Lake Mjosa wastewater pipeline, Norway
7 km sewage pipeline, butt fusioned into one single length. Full-length sinking operation. Max depth 270 m. Olex monitoring of sinking.
The new HDPE wastewater pipeline runs from Brastad to Rambekk purification plant. The 7 km pipeline was installed down to a maximum depth of 270 m. Besides the pipe installation with butt fusion and weighting, the work have also incuded land connections, trenching and under water blasting plus onshore trench work. A 5.5 km marine subsea cable was installed at the same time.
Facts and figures
- Maximum depth 270 m.
- Wastewater pipe Ø400 mm PE100 SDR 7.4, length 6585 m
- Marine fiber cable length 5500 m
- Pipe Ø160 mm PE100 SDR11, length 190 m