Heavy plate for the Káhranjúkar hydroelectric plant
World's highest penstock lines
A new hydroelectric power generating plant is currently taking shape in the eastern region of Iceland, and will supply energy to a new aluminium smelter from 2008 onward. The central element of the installation is made up of two vertical penstock-lines, the highest in the world, at 420 metres. No less impressive is the internal diametre of these pipes, at 3.4 metres. The project engineers selected DI-MC thermomechanically rolled fine-grained steel from Dillinger for fabrication of the penstock lines and the appurtenant bifurcations, the definitive criterion being this steel's excellent weldability. The heavy plate was supplied in thicknesses of up to 102 millimetres. Water-quenched and tempered DILLIMAX steel from Dillinger, in thicknesses ranging up to 150 millimetres, was also used on this project, for heavily load-exposed components.
| Opening date | 2008 |
|---|---|
| Country | Iceland |
| Quality | DI-MC 355, DI-MC420, DI-MC 460, DILLIMAX 690 |
| Building owner | Landsvirkjun |
| Delivered quantity | 5330 t |
| General contractor: | Fosskraft (consortium of Hochtief, Pihl & Sön, Istak, Íslenskir aðalverktakar) |
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