本标准规定了各种类型仪器的基本性能参数，以及与反应堆设施假设严重事故相关的放射性核素释放监测的一般位置。本标准不规定哪些仪器或系统需要，也不考虑这些仪器的数量或特定位置。本标准也未涉及与核安全仪表相关的单一故障标准。就本标准而言，在评估辐射紧急情况时，主要考虑的是及时测量裂变产物，以便及时做出紧急决定。如果用于常规操作的仪器符合本文的标准，则无需复制这些仪器，以便配备单独的应急仪器。 两用仪器必须符合本标准的要求。

This standard defines, for various types of instrumentation, the essential performance parameters, and general placement for monitoring the release of radionuclides associated with a postulated serious accident at a reactor facility. This standard does not specify which of the instruments or systems are required nor does it consider the number or specific locations of such instruments. This standard also does not address single failure criteria associated with nuclear safety instrumentation. For the purpose of this standard, the predominant consideration in the assessment of radiation emergencies is the measurement of fission products promptly enough to permit timely emergency decisions to be made. Where instruments utilized for routine operations fulfilll the criteria herein, they need not be duplicated in order to have separate emergency instrumentation. Dual purpose instrumentation must meet the requirements of this standard.