In April 2016, SCHAAF received the order from Andritz AG in Graz, to deliver several Multiple Stud Nuts and ExpaTen bolts for the machinery use Oschenik 1 in the power plant Innerfragant in Carinthia, Austria. The 6-level storage pump has a performance of 30 MW and conveys 3.32 m³ water per second over an altitude difference of 1,000 metres into the storage lake Oschenik.
The degree of efficiency is increased from nearly 85 % to 90 % compared with the old pump. The components of the storage pump is designed for 10 starts per day over a life expectancy of 75 years. The entry pressure of the water is 27 bar, the outlet pressure is 120 bar. Levels 4 to 6 were loaded during testing with 225 bar.