【国外标准】 Standard Practice for Preparation of Fixed Radiological/Surrogate Contamination on Porous Test Coupon Surfaces for Evaluation of Decontamination Techniques

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.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.