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IEC 61508和IEC 61511为那些涉及在危险的与安全相关的环境下运营,同时想证明自身在功能安全管理方面有合规能力和资质的企业设立了一个全球通用的标准。本文是功能安全手册的第三部分,它介绍了系统集成商采用的安全生命周期模型的详细内容。该功能安全模型对应于IEC 61508的第9阶段和IEC 61511的第4阶段中的逻辑解算器子系统。本文描述了安全生命周期中的关键流程和应交付的内容,以及安全生命周期项目的关键活动和功能安全评估-后者的活动通常不易为人理解,或为安全团体所使用,但它们在确保达到功能安全时是必不可少的。
IEC 61508 and IEC 61511 set a worldwide standard for businesses involved in hazardous safety-related environments while at the same time wanting to demonstrate their compliance and qualifications in functional safety management. This article is the third in a functional safety manual that walks you through the details of the safety lifecycle model used by system integrators. This functional safety model corresponds to the logic solver subsystem in phase 9 of IEC 61508 and phase 4 of IEC 61511. This article describes the key processes and deliverables in the security life cycle, as well as the key activities and functional safety assessments of the life-cycle projects - the latter activities are often not easily understood or used by security groups, Functional safety is essential.