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大型浮顶储油罐遭雷击起火事故,基本发生在罐壁与浮盘之间的密封圈处,目前的消防设施对于扑灭类似火灾存在两方面技术缺陷:一是由现场手动报警、电视监控报警和感温光栅构成的报警控制系统,无法保证在第一时间发出准确的报警;二是固定灭火设备的布置方式在液位较高时存在灭火盲区,在液位较低时泡沫很难喷射到火源根部,达不到隔离空气的目的。为此,将感温光栅(感温电缆)安装在浮船二次密封上部1 m以上的位置,并安装在固定支架上,降低其在火灾初期遭受破坏的概率,同时增设自动消防炮并辅以相应的监控手段,使火情监测、发现、启动泡沫消防系统到喷射泡沫的全过程,做到灵敏、可靠、无盲区。
Large floating roof storage tank was struck by lightning, which basically occurred in the seal between the tank wall and the floating plate. There are two technical flaws in the current fire-fighting facilities for putting out similar fires: one is manual alarm on site and the other is alarm on TV monitor And temperature sensing grating consisting of alarm control system, can not guarantee the accurate alarm in the first time; Second, the fixed fire extinguishing equipment arrangement There is a high level of fire extinguishing blind spot, the foam is difficult to spray at low levels Fire roots, reach the purpose of isolation of air. To this end, the temperature sensing grating (temperature sensing cable) installed in the pontoon at the top of the secondary seal more than 1 m and installed in the fixed bracket, reducing its probability of destruction in the early stages of the fire, while the addition of automatic fire cannons and supplemented by The corresponding monitoring means to make the fire monitoring, discovery, start the whole process of foam fire fighting system to spray foam, be sensitive, reliable, no blind spots.