Rotor welding to improve SCC resistance
Conference
·
OSTI ID:697222
- Siemens Westinghouse Power Corp., Charlotte, NC (United States)
Stress corrosion cracking (SCC) of low pressure steam turbine rotor blade attachments and disc bores is an industry issue on many older fossil and nuclear units. This paper discusses repair options available to the plant operator ranging from component restoration to enhancements dramatically increasing SCC resistance. The techniques described are uniformly applicable regardless of OEM and include geometric improvements to reduce peak surface stresses and material improvements through replacement or weld repair of components. Highlighted is the application of Gas Tungsten Arc Welding (GTAW) of steam turbine rotors including the use of 12% Cr weld metal to minimize susceptibility to SCC.
- Research Organization:
- Illinois Inst. of Tech., Chicago, IL (United States)
- OSTI ID:
- 697222
- Report Number(s):
- CONF-990410--PROC.-Vol.1
- Country of Publication:
- United States
- Language:
- English
Similar Records
Welding of combustion turbine rotors and discs
Method for repairing a steam turbine or generator rotor
Evaluating the SCC resistance of underwater welds in sodium tetrathionate
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:234175
Method for repairing a steam turbine or generator rotor
Patent
·
Mon Jan 05 23:00:00 EST 1987
·
OSTI ID:6902477
Evaluating the SCC resistance of underwater welds in sodium tetrathionate
Conference
·
Sun Nov 30 23:00:00 EST 1997
·
OSTI ID:548560