Authors : Ahmed A. Fadhil, Muataz H. Ismael, Adiba A. Mahmmod, Omar A. Imran, Salah N. Farhan and Hongfang Liu
Abstract: Pipes boilers in power plants leads to big problems and loss of thermal equipment. Through the field visit to South Baghdad station for electrical power been getting several problems faced by pipes boilers in the plant. The current study aims to analyze the main causes that lead to the failure of the pipes boilers in South Baghdad electric power. Failure analysis methods including chemical, mechanical characterizations and visual examination using optical microscopy in combination using Scanning Electron Microscopy (SEM) equipped. The results of this research indicate that the main reason behind for this failure tow type of failure first one the Glue remnants of heavy fuel combustion (Ash) on the outside of the pipes boilers. By examining The chemical composition of fuel ash is 69% Vanadium Oxide (V2O5) and 31% Sodium Sulfate (Na2SO4). These materials are of relatively low melting point between (550-560)°C and the working conditions of these boilers are between (500-800)°C. The second one flow water inside the pipes boiler contains a high present of the primary ions distinguished were Bicarbonate proportion (HCO3- Chloride(Cl-) and Sulfate (SO42-) where Chloride (Cl-) has been known as aggressive ions. The pH of water was equal to 8.2 or unnecessary condition.
Ahmed A. Fadhil, Muataz H. Ismael, Adiba A. Mahmmod, Omar A. Imran, Salah N. Farhan and Hongfang Liu, 2019. The Boiler Pipes Failure in Power Plants (South of Baghdad Station). Journal of Engineering and Applied Sciences, 14: 2187-2194.