Kort beskrivning
Raw water intake will be established at Vefsrud and an approx. 19 km long transfer tunnel from Holsfjorden to Huseby. The tunnel will be drilled with 2 TBMs (tunnel drilling machines), one from each side. The drill diameter will be a minimum 4,5 m. The raw water tunnel has no electrical installations, while the intake at Vefsrud has an intake hall with instrumentation and drain pumping station. Electrical supply to Vefsrud and Huseby will be established in the form of individual preliminary projects.