Bergen kommune, Water and Sewage Authority (VAV), manages W&S installations that include over 100 km of
tunnels and caverns.
Since 2007, inspections have been undertaken for control and implement safety measures in order to ensure safety against debris and landslides in many of the installations.
The W&S installations in mountains consist of a treatment plant for waste water and associated supply tunnels, sewage and discharge tunnels, water treatment plants with pure water basins, and tunnels for supply and distribution to the consumers.
The treatment plans for waste water and water treatment plants consists of larger caverns with many installations and open basins that require extra measures and equipment in order to scale and secure the rock in the rooms.
For an overview of the current plan for securing, see the qualification documentation, Annex 4.
Bergen kommune, c/o The Water and Sewage Authority, intends to enter into a framework agreement with one contractor for the execution of rock protection of the municipality's mountain installations. The framework agreement also includes protection measure in the open air by access roads and pithead installations (for example cliffs/cuttings).
Please note that also other authorities and department in Bergen kommune can utilise this framework agreement.