发生火灾的原因有哪些

2025-04-01 04:24:57
推荐回答(1个)
回答1:

  火灾事故常常发生,如此频繁的火灾了解火灾的安全知识很有必要。那么,你知道发生火灾的原因有哪些吗?下面是我带来关于发生火灾的原因,欢迎大家阅读。

  火灾发生的直接原因是很多的。概括起来、可以分为三个方面:

  发生火灾的原因一

        由于人们的思想麻痹,用火不慎,不遵守操作规程或机械、电气设备不良,安装不当而引起的火灾;

  发生火灾的原因二

        由于自然的、化学的或生物的作用而引起自燃起火;

  发生火灾的原因三

        纵火。

  具体地说,通常又是下列几种原因较多:

  (一)用火不慎。如使用炉火、灯火不慎,乱丢未熄灭的火柴、烟头、火灰复燃等引起的火灾。

  (二)用火设备不良。如炉灶、火炕、火墙、烟囱等不符合防火要求,靠近可燃结构,或年久失修,裂缝窜火,引起可燃材料起火。

  (三)违反操作规程。如焊接、烘烤、熬炼,或在禁止产生火花的场所穿带铁钉的鞋、敲打铁器、在充满汽油蒸汽、乙炔、氧气等气体的房间吸烟或使用明火等引起火灾。

  (四)电气设备安装、使用不当。如电气设备及其安装不合乎规格、绝缘不良,超负荷,电气线路短路,在电灯泡上包纸和布等可燃物,乱接乱拉电线,忘记拉断电闸或关闭收音机等都易造成火灾,甚至走电打死人。

  (五)小孩玩火。小孩玩火柴、打火机和吸烟,乱烧纸,在有可燃物的地方放鞭炮,跑到场院里烧毛豆等,不仅容易造成火灾而且因小孩年幼无知往往被火烧死。不少火灾是小孩玩火引起的。

  (六)爆炸引起的火灾。火药爆炸,化学危险品爆炸,可燃粉尘纤维爆炸,可燃气体爆炸,可燃与易燃液体蒸汽爆炸,以及某些生产、电气设备爆炸,往往造成很大的火灾。

  (七)自燃起火。浸油的棉织物,新割的干草、谷草、树叶,新打的粮食,没晒干的豆子、籽棉、泥炭、煤堆等通风不良,以及硝化纤维胶片、硫化亚铁、黄磷、磷化氢等,都易自燃起火。另外,有些物质如钾、钠、锂、钙等与水接触即起火;棉花、稻草、刨花与浓硝酸接触也易起火。有些化学产品,如高锰酸钾与甘油混合一起立即起火。因此,必须根据这些物质的特性,采取相应的防火措施。

  (八)静电放电、雷击起火。雷击容易起火,大家经常可以看到。但静电放电往往不太注意。例如转动的皮带、沿导管流动的易燃液体、可燃粉尘等,都易产生静电。如没有导除静电的相应措施,静电放电极易产生火花造成火灾。许多油库油罐起火,就是这种原因引起的。

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