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Tang D.,Sichuan CPI Fuxi Power Co. | Xie Z.,Sichuan CPI Fuxi Power Co. | Liu R.,Sichuan CPI Fuxi Power Co. | Xiong X.,Shanghai Power Equipment Research Institute | And 3 more authors.
Dongli Gongcheng Xuebao/Journal of Chinese Society of Power Engineering

To handle the crack failure occurring on upper part of front wall in early operation of a supercritical W-flame boiler, an analysis was performed based on onsite measurements of the steam temperature, while in-furnace simulation calculation and hydrodynamic check calculation were conducted, after which the failure was found to be caused by large deviation of steam temperatures. Results show that the too large deviation of steam temperatures leads to the deformation and cracking of front water wall in the upper furnace. The problem has finally been tackled through operation adjustment, overhaul and technical retrofit, thus obtaining safe and stable operation of the boiler. © 2015, Editorial Department of Chinese Society of Power Engineering. All right reserved. Source

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