核设施.对安全重要的仪表系统.事故和事故后条件下的辐射监测.第3部分:连续高范围区域伽马监测设备

[中文适用范围]： 本部分IEC 60951为核设施中用于事故和事故后条件的连续高范围区域伽马监测设备的设计原则和性能标准提供了通用指南。本文件将事故条件分类为设计基准事故(DBA)和设计扩展条件(DEC)，包括严重事故(SA)。 IEC 60951-1中给出了技术特性、测试程序、辐射特性、电气、机械和环境特性的通用要求。除非另有说明，这些要求适用于本文件。 本文件的目的是为核设施在事故条件和事故后条件下对设施内辐射进行连续高范围区域伽马监测的设备制定通用要求。 本文件适用于在事故期间和事故后用于监测高水平伽马辐射的安装剂量率计。它涵盖旨在各向同性地测量由80 keV至7 MeV能量伽马辐射引起的空气比释动能、环境剂量或其他暴露量的设备。该设备主要用于核设施安全目的。 用于应急目的的便携式仪器和用于在正常运行期间连续确定工作区域放射情况的安装区域辐射监测器属于IEC 60532的范围。 [外文原描述]： IEC 60951-3:2022 provides general guidance on the design principles and performance criteria for equipment for continuous high range area gamma monitoring in nuclear facilities for accident and post-accident conditions. This document categorizes accident conditions into design basis accidents (DBA) and design extension conditions (DEC), including severe accident (SA). The purpose of this document is to lay down general requirements for equipment for continuous high range area gamma monitoring of radiation within the facility during and after accident conditions in nuclear facilities. This document is applicable to installed dose rate meters that are used to monitor high levels of gamma radiation during and after an accident. 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. This standard is to be read in conjunction with IEC 60951-1 .