Ullensaker Municipality will expand the capacity at Gardermoen treatment plant. In addition to a considerable capacity expansion, the new Gardermoen treatment plant must fulfil significantly more stringent requirements concerning the reduction of the total amount of phosphor used in the treatment process. The expansion will occur through building a new treatment plant in addition to the existing treatment plant, new inlet pump station for the new treatment plant and a new pre purification plant in order to increase the purification capacity for de-icing fluid, C-diol, from the airport. In addition, the existing administration building will also be upgraded.

The expansion of Gardermoen treatment plant, the UGRA project, will consist of several different contracts. This notice concerns piping contract ER01.

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The piping contract includes delivery and installation of heating systems, sanitation and HVAC systems and flush points. The contract also includes establishment of cut-off water supply and associated generator and pipe work.

This building will consists of approx. 4 200 m2 footprint with a main slab level, lower floor and basement. There will be an interface between drains and drain gutters built in EB01 and the sewage pipelines from these installed by the piping contractor. Laying bottom pipelines will be an activity that takes place early before other technical contractors have begun their installation works. The sewage pipelines from drains, drain pipes and internal sanitation and HVAC equipment will be led to prefabricated pump stations supplied and installed by the process contractor.

The heating system must, among other things, collect hydronic heating from the existing heat plant in the sludge building. The construction contractor will lay the local heating pipes between the new treatment plant and the sludge building. The piping contractor runs the pipes out of the respective building and finishes with a flange that the construction contractor can continue laying from. The piping contractor must also lay pipes to collect energy from heat exchangers in connection with blower machines.

The contract also includes sanitation and HVAC installations in connection with reconstruction of the existing administration building. Reconstruction of the changing room system is a significant part of the reconstruction of the administration building.