ISO 6944-2:2009建立了一种测试方法，要求厨房抽气管道提供耐火性。这些要求旨在当风管内发生火灾时，限制火灾从风管蔓延，并在风管周围区域发生火灾时，评估风管的结构完整性。

ISO 6944-2:2009 establishes a method of test in which kitchen extract ducts are required to provide fire resistance. The requirements are intended to limit the spread of fire from the duct when a fire occurs within the duct and assesses the structural integrity of the duct when a fire occurs in the area surrounding the duct.