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Published in:
01-04-2007 | Feature
Failure Analysis of a Gas Turbine Marriage Bolt
Published in: Journal of Failure Analysis and Prevention | Issue 2/2007
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Excerpt
A gas turbine exploded after 3 h of ordinary operation. This type of gas turbine works at maximum 5,100 rpm angular velocity and 18 MW output power. The rotor of the turbine had undergone repair after 77,000 operating hours and was then assembled on another unit of the power plant. Total operating hours and number of starts were 95,000 h and 4,785 times, respectively. The operating hours are listed in Table 1.
Table 1
Operating Hours of the Gas Turbine
|
Item
|
Data
|
|---|---|
|
Total operating hours
|
95,000 hours
|
|
Total number of starts
|
4,785 times
|
|
Operating hours prior to repair
|
77,000 hours
|
|
Operating hours after repair
|
18,000 hours
|