Since No.5 and NO.6 supercritical once-through boilers of Shangdu Power Generation were put into operation

abnormal shutdown accident occurred many times which cased by the oxide skin exfoliation. The safety and economic operation of the Power Plant was seriously affected. The cause and harm of the oxide skin exfoliation was studied. The oxide skin exfoliation prevention and control measures were made out in Shangdu Power Generation

and the influence to the normal running of the boiler was reducted.