1.1 本规程涵盖液体、污泥或固体废物材料中高于环境背景水平或用户定义标准的α-、β-和γ辐射的筛选，或两者兼而有之。 1.2 本规程旨在作为一种总体筛选方法，用于确定液体、污泥或固体废物中是否存在放射性物质。它的目的不是取代更复杂的定量分析技术，而是为被禁止处理放射性废物的设施提供一种快速筛查样本放射性高于环境背景水平或用户定义标准或两者兼有的方法。 1.3 根据数据质量目标或预期用途，这种做法可能适合也可能不适合现场评估和补救活动等应用。 1.4 以国际单位制表示的数值应视为标准。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 大多数废物处理或使用单位禁止处理含有放射性物质的废物。该实践为用户提供了一种快速方法，用于在用户确定的水平上筛选废料是否存在放射性，该水平考虑了背景辐射和筛选方法的预期用途。 对这些设施来说，能够验证发电机提供的辐射信息并满足工人的健康和安全需求是很重要的。

1.1 This practice covers the screening for α–, β–, and γ radiation above ambient background levels or user-defined criteria, or both, in liquid, sludge, or solid waste materials. 1.2 This practice is intended to be a gross screening method for determining the presence or absence of radioactive materials in liquid, sludge, or solid waste materials. It is not intended to replace more sophisticated quantitative analytical techniques, but to provide a method for rapidly screening samples for radioactivity above ambient background levels or user-defined criteria, or both, for facilities prohibited from handling radioactive waste. 1.3 This practice may or may not be suitable for applications such as site assessments and remediation activities, depending on the data quality objectives or intended use. 1.4 The values stated in SI units are to be regarded as the standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Most facilities disposing or using waste materials are prohibited from handling wastes that contain radioactive materials. This practice provides the user a rapid method for screening waste material for the presence or absence of radioactivity at user-established levels that consider background radiation and the intended use of the screening method. It is important to these facilities to be able to verify generator-supplied information in regard to radiation and to meet worker health and safety needs.