This paper analyzes and discusses the typical problems such as penetrating cracks in the weld seam of the hand hole end cover,seriously substandard evaporation and low superheated steam temperature found in the regular inspection of a waste heat boiler for the incineration of hazardous chemicals.Then,the reason of the problems are analyzed from the boiler operating condition and component structure.Based on the problems,some suggestions are put forward from safety technical specifications,which will provide useful improvement for the users to take measures to ensure the safe and efficient operation of the boiler.
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