Turlough Hill hydro power station, Co. Wicklow, Ireland

Turlough Hill is a pumped storage hydro-electric station. It comprises a huge cavern in the heart of the WicklowMountains in which the generation plant and controls are housed.

A pumped storage system allows for the use of excess electricity capacity during non-peak hours to pump water from the lower to the upper lake and then to release water in the reverse direction to create electricity in times of maximum demand.

Pressurisation system for the escape stairway Colt Mechanical pressurisation Shaft Pressurisation system for the escape stairway Colt Mechanical pressurisation Shaft

When modifications were being made to extend the life span of the station, Colt worked with Powergen Safety Services to design a pressurisation system for the escape stairway at the station. The pressure differential system equipment consists of standby and operational fans, distribution ductwork, balancing dampers, a pressure relief ventilator and its associated control system. To ensure that the system operates in the event of an emergency an alternative power supply and standby equipment was also provided.