1.1 本规程通过在火灾响应试验评估之前暴露于加速的润湿、干燥或紫外线（UV）暴露循环或其组合来解决木制品阻燃处理的耐久性问题。描述了四种调节方法。 1.2 本规程适用于通过压力浸渍用阻燃化学品处理的木制品。 1.3 试样应采用试样的形式，或适合制成试样，如试验方法中所述 E84 , E108 ，以及 E1354 以及用于评估阻燃处理木制品防火性能的其他标准测试方法。 1.4 这些方法的文本引用了提供解释材料的注释和脚注。这些注释和脚注（不包括表格和图中的注释和脚注）不应被视为这些试验方法的要求。 1.5 以英寸-磅单位表示的值应被视为标准值。 括号中给出的值是对国际单位制的数学转换，仅供参考，不被视为标准值。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 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====== 4.1 本规程描述了将阻燃处理的木制品或组件暴露于受控加速风化或调节的不同方法。 4.2 调节模拟了浸出、干燥、温度的影响，以及两种方法中紫外线的影响。 4.3 方法A是测试用于外部应用的阻燃处理木材时通常为监管目的而指定的方法。

1.1 This practice addresses the durability of a fire-retardant treatment of wood products by exposure to accelerated cycles of wetting, drying, or ultraviolet (UV) exposure, or combination thereof, prior to evaluation by a fire response test. Four conditioning methods are described. 1.2 This practice is applicable to wood products that have been treated with fire-retardant chemicals by pressure impregnation. 1.3 The test specimens are to be in the form of, or suitable for fabrication into, test specimens, such as those described in Test Methods E84 , E108 , and E1354 and other standard test methods for evaluating the fire performance of fire-retardant-treated wood products. 1.4 The text of these methods references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of these test methods. 1.5 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. 1.6 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. 1.7 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 practice describes different methods of exposing fire-retardant-treated wood products or assemblies to controlled accelerated weathering or conditioning. 4.2 The conditioning simulates effects of leaching, drying, temperature, and, in two methods, UV light. 4.3 Method A is the method normally specified for regulatory purposes when testing fire-retardant-treated wood that is intended for exterior applications.