ISO 23935:2006规定了适用于所有流体系统部件的试验要求，这些部件位于指定为“防火区”的区域内，且其建造应满足规定的最低耐火等级。 它与在指定防火区外承受火灾无关，也与可燃性要求无关，或与来自燃烧室的火焰引起的条件无关。

ISO 23935:2006 specifies the requirements for tests which may be applied to all fluid system components located in zones designated as "fire zones" and built to satisfy the minimum level specified for withstanding fire. It does not relate to withstanding fire outside designated fire zones, nor to flammability requirements, or to those conditions induced by the flame coming from the combustion chamber.