Generator maintenance
Our generator plant expertise is based decades of experience in generator maintenance and overhauls as well as the modernisation of generator excitation and protection systems.

Generator maintenance is carried out with overhaul inspections at set intervals which are supplemented by various measurements, if necessary. We are independent from suppliers and our specialists have wide experience in different power plant technologies. We have expanded our expertise on turbo generators covering all brand of generators. Our workshops are in Naantali Finland and in Västerås Sweden.
Fortum services
- Long-term condition management planning
- On-line and off-line condition monitoring (mechanical and electrical)
- Endoscope inspections
- Overhaul and spare part planning
Minor and major overhauls
- Any cleaning, inspections, and coatings that are required
- Bearing maintenance work
- Inspections (and any necessary replacements) of winding wedges
- Repairs to windings and joints and stator re-windings
Rotor overhauls
- Inspections and replacement of retaining rings
- Rewindings
- High-speed balancing
Our services also include
- Fixed-term inspections of generator protection relays
- Inspections of excitation and synchronisation devices
- Fault investigations
- Installations of new machine units
- Protection of client’s interests, ”Owner’s Engineer” service
- Repair and engineering works at Turbine Workshop Center at Naantali
- Long-term service agreements for all provided services