R.W. Vanstone and S. Osgerby, Alstom Power, UK
Materials technology is key to enabling improvements in steam turbine performance arising from retrofit. Materials selection, the main degradation mechanisms and material issues, together with any special processes required, are discussed for each major component of the high temperature and low temperature cylinders. It is demonstrated that the selection of appropriate materials and special processes allows the efficiency improvements arising from retrofit of steam turbines to be achieved with low risk of component failure.
This chapter ...