1.1 本防火测试响应标准提供了一个两步测试过程，用于确定天然圣诞树表面处理的有效性，以提高防火测试响应。为了使处理符合本标准，必须满足方法1和2的验收条件。 1.2 这些试验方法的目的是: 1.2.1 利用分离枝试验（方法1）筛选潜在的表面应用阻燃剂产品，并通过比较经处理和未经处理的小圣诞树枝在小型开放本生灯下的燃烧特性，确定其在限制火焰传播和持续燃烧方面的有效性- 燃烧器型火焰点火源，以及 1.2.2 使用全天然圣诞树（方法2），通过比较暴露于明火点火源时处理过的树木与未处理过的树木的热释放速率贡献，确定在分离枝试验（方法1）中发现有效的表面应用阻燃剂的有效性。 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 火灾测试本身就很危险。在进行这些测试时，应采取适当的人员和财产保护措施。 1.6 本标准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（不包括表和图中的注释和脚注）不应视为本标准的要求。 1.7 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 在过去的研究实验中，一些表面应用的阻燃剂化学物质改善了天然圣诞树的防火性能，而其他阻燃剂则无效，或对圣诞树的质量或燃烧特性产生不利影响。 这些方法旨在提供一个两步过程，以确定天然圣诞树表面处理的有效性。 4.2 天然树木的防火性能变化很大，因物种而异。这些方法的测试结果并不打算为任何天然或处理过的天然树木的绝对防火性能的判断提供数据，而是提供了一种比较处理过的和未处理过的树木防火性能的方法。 4.3 这些测试方法没有考虑添加到树上的装饰的影响。 4.4 对于试验方法1，只有弗雷泽杉木[ 南部香脂冷杉 （Pursh）Poi。]测试树木。虽然这是美国最常用的圣诞树之一，但其他树种的结果可能与该树种的结果不同。 4.5 对于试验方法2，大规模火灾试验，重要的是要尽可能一致地同时评估处理和未处理的树木样本，以获得足够的比较结果。 4.6 根据处理应用的均匀性，处理的性能会有所不同。 这种应用质量不是由这些测试方法决定的。

1.1 This fire-test-response standard provides a two-step testing process for determining the effectiveness of surface applied treatments for natural Christmas trees to improve fire test response. In order for a treatment to be considered compliant with this standard, the Conditions of Acceptance of both Methods 1 and 2 are to be met. 1.2 The purpose of these test methods is to: 1.2.1 Utilize a detached branch test (Method 1) to screen potential surface-applied fire retardant products and to determine their effectiveness in limiting the spread of flame and the continuation of flaming by comparing the burning characteristics of treated and untreated small Christmas tree branches subjected to a small open Bunsen-burner type flame ignition source, and 1.2.2 Use whole natural Christmas trees (Method 2) to determine the effectiveness of surface applied fire retardants found to be effective in the detached branch test (Method 1) through comparison of heat release rate contribution of treated trees as compared to untreated trees when subjected to an open flame ignition source. 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 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 1.6 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 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 In past research experiments, some surface applied fire retardant chemicals improved the fire performance characteristics of natural Christmas trees, whereas other retardants were not effective, or adversely affected tree quality or burning characteristics. These methods are intended to provide a two-step process to determine the effectiveness of surface applied treatments to natural Christmas trees. 4.2 The fire performance of natural trees is highly variable and varies from species to species. Test results from these methods do not intend to provide data for judgment on the absolute fire performance of any natural or treated natural tree, but rather provide a means for comparing the fire performance of treated versus untreated trees. 4.3 These test methods do not take into account the influence of decorations that are added to the tree. 4.4 For Test Method 1, only Fraser fir [ Abies fraseri (Pursh) Poi.] trees are tested. Although this is one of the most commonly used Christmas trees in the United States, it is possible that results for other tree species will differ from the results for this species. 4.5 For Test Method 2, Large Scale Fire Test, it is important that the treated and untreated tree specimens be evaluated consistently and as simultaneously as possible for adequate comparative results. 4.6 The performance of the treatment will vary depending on the uniformity of the application of the treatment. This quality of application is not determined by these test methods.