IEC 61069-5:20 16规定了基于IEC 61069-1的基本概念和IEC 61069-2的方法学评估基本控制系统（BCS）可靠性的详细方法，定义了可靠性属性的基本分类，描述了影响可靠性的因素以及评估可靠性时需要考虑的因素，并提供了从一组选项（带参考）中选择用于评估可靠性的技术的指导。这第二版取消并取代了1994年出版的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: -重组IEC 61069-5:19 94的材料，使整套标准更有条理和一致； -IEC TS 62603-1已纳入本版。

IEC 61069-5:2016 specifies the detailed method of the assessment of dependability of a basic control system (BCS) based on the basic concepts of IEC 61069-1 and methodology of IEC 61069-2, defines basic categorization of dependability properties, describes the factors that influence dependability and which need to be taken into account when evaluating dependability, and provides guidance in selecting techniques from a set of options (with references) for evaluating the dependability. This second edition cancels and replaces the first edition published in 1994. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- reorganization of the material of IEC 61069-5:1994 to make the overall set of standards more organized and consistent;
- IEC TS 62603-1 has been incorporated into this edition.