AF has performed landfall tunnel system and riser packages at Kollsnes for A/S Norske Shell.
Tunnel system of 7.5 km for gas pipeline from treatment plant at Kollsnes to a connection point 200 m below sea level and 3.6 km offshore.
The contract also included the engineering and installation of qty. 2 450 ton riser packages. These where assembled in the shafts in connection with the tunnels, 165 m below sea level..
| Project type |
Offshore & Civil Construction |
| Timespan |
January 1991 - December 1995 |
| Customer |
A/S Norske Shell |
| Project address |
Kollsnes |
| Contract size |
NOK 480 mill. |
| Contract practice |
General contract |
| Contractor |
AF Anlegg Oil & Gas (75% of project consortium) |
| Volume |
Tunnels: 7.5 km, Riser packages: 2, each 450 metric ton |
