MHI Approach to Upgrading Old Steam Turbines

As a result of high operation hours, older power plants have been subject to function and performance deterioration. As a result, there is an increased need to upgrade steam turbine units to improve performance and increase output. By studying the two performance enhancement upgrade projects listed below, you will be introduced to the design, manufacture and on-site installation work for the modification of a turbine generator. Also discussed is Mitsubishi’s method of harmonizing the new equipment/components with the existing non-OEM steam turbine. Both projects began in late 2003 and were successfully completed in early 2004 by Mitsubishi Heavy Industries, Ltd. (MHI). All delivery, installation and commissioning requirements were met and guaranteed performance was achieved for both units. • HP Turbine Component Upgrade – Pennsylvania, USA; • Modification of Turbine Casing – Korea.