ISO 20902-1:2018规定了当暴露在纤维素或碳氢化合物池型火灾条件下时，测定防火系统分区元件耐火性的试验程序。它适用于非海上应用的分区元件，但适用于海上固定和移动装置。 当与公布的火灾试验标准结合使用时，获得的试验数据允许根据其在规定标准下的性能持续时间对分区元件进行后续分类。

ISO 20902-1:2018 specifies a test procedure for determining the fire resistance of divisional elements with a fire protection system, when exposed to cellulosic or hydrocarbon-pool type fire conditions. It is applicable to divisional elements intended for non-marine applications but suitable for offshore fixed and mobile installations. The test data obtained, when used in conjunction with published fire test standards, permit subsequent classification of the divisional elements based on the duration of their performance against specified criteria.