IEC TR 63039:2016（E）为由电工项目组成的系统提供了概率风险分析（以下简称风险分析）指南，适用于（但不限于）所有进行风险分析的电工行业。本文件从风险分析的角度讨论了以下主题: -界定基本术语和概念； -指定事件的类型； -对事件的发生进行分类； -描述ETA、FTA和马尔可夫技术的修改符号和图形表示方法的使用，以将那些修改的技术互补地应用于复杂系统； -建议处理复杂系统的事件频率/速率的方法； -基于风险监测建议估计事件频率/速率的方法；-提供说明性和实际示例。有关涵盖的事件和相关风险的更多信息，请参考文档的简介和范围。本文件从概率风险分析的角度定义了事件的基本属性，并使用可靠性相关技术来分析最终事件的发生，从而导致风险的最终后果可能出现的最终状态。 关键词:概率风险分析、不确定性影响、事件及相关风险

IEC TR 63039:2016(E) provides guidance on probabilistic risk analysis (hereafter referred to as risk analysis) for the systems composed of electrotechnical items and is applicable (but not limited) to all electrotechnical industries where risk analyses are performed. This document deals with the following topics from the perspective of risk analysis:
- defining the essential terms and concepts;
- specifying the types of events;
- classifying the occurrences of events;
- describing the usage of modified symbols and methods of graphical representation for ETA, FTA and Markov techniques for applying those modified techniques complementarily to the complex systems;
- suggesting ways to handle the event frequency/rate of complex systems;
- suggesting ways to estimate the event frequency/rate based on risk monitoring;
- providing illustrative and practical examples. Please refer to the Introduction and Scope of the document for addition information regarding the events covered by and associated risks. This document defines the basic properties of events from the perspective of probabilistic risk analysis and use of dependability-related techniques for the analysis of occurrence of the final event that results in a final state in which the final consequences of a risk may appear. Keywords: probabilistic risk analysis, effects of uncertainty, events and associated risks