The reservoir belonging to the Lutz Oberstuff Power plant is Raggal, Austria, holds the water of the river Lutz behind a 100-metre-wide dam. The storage capacity is as much as two million cubic metres of runoff water, made available to the power plant 10 metres below required.
After 21 years of continuous operation, it was time to replace the old dredger with a new, more powerful machine. The machine also had to take into account stringent environmental regulatory requirements and the shorter annual operation period. A 4.2 m³ grab dredger was specially designed for use in the Raggal reservoir with several state-of-the-art components.