When Wolf Creek Generating Station replaced its high and low-pressure turbine rotors and diaphragms, our team was the responsible engineer for the replacement of the main turbine along with upgrades to several peripheral turbine systems. The upgrades increased the steam path efficiency, resulting in greater output. In addition, the mono-block design reduced the risk of stress corrosion cracking (SSC).
Our scope included the development of several engineering change packages, performing system and component evaluations to assess impacts of operating changes, development of the turbine deck floor loading analysis to optimize refuel operations, and interfacing with the turbine generator supplier.
We provided all engineering support, including the evaluation of significant downstream system effects. Design change packages were developed as it related to the evaluation of turbine support, cooling water and steam cycle subsystems. Our team also provided project management and field implementation services during the actual turbine rotor replacement.
Our team completed all structural evaluations of the turbine generator foundation pedestal and all structural analysis to ensure that the foundation met the performance criteria established by the manufacturer of the replacement turbine rotor. We evaluated plant structures for heavy equipment travel paths and lay-down space. Finally, we engineered an innovative temporary equipment storage system that maximized floor space and facilitated logistic operations during the turbine rotor replacement. Additional responsibilities included the preparation of all design calculations and drawings, preparation and review of installation work instructions, work package planning, and review and approval of vendor supplied documentation.