电气、电子、程序可控的电子安全相关系统的功能性安全.第2部分:电气、电子、程序可控的电子安全相关系统的要求

[中文适用范围]： IEC 61508 系列 a) 的这一部分仅在彻底理解 IEC 61508-1 后才能使用，该标准提供了实现功能安全的总体框架； b) 适用于 IEC 61508-1 定义的任何安全相关系统，该系统至少包含一个电气、电子或可编程电子元件； c) 适用于 E/E/PE 安全相关系统内的所有元件（包括传感器、执行器和操作员界面）； d) 规定如何细化按照IEC 61508-1制定的E/E/PE系统安全要求规范（包括E/E/PE系统安全功能要求规范和E/E/PE系统安全完整性要求规范） ），纳入E/E/PE系统设计要求规范； e) 规定了在 E/E/PE 安全相关系统的设计和制造过程中应用的活动要求（即建立 E/E/PE 系统安全生命周期模型），但软件除外，这在IEC 61508-3（见图 2 至 4）。这些要求包括应用根据安全完整性等级分级的技术和措施，以避免和控制故障和失效； f) 规定E/E/PE安全相关系统的安装、调试和最终安全验证所需的信息； g) 不适用于 E/E/PE 安全相关系统的操作和维护阶段——这在 IEC 61508-1 中进行了讨论——但是，IEC 61508-2 确实提供了所需信息和程序准备的要求由用户操作和维护 E/E/PE 安全相关系统； h) 规定对 E/E/PE 安全相关系统进行任何修改的组织应满足的要求； [外文原描述]： Looking for deeper insights? Check out IEC 61508:2010 CMV , which includes commented versions of Parts 1 to 7 of IEC 61508. These commented versions highlight the changes made from previous editions and provide explanations from a world-leading expert on the reasons behind the most significant changes. IEC 61508-2:2010 applies to any safety-related system, as defined by IEC 61508-1, that contains at least: - one electrical, electronic or programmable electronic element; - applies to all elements within an E/E/PE safety-related system; - specifies how to refine the E/E/PE system safety requirements specification, developed in accordance with IEC 61508-1, into the E/E/PE system design requirements specification; - specifies the requirements for activities that are to be applied during the design and manufacture of the E/E/PE safety-related systems except software, which is dealt with in IEC 61508-3. These requirements include the application of techniques and measures that: - are graded against the safety integrity level, for the avoidance of, and control of, faults and failures; - specifies the information necessary for carrying out the installation, commissioning and final safety validation of the E/E/PE safety-related system; - provides requirements for the preparation of information and procedures needed by the user for the operation and maintenance of the E/E/PE safety-related systems; - specifies requirements to be met by the organisation carrying out any modification of the E/E/PE safety-related systems. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. It has been subject to a thorough review and incorporates many comments received at the various revision stages. It has the status of a basic safety publication according to IEC Guide 104. This publication is of high relevance for Smart Grid.