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Penstock for HPP Sella

Upgrade of HPP using in-house designed penstock system in Switzerland

Description of project:

The penstock steel pipe is 950 m long and traverses mostly steep rocky ground. To protect it against rock fall and also for esthetic reasons, the entire length of the penstock was buried in a trench. The 900 mm diameter pressure conduit was designed according to our in-house developed system.

ÅF's services:

We were commissioned by Alpiq (formerly ATEL) to elaborate the construction design and supervise the erection works of the project aimed at utilizing the existing difference in hydraulic head between Sella Lake and the lower Lucendro Lake for power generation.

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