1.1 本试验方法建立了在模拟DBA条件下评估保护涂层系统试样的程序。包括温度-压力测试的条件和设备的描述，以及样品制备、辐照、测试、检查、评估和记录的要求。 1.2 应考虑使用最坏情况下的条件（例如，表面处理、温度和压力曲线、辐照、喷雾化学、耐化学性等）进行测试，以减少因更改电厂事故计算、更改涂层选择等而需要的测试数量。 1.3 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 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。 1.5 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====== 4.1 本试验方法旨在提供统一试验，以确定在模拟DBA条件下轻水核设施一次安全壳内使用的涂层服务级别1涂层的适用性。本试验方法仅旨在证明在DBA条件下，涂层将保持完整，不会形成碎片，这可能会不可接受地损害工程安全系统的可操作性。 实际表面处理以及涂层材料的应用和固化与鉴定试验参数的偏差需要进行工程评估，以确定是否需要额外的试验。 4.2 由于不同的工厂对涂层条件有不同的公差水平，许可证持有人将根据单个工厂设计的安全系统的可操作性考虑制定适当验收标准的定义。 4.3 本标准的使用取决于具有被许可方可接受的质量保证计划的测试设施。

1.1 This test method establishes procedures for evaluating protective coating systems test specimens under simulated DBA conditions. Included are a description of conditions and apparatus for temperature-pressure testing, and requirements for preparing, irradiating, testing, examining, evaluating, and documenting the samples. 1.2 Consideration should be given to testing using worst case conditions (for example, surface preparation, temperature and pressure profile, irradiation, spray chemistry, chemical resistance, etc.) in an effort to reduce the number of tests required by changing plant accident calculations, changes in coating selection, etc. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 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. 1.5 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 ====== 4.1 This test method is designed to provide a uniform test to determine the suitability of Coating Service Level 1 coatings used inside primary containment of light-water nuclear facilities under simulated DBA conditions. This test method is intended only to demonstrate that under DBA conditions, the coatings will remain intact and not form debris which could unacceptably compromise the operability of engineered safety systems. Deviations in actual surface preparation and in application and curing of the coating materials from qualification test parameters require an engineering evaluation to determine if additional testing is required. 4.2 Since different plants have different tolerance levels for coating conditions, the definition of appropriate acceptance criteria is to be developed by the license holder based on individual plant engineered safety systems operability considerations. 4.3 Use of this standard is predicated on the testing facility having a quality assurance program acceptable to the licensee.