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1 事故概况 1994年12月,我省某用户一台1984年投用的DZL4—13型链条锅炉,在运行中发现右侧水冷壁从前向后数第六、第七两根水冷壁管爆管漏水。该用户为了节约修理费用,未听从检验单位的检验意见,仅更换已爆管的二根管子,对其它管子未进行任何处理就重新投入运行。锅炉运行不到一个星期,又发生同侧水冷壁第八根管子爆管漏水,发生了第二次爆管事故。
An accident overview December 1994, a user in our province a DZL4-13-type chain boiler put into operation in 1984, found in the operation of the right side of the water wall from the previous sixth, seventh water tube explosion tube Leakage. In order to save the cost of repairing, the user did not obey the inspection opinion of the inspection unit, and only replaced the two tubes that had exploded tubes, and put the other tubes back into operation without any treatment. Less than a week after the boiler was operated, the eighth tube burst leak occurred on the same side of the water wall, and the second explosion occurred.