兰州军区驻甘肃省平凉市某部队,更新K ZL1-7型锅炉一台,由当地国营红峰机械厂承担安装。在安装工程即将结束时,于一九八六年七月四日下午五时,安装工王继宗和部队派来的辅助军人点火烘炉。因木材较湿难以引燃,即向炉膛泼洒汽油约三公斤,当用火柴从防爆门直接点火时,引起炉膛爆炸。致使炉排下部风室前后墙、水冷壁管下部护墙全部倒 Lanzhou Military Region in Pingliang City, Gansu Province, a unit to update K ZL1-7-type boiler, by the local state-owned Hongfeng Machinery Factory commitment to installation. Towards the end of the installation project, at about 5 pm on July 4, 1986, installer Wang Jizong and auxiliary military personnel sent by the units fired their ovens. Due to wood is difficult to ignite wet, that is, about three kilograms of gasoline spilled to the furnace, when using a match directly from the explosion-proof door ignition, causing the furnace explosion. Resulting in grate lower front and rear plenum, water wall tube all the lower parapet down