Client
Leading Power Producer (confidential)
Location
Greece, Agios Georgios Power Plant, Athens
Industry
Power Generation
Asset Type
Thermal Power Plant, 2 x 250 MW LMZ Steam Turbine Units
Solution Category
Steam Turbine Control Systems, Unit Control & Protection Systems, Boiler DCS Integration, HMI Systems, Overspeed Protection, Actuation Control

Turnkey retrofit of the steam turbine control, protection and monitoring system at Agios Georgios Power Plant, supporting improved load accuracy, response speed and grid stability.
The project addressed the limitations of ageing hydraulic turbine control systems, which restricted turbine response and created power output fluctuations, especially after the plant’s boiler conversion from diesel fuel to natural gas. A key requirement was to integrate the new turbine control system with the existing boiler DCS, while retaining the old hydraulic control system as an operational backup.
MAS delivered a customised retrofit solution combining modern electronic turbine control, boiler-side coordination, local HMI supervision and safe failover to the existing hydraulic system. The project was undertaken on a turnkey basis, covering detailed engineering, machine optimisation study, procurement and assembly, software development, installation, commissioning and training.
This project highlights MAS’ capability to deliver complex steam turbine control retrofits in ageing thermal power plant environments, where operational continuity, grid response and legacy system integration are critical.
MAS engineered a complete steam turbine control system upgrade, combining unit control and protection systems, high-speed actuation control, boiler DCS integration, local control room HMI systems, turbine ESD systems and overspeed protection within a unified retrofit architecture.
The project also demonstrates MAS’ experience in thermal power plant control upgrades and brownfield turbine modernisation projects, including FAT validation, installation, commissioning, training and turnkey execution, with engineering aligned to IEC 61508 SIL-3 and API 670 compliance requirements.
Download the Full Case Study for deeper technical details, system architecture and project outcomes