GB/T 803-1989 in English

《GB/T 803-1989空气中可燃气体爆炸指数的测定》由TC113（全国消防标准化技术委员会）归口，TC113SC1（全国消防标准化技术委员会基础标准分会）执行，主管部门为应急管理部。
本标准规定了在密闭容器内，可燃气体／空气混合气爆炸指数的测定方法，并给出用其他方法测定爆炸指数时应遵循的准则。本标准只适用于测定有限空间内可燃气体／空气混合气被点燃后的爆炸指数，并不适用于点燃混合气所必须的其他指数。如果按照本标准的实验操作没有点燃可燃气体／空气混合气，不能认为该混合气不会爆炸，应根据具体情况由有关专家予以解释。

Scope

This standard specifies the method for measuring the explosion index of combustible gas/air mixture in a closed container, and gives the guidelines to be followed when other methods are used to determine the explosion index. This standard is only applicable to the determination of the explosion index after the flammable gas/air mixture is ignited in a limited space, and is not applicable to other indexes necessary to ignite the mixture. If the experimental operation according to this standard does not ignite the flammable gas/air mixture, it cannot be considered that the mixture will not explode, and it should be explained by relevant experts according to the specific circumstances.