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Marine Project

Marine works for Strandfontein desalination plant for PROXA, Western Cape, South Africa 2018

The Project Scope

Stefanutti Stocks Coastal, in joint venture with TAG Diving undertook the marine scope of work for the Strandfontein desalination plant. The bulk of the original scope of work was completed within a period of nine weeks and included the procurement, manufacture, installation and commissioning of the plant and materials for the Strandfontein seawater intake line, brine line and pump station.

Through early contractor involvement Stefanutti Stocks Coastal and PROXA’s design engineer, PRDW, value engineered the pipe-line configuration to achieve an excellent balance between the design requirements (for the total weight and stability of the pipeline on the seabed), and the practicality of manufacturing and installing this pipeline. The outcome was a dual pipe – two 600-metre long, 500mm OD HDPE piping – installed side by side in the pipe-stringing yard.

The pipe was launched in two 300-metre long strings, with the first string including the 144-metre brine line. The launching and towing was undertaken by a tug boat (with a 500-metre towline attached to the pipeline) and six synchronised excavators walking the pipeline into the sea.

Customer feedback

Stefanutti Stocks: Marine Contracting

excellence in execution