The failure rason of firetube waste heat boiler in a petrochemical device was analyzed from equipment structure and operation.The repair process and attentive events were in-troduced.

• 从设备结构和操作使用两方面，分析了某石化装置中火管式废热锅炉的损坏原因。介绍了该锅炉的修复过程及修复时应注意的事项。