对火灾试验的反应 墙系统的平行板试验方法 热释放和烟雾产生的测量

[中文适用范围]： 本文件规定了一种用于测量墙体系统的热释放率(HRR)和烟雾产生率(SPR)的大规模火灾测试方法。本文档涵盖的火灾场景代表了来自外墙或内墙构造的靠近墙壁或角落位置的严重火灾。定义了一个严重的火灾场景，该场景对墙体系统施加了大约100 kW/m2的热通量。这些包括外部火灾场景，如垃圾箱、阳台存储火灾和源自建筑物外部的车辆火灾。由未喷洒或喷洒不足的可燃存储引起的火灾，如仓库和制造场所，代表了严重内部火灾的几个例子。 本文件根据ISO 24473测量HRR和SPR。本文件还提供了由保险业开发并用于风险评估的热释放和烟雾产生性能限制的指南。 该测试方法不适用于火灾起始于外墙系统的空气腔（如果存在）的场景。该测试方法不包含窗口结构，因此不适用于后闪火灾场景中由未充分保护的窗口开口引起的火灾蔓延危险。 [外文原描述]： This document specifies a large-scale fire test method for measuring the heat release rate (HRR) and the smoke-production rate (SPR) of wall systems. The fire scenario covered in this document is representative of severe fires originating in near wall or corner locations of an exterior or interior wall construction. A severe fire scenario is defined that imparts a heat flux on the order of 100 kW/m 2 to the wall systems. These include exterior fire scenarios such as dumpster, balcony storage fires, and vehicle fires originating outside buildings. Fires caused by combustible storage inside unsprinklered or inadequately sprinklered occupancies, such as warehouse and manufacturing occupancies, represent a few examples of severe interior fires. This document measures the HRR and SPR in accordance with ISO 24473. This document also provides guidelines for heat release and smoke production performance limits, developed and used for risk evaluation by the insurance industry. The test method is not applicable to scenarios where a fire initiates within an air cavity, if present, of an exterior wall system. The test method does not incorporate a window structure and is therefore not applicable to fire spread hazards resulting from inadequately protected window openings in a post-flashover fire scenario.