Tallinn DN 1200 heat network insulation

Client: Tallinna Küte AS / Year of completion: 2015

The DN1200 underground pipeline was fully renovated and the terrestrial pipeline was partially renovated with the total length of 8000 m.


Insulation of the pipeline was replaced, all assembly units were reconstructed, DN800 on-off valves were installed, compensators of the DN1200 pipeline were replaced, structures of the reinforced concrete channel were replaced, where necessary, hydro insulation was built for the entire channel and the existing condition was restored.


For insulation, PUR shell with the thickness of 120 and 90 mm made by AS KE INFRA was used.