Designed to help protect marine mammals, Sealing System uses air cushion process to reduce underwater noise generated during foundation work for offshore facilities by 10 dB. System consists of 3 sealing rings that enclose external hollow pipe on upper end against column to be driven, allowing air to be compressed into middle space, displacing water. System performs at depths up to 40 m and at pressures up to 6 bar.
This story is related to the following:Noise Control |