Assessment technology for turbine blades

Conference · Tue Aug 01 00:00:00 EDT 1995

OSTI ID:79835

McCloskey, T H ^[1]; Rieger, N F ^[2]

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1. Electric Power Research Inst., Palo Alto, CA (United States)
2. Stress Technology Inc., Rochester, NY (United States)

Blade failures are the leading cause of steam turbine unavailability for large fossil fuel power plants in the US, costing utilities over $200 million per year in maintenance and lost revenue. In low-pressure (LP) turbines, the major concern is failure of blades by corrosion fatigue in the last or next-to-last stage. To reduce the incidence of these failures, industry efforts have included development and testing of blade evaluation tools, new blading materials, and blade coatings. In intermediate-pressure (IP) and high-pressure (HP) turbines, solid particle erosion is a major concern. To address this problem, industry work has included reducing the source of the solid particles, removing the particles upstream of the turbine, protecting the turbine from the effects of the particular matter, and adjusting operation.

• OSTI ID: 79835
• Report Number(s): CONF-950414--
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
B CODES
CHROMIUM CARBIDES
COATINGS
COMPUTER CALCULATIONS
COST
FAILURES
FORECASTING
FOSSIL-FUEL POWER PLANTS
FRACTURE MECHANICS
MESH GENERATION
SERVICE LIFE
STELLITE
TITANIUM ALLOYS
TITANIUM NITRIDES
TUNGSTEN CARBIDES
TURBINE BLADES