Failure Characteristics Of Boiler Pipes In Al-Emsaeb Electric Power Plants | ||
| Journal of University of Babylon | ||
| Article 1, Volume 20, Issue 1, February 2012, Pages 87-100 | ||
| Author | ||
| Sami Ibrahim Jafar | ||
| Abstract | ||
| Boilers are a main part of electric power plants , which mostly suffer from different types of failures. Overheating & corrosion are considered to be the most important causes of failures in boiler pipes in power plants. These Failures can be categorized as long- term & short term overheating . Failures also caused by collection of corrosion products, deposits or other foreign material on the inner surfaces of tubes boiler. Several failed samples from different locations in the boilers was tested. The microscopic examination of failure areas of the pipes, showed different types of distortion and clear appearance of corroded area in the microstructures of the pipe metal. The micro structural analysis of failure and the causes of the failure have been determined and the mechanism of corrosion in one of Iraqi electric power plant has been discussed in this work. | ||
| Keywords | ||
| overheating; emrittlement; thin lip; thick lip; mouth rupture; Swelling; cobra pearlile; bainite; martinsite | ||
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