GB/T 31835-2015 in English

《GB/T 31835-2015用于探测与报警放射性材料的袖珍式个人辐射仪》由TC30（全国核仪器仪表标准化技术委员会）归口，TC30SC3（全国核仪器仪表标准化技术委员会辐射防护仪器分会）执行，主管部门为国家标准化管理委员会。
本标准规定了用于探测与报警放射性材料的袖珍式个人辐射仪（PRD）的设计、功能准则、性能要求和试验方法。
本标准适用于人体佩戴的袖珍式个人辐射仪。PRD用于探测和指示贯穿电离辐射（包括光子和/或中子）的存在和大概的量级，警告用户有明显高于当地平均本底水平的放射源存在，但不用于提供剂量当量率的测量。 　
本标准不适用于GB/T 4835.1-2012、IEC 61526:2010涉及的辐射防护仪器的性能。 　　
当PRD用于其他条件而不是佩戴在人体上时，其有关中子的性能可能降低。

Scope

This standard specifies the design, functional criteria, performance requirements and test methods for pocket personal radiation devices (PRDs) for the detection and alarm of radioactive materials. This standard applies to pocket-sized personal radiometers worn on the human body. PRD is used to detect and indicate the presence and approximate magnitude of penetrating ionizing radiation (including photons and/or neutrons), and to warn users of the presence of radioactive sources significantly higher than the local average background level, but not to provide dose equivalent rates Measurement. This standard does not apply to the performance of radiation protection instruments involved in GB/T 4835.1-2012 and IEC 61526:2010. When a PRD is used in other conditions than when worn on the human body, its neutron-related performance may be reduced.