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Keywords: trencher
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Proceedings Papers

Paper presented at the 10th World Petroleum Congress, September 9–14, 1979
Paper Number: WPC-18301
... of equipment and procedures for trenching and operational repair. The pipeline trencher is based on an electrichydraulic powered mechanical cutter tracked on the pipeline. Repair is based on hyperbaric welding by divers, tools operated by a manned submersible, and mechanical connector installed by guidance...
Proceedings Papers

Paper presented at the 5th World Petroleum Congress, May 30–June 5, 1959
Paper Number: WPC-8714
... 4 ft on the offshore end of this section to 15 ft in the breaker area at the beach. The patented submarine pipeline trencher was used for this operation. Cathodic Protection - Although the coal-tar coat- ing on the pipe is heavy enough to provide excellent corrosion resistance, Hyperion engineers...

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