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High HP Differential Expansion in Steam Turbines by Imran Wazeer is a document available to read on EtoBox.

The high pressure turbine is experiencing differential expansion ranging from -1.6 mm to -1.9 mm during base load operation, outside of the acceptable alarm and trip set points. In the past, stable operation was seen from Jan 2012 to Mar 2012 but complex load variations from NPCC have caused issues from Aug 2014 to Feb 2015 and Jan 2015. A fishbone diagram identifies potential contributors like casing drain valves, bearing pedestal restrictions, probe mounting looseness, and probe errors. The plan is to ins

Author

Imran Wazeer

Language

EN