1.1 本试验方法建立了用于核电厂涂层服务等级I和II应用的涂层和衬里耐化学性评估程序。 1.2 本试验方法旨在用作筛选试验，以评估钢和混凝土基底上的涂层和衬里。 1.3 该测试方法针对两个暴露间隔: (1) 短期（通常为5天）:此类暴露主要适用于暴露于化学品飞溅或泄漏的涂层。 (2) 长期（通常为180天）:此类暴露主要适用于暴露于连续或接近连续化学浸泡的衬里。 1.4 以英寸磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 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====== 3.1 中所述的衬里试验 6.2 可用于评估核电站涂层服务等级I和II应用中使用的储罐、容器和类似设施的衬里表面涂层系统的耐化学性特性。对于核电厂三级水浸涂层应用中衬里的评估，使用指南中的试验方法和指南 天7230 . 3.2 中所述的具体耐化学性测试 6.1 取决于使用条件的相对严重程度。应指定要使用的特定化学试剂，以反映预期的使用条件。 3.3 根据用户的判断，所提出的方法也可用于评估其他类型发电厂或其他工业服务中的涂层和衬里。

1.1 This test method establishes procedures for the evaluation of the chemical resistance of coatings and linings for use in Coating Service Level I and II applications in nuclear power plants. 1.2 This test method is intended to be used as a screening test to evaluate coatings and linings on steel and concrete substrates. 1.3 This test method addresses two exposure intervals: (1) Short Term (Typically 5 days): Such exposures are primarily applicable for coatings exposed to chemical splash or spill. (2) Long Term (Typically 180 days): Such exposures are primarily applicable for linings exposed to continuous or near-continuous chemical immersion. 1.4 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. 1.5 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 ====== 3.1 The lining test described in 6.2 may be used to evaluate the chemical resistance characteristics of coating systems for lining surfaces of tanks, vessels and similar facilities used in Coating Service Level I and II applications in a nuclear power plant. For the evaluation of linings in Coating Service Level III water immersion applications in nuclear power plants use the test methods and guidance found in Guide D7230 . 3.2 The specific chemical resistance tests described in 6.1 are dependent upon the relative severity of the service conditions. The specific chemical reagents to be used shall be specified to reflect the intended service conditions. 3.3 At the discretion of the user, the methods presented may also be used to evaluate coatings and linings for applications in other types of power plants or other industrial services.