本标准提供了针对排放到环境中的废水中放射性的连续监测和量化的仪器选择建议。考虑的排出流可能单独或组合含有放射性气体、液体、颗粒或溶解固体。本标准规定了检测能力、物理和操作极限、可靠性和校准要求，并规定了废水监测仪器的最低性能要求。 除非另有规定，本标准适用于 到整个系统。本标准仅适用于包括异常释放在内的常规操作期间的监控。 需要额外性能的紧急情况是另一个考虑事项。 本标准范围之外的还有样品提取和实验室分析，通常用于监测器校准和实验室分析之间的相互比较，以及用于环境监测或过程控制等连续监测仪器的其他应用。 ANSI N13中介绍了取样技术。1-1969，《核设施中气载放射性物质采样指南》

This standard provides recommendations for the selection of instrumentation specific to the continuous monitoring and quantification of radioactivity in effluents released to the environment. The effluent streams considered may contain radioactive gases, liquids, particulates, or dissolved solids singly or in combination. This standard specifies detection capabilities, physical and operating limits, reliability, and calibration requirements and sets forth minimum performance requirements for effluent monitoring instrumentation. Unless otherwise specified, the criteria herein refer to the total system. This standard applies only to monitoring during routine operation that includes abnormal releases. Emergency situations, where additional performance capability will be required, are a matter of separate consideration. Also outside the scope of this standard are sample extraction and laboratory analyses, normally used for inter comparison between monitor calibrations and laboratory analyses, and other applications for continuous monitoring instrumentation such as environmental monitoring or process control. Sampling techniques are covered in ANSI N13.1-1969, Guide to Sampling Airborne Radioactive Materials in Nuclear Facilities