Rerates, Upgrades, and Modifications


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Rerates, Upgrades, and Modifications
Rerates, Upgrades, and ModificationsTypically, steam turbines are designed for long, useful lives of 30 to 50 years. Periodic replacement of steam turbines’ primary working parts may be required, due to the damaging effect of the environment in which they operate. Many parts are custom designed for each particular application, but standardized components are also used to facilitate delivery and minimize cost. Therefore, a steam turbine can be effectively redesigned several times during its useful life. These redesigns are usually referred to as rerates and upgrades, depending on the reasons for doing them. A typical cutaway view of a turbine is shown in …
Citation
Heinz P. Bloch; Murari P. Singh: Steam Turbines: Design, Applications, and Rerating, Second Edition. Rerates, Upgrades, and Modifications, Chapter (McGraw-Hill Professional, 2009 1996), AccessEngineering Export