DocumentCode
280883
Title
Alternator rotor cracking problems and their solutions
Author
Gorry, M.B.
Author_Institution
Nucl. Electr. Heysham, UK
fYear
1990
fDate
33205
Firstpage
42461
Lastpage
42463
Abstract
Heysham nuclear power station has two 660 MW turbogenerators manufactured by NEI Parsons. The rotor is an alloy steel forging with field winding slots cut along the full length of the round rotor body. In January 1988 a rotor of similar type to Heysham´s operating at Drax was taken out of service and found to have a major crack. During September a second rotor at Drax was also found to have a major crack. The author looks at maintenance and inspection techniques used at Heysham to make sure that the same cracking does not occur
Keywords
inspection; maintenance engineering; nuclear power stations; rotors; synchronous generators; turbogenerators; 660 MW; Heysham nuclear power station; NEI Parsons; alloy steel forging; alternator rotor cracking; field winding slots; inspection techniques; maintenance; turbogenerators;
fLanguage
English
Publisher
iet
Conference_Titel
Maintenance Practices for Power Generation, IEE Colloquium on
Conference_Location
London
Type
conf
Filename
191341
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