1.1 本规程旨在为模拟与评估去污过程一致的放射性污染提供依据。所述方法在多孔表面上提供“固定型”放射性或替代污染；这些方法产生的表面污染不易通过刷洗或用水冲洗去除。 1.2 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.3 本规程主要用于多孔表面，如混凝土、大理石、花岗岩、水泥浆、砖、瓷砖、沥青、乙烯基地砖、乳胶漆石膏墙板和聚氨酯涂层木材。 虽然可以使用类似的方法，但未涉及非多孔基质的制备。 1.4 按照美国职业安全与健康管理局（OSHA）的定义，化学模拟物在正常条件下的制备、应用或移除过程中不得包含或产生有毒副产品。应提供安全数据表，以便选择合适的PPE。 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）。本标准的用户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（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本实践提供了一个协议，用于比较不同的去污技术与标准污染机制，并分析后续的去污因子/效率。 5.2 本规程的使用规定了制备表面含有已知量固定放射性或替代污染物的试样。 5.3 描述了标准试样，并在程序中提供了潜在喷涂设备、污染物和污染溶液的列表。 5.4 该方法描述了符合美国能源部和美国环境保护局（之前）进行的测试要求的污染模拟过程。

1.1 This practice is intended to provide a basis for simulating radioactive contamination consistent with processes used to evaluate decontamination. The methods described provide a “fixed-type” radiological or surrogate contamination on porous surfaces; these methods provide a surface contamination that is not easily removed by brushing or flushing with water. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3 This practice is intended to be practiced primarily on porous surfaces such as concrete, marble, granite, grout, brick, tile, asphalt, vinyl floor tile, latex painted gypsum wall board and polyurethane coated wood. Preparation of non-porous substrates is not addressed, although similar methodology may be used. 1.4 The chemical simulants shall not include nor generate toxic by-products as defined by U.S. Occupational Safety and Health Administration (OSHA) during preparation, application, or removal under normal conditions. A Safety Data Sheet shall be provided so that appropriate PPE can be selected. 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 This practice provides a protocol to compare different decontamination technologies with a standard contamination mechanism and analysis of subsequent decontamination factors/efficiencies. 5.2 The use of this practice provides for the preparation of test coupons with a known amount of fixed radiological or surrogate contaminant on the surface. 5.3 A standard test coupon is described and a list of potential spray equipment, contaminants, and contaminating solutions is provided within the procedure. 5.4 This method describes a contamination simulation process that meets the requirements of testing performed (previously) by the U.S. Department of Energy and U.S. Environmental Protection Agency.