标准摘要
[中文适用范围]: 本国际标准适用于设计用于测量中子辐射场中的环境剂量当量(率)的组件,其中中子能量低于 20 MeV@,并且至少包括: a) 检测组件@,例如@由热中子探测器探头和围绕探测器布置的中子慢化和吸收介质组成; b) 带有测量量显示器的测量组件,可以将其与检测器合并成单个组件或通过柔性电缆连接到检测器。该标准涵盖能量范围高达 20 MeV 的仪器。如果仪器还提供中子剂量指示,则应满足本标准规定的中子剂量要求。本标准没有规定脉冲辐射场中组件性能要求的测试。可以理解的是,为满足该标准而设计的组件可能不适合在这些领域中使用。本标准的目的是规定中子环境剂量当量(率)米@的性能特征要求,并规定测试方法以确定是否符合本标准。本标准规定了一般特性@一般测试程序@辐射特性@电气@机械@安全和环境特性@以及鉴定证书(见13.2)。还规定了配备报警装置的中子环境剂量当量(率)计@的报警性能的要求和测试程序。注:环境剂量当量(速率)计对中子的响应取决于能量,并且可能与单位有很大偏差。然而,实际中子场中的响应是这样的,不同能量范围内的响应偏差往往会相互抵消。因此,现实领域中的反应通常更接近统一。 ISO 12789 指定了适合测试此类(速率)计的适当广谱中子源列表。例如,@ ISO 12789 中的模拟工作场所中子场可以通过制造商和购买者之间的协议指定,以便在明确定义光谱环境时适合进行测试。 [外文原描述]: IEC 61005:2014 specifies requirements for the performance characteristics of neutron ambient dose equivalent (rate) meters, and prescribes the methods of testing in order to determine compliance with this standard. This standard specifies general characteristics, general test procedures, radiation characteristics, electrical, mechanical, safety and environmental characteristics, and also the identification certificate (see 13.2). Requirements and test procedures are also specified for the alarm performance of the neutron ambient dose equivalent (rate) meters, equipped with alarm provisions. This new edition includes the following significant technical changes with respect to the previous edition: - upper neutron energy of the instruments covered by the standard is increased to 20 MeV; - requirement for the variation of the relative response due to neutron energy is modified; - a clause for additivity of the indicated value (neutron dose/dose rate) is introduced; - environmental testing methods and requirements are referred to IEC 62706.
英文名称Radiation protection instrumentation - Neutron ambient dose equivalent (rate) meters