IEC 61322:2020 辐射防护仪器.能量为20毫伏至20毫伏的中子用安装的环境剂量当量率计警告和监测组件
标准编号：IEC 61322:2020
中文名称：辐射防护仪器.能量为20毫伏至20毫伏的中子用安装的环境剂量当量率计警告和监测组件
英文名称：Radiation protection instrumentation - Installed ambient dose equivalent rate meters, warning and monitoring assemblies for neutrons with energies from thermal to 20 MeV
发布日期：2020-01-10
标准范围
IEC 61322:2020适用于安装的剂量当量率计、警告组件和监测器，定义如下。它涵盖了旨在测量热和20兆电子伏之间能量区域中剂量当量率的中子辐射的设备，以达到辐射防护的目的。这种类型的组件通常被定义为区域辐射监测器。它们通常用于连续确定辐射场可能随时间变化的工作区域的辐射状况，例如核电站、粒子加速器、高活性实验室、燃料后处理厂等。，并在辐射场超出预定极限时提供警报。本文件中考虑的组件至少包括:探测器组件，其可以例如由探测器探针(用于热中子，诸如BF3比例计数器、3He比例计数器、6LiI(Tl)闪烁探测器等)组成。)和围绕检测器的缓和和吸收介质；处理组件，其可以装配到集中面板中，在警告组件和监视器的情况下，该处理组件提供能够激活警报或其他跳闸电路的信号输出和触点；或者，可以考虑当所有处理电子器件都放置在检测单元(所谓的“智能块”)内时的情况。在这种情况下，处理组件的功能将仅由指示、提供信号输出和触点组成。第二版取消并取代1994年出版的第一版。与上一版相比，该版本包括以下重大技术变化:本文件已更新，以考虑相关IEC标准IEC 60532:2010和IEC 61005:2014的要求。
IEC 61322:2020 applies to installed dose equivalent rate meters, warning assemblies and monitors, as defined below. It covers equipment intended to measure neutron radiation in dose equivalent rates in the energy region between thermal and 20 MeV for the purposes of radiation protection.
Assemblies of this type are commonly defined as area radiation monitors. They are normally employed to determine continuously the radiological situation in working areas in which the radiation field may change with time, for example, nuclear power plants, particle accelerators, high-activity laboratories, fuel reprocessing plants, etc., and provide alarms when the radiation field goes outside predetermined limits.
The assemblies considered in this document comprise at least:
- a detector assembly, which may, for example, consist of a detector probe (for thermal neutrons such as BF3 proportional counter, 3He proportional counter, 6LiI(Tl) scintillation detector, etc.) and a moderating and absorbing medium surrounding the detector;
- a processing assembly, which may be fitted into a centralized panel, which, in the case of warning assemblies and monitors, provides signal outputs and contacts capable of activating alarm or other trip circuits;
- alternatively, the case when all the processing electronics are placed within the detection unit (so called "smart blocks") may be considered. In this case the functions of the processing assembly will be composed of only the indication, the providing signal outputs and contacts.
- this document has been updated to take account of the requirements of the relevant IEC standards, IEC 60532:2010 and IEC 61005:2014.
标准预览图
