Annual Report 2011-2012

Annual Research Report 2011-2012
Project Title:
Analysis of Failures of 159 MW Gas Turbine Insert Burner
Department: Metallurgy
ProjectManager: A.A. Fallah
Employer: NRI
ProjectCode: CMTMP01
ProjectStaff: M.R. Shirpay, M.Ardestani, S.A.Khatir
Project Summary:
Premature failure of hot gas path components in gas turbines is due to various factors
such as design, operation parameters and material quality. The main failure mechanisms
of these components are creep, fatigue, corrosion and erosion. Since early failure of the
components leads to unit shutdown, therefore study of failure mechanism and causes is
necessary to prevent similar future damages.
In this project, various tests were performed on failed insert burner of a 159 MW gas
turbine, their operating records were studied, and stress & temperature distribution were
determined on the component with the help of simulation software.
Finally, the failure mechanism and causes were determined and proper corrective
actions to prevent failure repetition were recommended.
Project Results:
• Determining the main causes of premature failure of 159 MW gas turbine insert
burner.
• Recommending preventive methods for failures of 159 MW gas turbine insert
burner.
Project Documentation:
• “Analysis of Failures of V94.2 Gas Turbine Insert Burner”, Metallurgy
Department; Chemistry and Materials Research Center, NRI; 2011.
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