Steam Turbine Blade Failure
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Date
2011
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Turbomachinery Laboratory, Texas A&M Engineering Experiment Station
Abstract
The objective of this Case study is to share the Failure analysis of a steam turbine blades due to blade excitation aided by corrosion.
The blade failure was detected early by Company Vibration analyst in July 2006, when maximum shaft vibration had a step change from 9 Microns to 18 Microns Pk-Pk. (SET Points: Alarm at 58 and Trip at 72 Microns Pk-Pk).
This helped in arranging resources and plan a short shutdown of 8 days in March 2007 to replace the rotor.
The following slides explain the detailed failure analysis and corrective actions taken.
Description
Case Study