Contract Completion: Killybegs Outfall
Norfolk Marine have completed the installation of the subsea elements for the Killybegs waste water outfall as a sub contract for Visser & Smit Hanab, working for main contractor BAM. Our 8 man dive team, working from the Skerchi construction barge, carried out the following operations in 30m of water.
- Location of directional drill bit on seabed and airlifting of drill string exit point
- Setting up of subsea pipe pull equipment and monitoring pull
- Underwater cutting of 450mm diameter HDPE pipe wall thickness 35mm
- Connection of pipe transition piece
- Construction of 150m long subsea pipeline and diffuser
- Installation of precast concrete articulated scour mattress
- Installation of stainless steel diffuser guards
- Backfilling of pipeline trench