... of a section) from an internal frame of steam turbine serviced for about 250,000 h. Performed research has proven that through the microstructure degradation long-term service contributes to an embrittlement and decrease in yield strength and tensile strength. The heat treatment, however, contributes...

... a computation method that can be used to estimate the working life consumption of a steam turbine rotor. In the method, creep and low cycle material damage were considered. The calculations are based on the Palmgren–Miner hypothesis of linear damage accumulation. The computation was done utilizing the Microsoft...

... detection cracks nuclear reactor steam generators steam turbines stress analysis failure (mechanical) failure analysis The assessment of steam generator tubes with defects is of great importance for the life extension of the nuclear steam generators. Circumferential through-wall cracks...

... steam turbines power plants nuclear power stations neural nets eddy current testing pressure vessels nondestructive testing Eddy current inspection is commonly used to test the integrity of steam generator tubes as pressure boundaries for the safe operation of nuclear plants. The eddy...

... received May 23, 2001. Associate Editor: Y. W. Kwon. 15 February 2001 23 May 2001 pipe flow fluid dynamics stability elasticity velocity damping force steam turbines pressure vessels A group of tubes submerged in crossflow can be subjected to dynamic instability...

... steam turbines power plants ageing pressure vessels heating high-pressure techniques high-pressure effects In late 1993, EPRI initiated a five-year collaborative program with 20 utilities to address concerns surrounding operation and repair of high-temperature components such as turbine...