NUCLEAR POWER PLANTS
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APPROACH FOR THE EVALUATION OF THE IMPACT OF POTENTIAL SOFTWARE FAILURES IN SOFTWARE-BASED INSTRUMENTATION AND CONTROL (IC) EQUIPMENT IN NUCLEAR POWER PLANTS

机译:在核电厂中基于软件的仪表和控制(I&C)设备中潜在软件故障的影响评估方法

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In this paper we present an approach for the evaluation and assessment of the impact of software failures in software-based I&C systems of NPPs. The proposed two-step approach includes at the first step the identification of software failure modes on the basis of review of operating experience gained with software-based I&C systems and equipment. All probable software failures in software-based I&C systems should be identified and classified according to e. g. the concerned system, the observed software failure mode and to their actual and potential safety relevance. In a second step an evaluation of the potential impact of identified safety relevant software failure modes in a software-based I&C system shall be performed. The evaluation shall be done by means of a failure mode and effects analysis (FMEA) using a generic model of the software-based I&C system, i.e. software failure modes are postulated in the I&C system and their potential safety-relevant impact is analyzed.
机译:在本文中,我们提出了一种评估和评估基于NPP的基于软件的I&C系统中软件故障影响的方法。提议的两步方法包括在第一步中,基于对基于软件的I&C系统和设备获得的操作经验的回顾,确定软件故障模式。基于软件的I&C系统中所有可能的软件故障都应根据e进行识别和分类。 G。有关系统,观察到的软件故障模式及其与实际和潜在的安全性有关。在第二步中,应对基于软件的I&C系统中已识别的与安全相关的软件故障模式的潜在影响进行评估。评估应使用基于软件的I&C系统的通用模型,通过故障模式和影响分析(FMEA)进行,即在I&C系统中假设软件故障模式,并分析其潜在的与安全相关的影响。

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