HPP Senj is a large high-pressure diversion hydropower plant utilizing water from the Lika and Gacka rivers in Croatia. Senj HPP has four turbines with a nominal capacity of 72 MW each, totaling 220 MW. It is operated by Hrvatska Elektroprivreda. (Wikipedia).
The concept of powering such a plant is presented in the diagram below:
A diversion hydropower plant, sometimes called a run-of-river plant, channels part of the river’s water through a canal and/or a penstock, utilizing the natural drop in the riverbed to generate energy. The penstock is a closed conduit that directs water flow to the turbines, with the water flow regulated by sluices, valves, and turbines. A diversion hydropower plant may not require a dam. (https://www.energy.gov/eere/water/types-hydropower-plants)
Our scope includes machining the so-called fixed ring, the area where the guide vanes are installed, as well as machining the flanges of the pressure regulating valve.
Additionally, we also machined the vertical flanges on the supply pipeline, between which the main inlet valve (MIV) is mounted.


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