The preparatory phase
On October 3rd, 2016 the contractor received the commencement order to start with the work. This initiated the preparatory work phase. The primary focus during this phase is to draw the exact route, investigate soil compositions and localize existing underground cable and pipeline infrastructure. Simultaneously, numerous individual plans are developed and streamlined: the layout of work terrains, the dewatering plan and the calamity plan. The aspects Health, Safety and Environment are highly important in this phase.
The actual construction work commenced in February 2017. The steam pipeline and condensate pipeline are installed in both underground and aboveground sections. Work will be carried out at multiple sites at the same time. Once work on a specific segment is completed, the restoration work will commence immediately, which includes returning the road to its original condition, replanting the vegetation and cleaning the work terrain.
Once all construction work is completed, preparations start to commission the pipeline and make it operational. All individual elements are extensively tested and numerous measurements ensure that all pipeline segments are connected safely and properly. All electric facilities are also thoroughly inspected. As soon as the first company starts using the heat delivered by the steam network, the condensate pipeline is also commissioned.