Published 27th August 2018
On behalf of the Rana Municipality, Norhard have delivered a tunnel for the new water supply Langneset - Åga in Mo i Rana. The tunnel has a diameter of 0.7 m, a length of 925 m and was drilled with an increase of only 2.6° angle. A high level precision was required while drilling due to the small margin at the exit point and height difference between the endpoints. When withdrawing the drilling equipment, a threadwire will be simultaneously threaded and be used to pull the PE cables through the tunnel. The drilling equipment is now rigged to drill a second tunnel which will also be included in the same water supply system.
