燃烧有三个因素，他们分别是：氧气，热量和燃料。
Fuel is anything that will burn when it is exposed to heat. Fuel sources could include paper, wood, oil, grease, chemicals, and flammable liquids. The leading heat sources that result in fires include electricity, welding and cutting, sparks from tools, and friction.
5
Fire Classification 火灾分类
Fires within our area are normally classified into three main groups according to the fuels involved.
根据燃料的不同，我们周围的火灾通常分为三种类型：
遵守所有高温工作的程序。
When in doubt or if conditions change, STOP
and re-check the
area with an approved gas tester.
如果不能确定或者条件有所改变，立即停止工作，用经认可
的气体测试仪对工作区域进行重新测试。
燃料是遇热后能燃烧的任何物质。燃料包括纸张、木材、油、 油脂、化学物品和易燃液体。产生热量并导致燃烧的因素包括 电、焊接、切割、工具产生的火花和摩擦
To prevent a fire, you need to eliminate any of the elements needed for a fire to exist. Since oxygen is all around us, successful fire prevention normally relies on keeping heat sources away from fuel sources.
