核设施.对安全重要的仪表系统.事故和事故后条件的辐射监测.第1部分:一般要求

[中文适用范围]： 本部分IEC 60951为核电站设施在事故设计基准事故（DBA）和设计扩展条件（DEC），包括严重事故（SA）期间和之后测量辐射和流体（气体排放物或液体）放射性水平的设备提供了设计原则和性能标准的通用指南。本文件仅限于用于连续监测设计基准事故（DBA）、设计扩展条件（DEC），包括严重事故（SA）和事故后条件下放射性的设备。 本文件的目的是规定强制性的一般要求，并提供可接受的方法示例，用于在轻水反应堆核电站设施内事故期间和事故后条件下连续监测放射性的设备。 它规定了上述设备的一般特性、通用测试程序、辐射、电气、安全和环境特性以及设备的识别和认证。如果该设备是核设施中连续辐射监测集中系统的一部分，则可能有其他与该系统相关的标准中的额外要求。 样本提取和实验室分析对于完整的排放监测计划至关重要，但不属于本文件的范围。 [外文原描述]： IEC 60951-1:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60951-1:2022 provides general guidance on the design principles and performance criteria for equipment to measure radiation and fluid (gaseous effluents or liquids) radioactivity levels at nuclear facilities during and after design basis accidents (DBA) and design extension conditions (DEC), including severe accident (SA). This document is limited to equipment for continuous monitoring of radioactivity in design basis accidents (DBA), design extension conditions (DEC), including severe accident (SA) and post-accident conditions. The purpose of this document is to lay down general requirements and give examples of acceptable methods for equipment for continuous monitoring of radioactivity within the facility during and after design basis accidents (DBA), design extension conditions (DEC), including severe accident (SA) in nuclear facilities. This third edition cancels and replaces the second edition published in 2009.The main technical changes with regard to the previous edition are as follows. - title modified. - to be consistent with the categorization of the accident condition. - to update the references to new standards published since the second edition. - to update the terms and definitions.