NIOT

INSTALLATION OF DEEP SEA PIPELINE & MOORING SYSTEM FOR 1MW OTEC PROJECT


We were awarded the unique project of installing a vertical HDPE pipe of 1 mt. dia of 1200 mts length in the deep sea in a depth of 1400 mts of water on a turnkey basis, by the National Institute of Ocean Technology, Chennai, for their unique Ocean Thermal Energy Conversion (OTEC) project.

The project involved the load out, tow and deployment of 1200 mts of HDPE pipeline of 1 mt. dia in a depth of 1400 mts of water, wherein one end of the pipeline was anchored, with a unique mooring system comprising of an anchor, sinker and chains, about 100 mts above the seabed, while the other end was brought vertically up and kept afloat about 30 mts. below the water surface connected to a mooring buoy.

The top end of the pipeline was then connected to a bullet nose through a flexible transfer hose so that cold water from the bottom of the ocean could be sucked up and run through turbines installed on a floating barge for generation of 1 MW power.

The entire deployment procedure was prepared and successfully deployed by us. The actual deployment operations at site were completed within 15 days.

This is the largest such vertical pipe laying operation ever to be carried out in the world.

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