标准摘要
[中文适用范围]: IEC 61508 的这一部分提供了以下信息: – 风险的基本概念以及风险与安全完整性的关系(参见附录 A); – 能够确定E/E/PE安全相关系统的安全完整性水平的多种方法(见附件C、D、E、F和G)。所选择的方法将取决于应用领域和所考虑的具体情况。附件 C、D、E、F 和 G 说明了定量和定性方法,并已进行简化以说明基本原则。这些附件是为了说明一些方法的一般原理,但并未提供明确的说明。那些打算应用这些附件中指出的方法的人应查阅所引用的源材料。注:有关附件 B 和 E 中所示方法的更多信息,请参阅参考文献中的参考文献 [5] 和 [8]。另请参阅参考文献中的参考文献 [6],了解其他方法的描述。1.2 IEC 61508-1、IEC 61508-2、IEC 61508-3 和 IEC 61508-4 是基本安全出版物,尽管此状态不适用于低复杂性 E/E/PE 安全相关系统(参见 3.4.1)。 IEC 61508-4 的第 3 条)。作为基本安全出版物,它们旨在供技术委员会根据 IEC 指南 104 和 ISO/IEC 指南 51 中包含的原则制定标准。 IEC 61508-1、IEC 61508-2、IEC 61508-3 和IEC 61508-4 也可用作独立出版物。本国际标准的水平安全功能不适用于符合IEC 60601系列的医疗设备。 [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 61508-5:2010 provides information on the underlying concepts of risk and the relationship of risk to safety integrity (see Annex A); a number of methods that will enable the safety integrity levels for the E/E/PE safety-related systems to be determined (see Annexes C, D, E, F and G). The method selected will depend upon the application sector and the specific circumstances under consideration. Annexes C, D, E, F and G illustrate quantitative and qualitative approaches and have been simplified in order to illustrate the underlying principles. These annexes have been included to illustrate the general principles of a number of methods but do not provide a definitive account. Those intending to apply the methods indicated in these annexes should consult the source material referenced. 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. This publication is of high relevance for Smart Grid.
英文名称Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels (see Functional Safety and IEC 61508)