Post-Lay Rock Placement LoI for Nord Stream Project Signed
April 29, 2010 | Zug | A LoI (Letter of Intent) on post-lay rock placement for the Nord Stream Project has been signed between Saipem S.p.A. and the Dutch joint venture Boskalis-Tideway. The work is scheduled to commence in 2011 and will be completed in 2012.
The rock that will be used is planned to be sourced from countries on the Baltic Sea coast. The rock material has to meet certain engineering and environmental criteria. Material has to be free from clay, silt, chalk, vegetation, or other deleterious substances. It will behave as any existing inert material on the seabed and will be re-colonised within a few years. In shallow waters, algae will soon populate exposed surfaces and in deeper water where oxygen and light are scarce, the surface of the rocks will be colonised by micro-organisms.
