1.1 这是一个火灾测试响应标准。 1.2 本试验方法旨在评估在规定的火灾暴露条件下，墙壁或天花板材料和组件或两者对室内火灾增长的贡献。该方法不用于评估组件的耐火性或源自墙壁组件的火灾。该方法提供了一种评估热障在限制墙壁组件中的可燃材料对房间火灾中的火灾增长的贡献方面的有效性的手段。 1.3 该测试方法模拟了一个2420毫米x 3630毫米（8英尺x 12英尺）房间的角落中的火灾，该测试方法提供了一种评估特定墙壁和天花板材料或组件在外壳内以相同关系一起使用时的相对性能的方法，并模拟了它们的使用方式。1.4 本试验方法旨在评价使用指定点火源的表面产品对火灾增长的贡献。然而，应该注意的是，点火源的类型、位置和热量输出将极大地影响火灾的增长。对于许多常见的饰面材料，本方法中规定的点火源的热暴露条件将导致20分钟内的闪络，特别是如果样品安装在墙壁和天花板上（标准配置）。 1.5 该测试方法提供了一种评估墙壁和天花板饰面材料和组件的手段，包括面板、瓷砖、木板、喷涂或刷涂等。本试验方法不用于评价地板材料或家具。 1.6 本方法应与指南结合使用 E603 ，其中包括仪器和各种参数的一般影响，以及指南 E2067 ，涉及全尺寸耗氧量热法。 1.7 以SI单位表示的值将被视为标准值。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.8 本标准的正文参考了提供解释性信息的注释和脚注。这些注释和脚注（不包括图中的注释和脚注）不应被视为标准的要求。 1.9 本标准用于测量和描述材料、产品或组件在受控条件下对热和火焰的响应，但其本身并不包含在实际火灾条件下对材料、产品或组件进行火灾危险或火灾风险评估所需的所有因素。1.10 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。 1.11 火灾测试本质上是危险的。在进行这些试验时，应对人员和财产采取充分的安全措施。 1.12 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 该防火试验适用于描述在外壳中特定火灾暴露条件下评估墙壁和天花板材料、产品或系统时的某些防火性能特征。该测试指示房间内火灾增长的最大程度、热量释放的速率，以及如果发生的话，闪络的时间以及闪络后火焰延伸到门口以外的时间。它确定了在模拟的特定条件下，墙壁和天花板材料或组件对房间内火灾增长的贡献程度，以及火灾蔓延到房间以外的可能性。它不测量房间内容的贡献。（见 附录X1 ，评论。） 5.2 当达到下列任意两个条件时，应认为发生了闪络:(a) 放热率超过1兆瓦。 (b) 地板的热通量超过20 kW/m 2 . (c) 上层平均温度超过600℃。 (d) 火焰从门口冒出来。 (e) 地板上的纸靶会自动点燃。 5.2.1 闪络时间应为从试验开始到达到第二个条件的时间。 5.3 火势蔓延到房间内远离点火源的其他物体的可能性通过以下测量来评估:（ a ）入射到地板中心的总热通量，以及（ b )房间中的特征上层气体温度。 5.4 通过测量火的热释放速率来评估火蔓延到起源房间之外的物体的可能性。 5.5 测量一氧化碳、二氧化碳和可见烟雾的产生速率。5.6 通过全彩色照片记录直观地记录试样的整体性能。完整防火试验的录像是摄影记录的一种可接受的替代方法。这种记录显示了试样的每个区域何时卷入火灾。 5.7 在该程序中，样品经受一组特定的实验室火灾试验暴露条件。如果替代不同的测试条件或改变预期的最终使用条件，则不知道是否可以通过使用该测试来预测测量的性能特征的变化。因此，结果仅在本程序中描述的火灾试验暴露条件下严格有效。

1.1 This is a fire-test-response standard. 1.2 This test method is intended to evaluate, under specified fire-exposure conditions, the contribution to room fire growth provided by wall or ceiling materials and assemblies, or both. The method is not intended to evaluate the fire endurance of assemblies or fires originating in the wall assembly. The method provides a means to evaluate the effectiveness of thermal barriers in restricting the contribution of combustible materials in the wall assembly to fire growth in a room fire. 1.3 This test method, simulating a fire in the corner of a 2420 mm by 3630 mm (8 ft by 12 ft) room containing a single open doorway, provides a means to evaluate the relative performance of specified wall and ceiling materials or assemblies when they are used together in the same relationship within an enclosure, and simulating the manner in which they will be used. 1.4 This test method is intended to evaluate the contribution to fire growth provided by a surface product using a specified ignition source. It shall, however, be noted that the type, position and heat output of the ignition source will considerably influence fire growth. The thermal exposure conditions from the ignition source specified in this method will result in flashover during the 20 min duration for many common finish materials, in particular if specimens are mounted on the walls and the ceiling (standard configuration). 1.5 This test method provides a means for evaluating wall and ceiling finish materials and assemblies, including panels, tiles, boards, sprayed or brushed coatings, etc. This test method is not intended to evaluate flooring materials or furnishings. 1.6 This method shall be used in conjunction with Guide E603 , which covers instrumentation and the general effect of various parameters, and Guide E2067 , which deals with full-scale oxygen consumption calorimetry. 1.7 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. 1.8 The text of this standard references notes and footnotes which provide explanatory information. These notes and footnotes (excluding those in figures) shall not be considered as requirements of the standard. 1.9 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire-hazard or fire-risk assessment of the materials, products, or assemblies under actual fire conditions. 1.10 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. 1.11 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 1.12 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 ====== 5.1 This fire test is applicable to a description of certain fire performance characteristics in appraising wall and ceiling materials, products, or systems under specified fire-exposure conditions in an enclosure. The test indicates the maximum extent of fire growth in a room, the rate of heat release, and if they occur, the time to flashover, and the time to flame extension beyond the doorway following flashover. It determines the extent to which the wall and ceiling materials or assemblies contribute to fire growth in a room and the potential for fire spread beyond the room, under the particular conditions simulated. It does not measure the contribution of the room contents. (See Appendix X1 , Commentary.) 5.2 Flashover shall be considered to have occurred when any two of the following conditions have been attained: (a) Heat release rate exceeds 1 MW. (b) Heat flux at the floor exceeds 20 kW/m 2 . (c) Average upper layer temperature exceeds 600 °C. (d) Flames exit doorway. (e) A paper target on the floor auto-ignites. 5.2.1 Time to flashover shall be the time from start of test until the second condition has been attained. 5.3 The potential for the spread of fire to other objects in the room, remote from the ignition source, is evaluated by measurements of: ( a ) the total heat flux incident on the center of the floor, and ( b ) a characteristic upper level gas temperature in the room. 5.4 The potential for the spread of fire to objects outside the room of origin is evaluated by the measurement of the rate of heat release of the fire. 5.5 Measurements of the rate of production of carbon monoxide, carbon dioxide, and visible smoke are taken. 5.6 The overall performance of the test specimen is visually documented by full-color photographic records. Video taping of the complete fire test is an acceptable alternative to the photographic record. Such records show when each area of the test specimen becomes involved in the fire. 5.7 In this procedure, the specimens are subjected to a specific set of laboratory fire test exposure conditions. If different test conditions are substituted or the anticipated end-use conditions are changed, it is not known whether it is possible by use of this test to predict changes in the performance characteristics measured. Therefore, the results are strictly valid only for the fire test exposure conditions described in this procedure.