Challenge

Repair of Steam Turbine and adapt the blading to lower steam parameters enabling low load operation

Solution

• Aerodynamic optimization of blade path
• Recalculation of valve sequencing
• Design, manufacture and installation of blading and blade carrier in existing machine
• Installation of new digital turbine governor including backpressure control
• Commissioning and governor optimization

Benefits

• Operating parameters successfully modified from 540°C, 18-37 bar (hot reheat of main turbine) to 320°C 20-40 bar (cold reheat of main turbine), 20-120t/h
• Successful commissioning of installation