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Operational Flexibility Upgrade (OFU)

Valid for following frames: SGT5-4000F (V94.3A)
1 MW

More operational flexibility for intermediate and cyclic operation

Up to 0.4 % points combined cycle efficiency improvement

Siemens Power Generation Services Customer Extranet Portal for owners/operators

General Product Information

Improving the overall performance and competitiveness

One of the innovative solutions offered by Siemens to help you improve the overall performance and competitiveness of your gas turbine and combined cycle power plant is the Operational Flexibility Upgrade.

The Operational Flexibility Upgrade is an integration of proven products optimizing the individual power plant performance and increasing the operational flexibility within a long term service agreement. The Operational Flexibility Upgrade combines proven technology including improved blade and vane design and enhanced combustion technology. This modernization package is the entry card into a flexible operating regime extending the Original Equipment Manufacture coverage beyond 100,000 equivalent operating hours (EOH) and can be implemented at any outage during the long term service agreement program. 


The Operational Flexibility Upgrade includes a turbine performance upgrade modifying key turbine components and hot gas parts which may allow for a significant firing temperature increase. These results are achieved by new coatings for turbine blades and vanes and cooling air reduction in the hot gas path. Finally the CMF++ compressor is also part of the last OFU upgrade version. This modernization has been designed to help yield potential power increase, heat rate improvement and additional exhaust energy. In addition to the achieved performance increase, the Operational Flexibility Upgrade can allow for a maintenance interval extension resulting in an increased availability for the entire plant.