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Underwater Pipeline Repair in Difficult Seabed Conditions: Problems and Solutions

Jones, B. A. / Wright, N.

Summary This paper examines the application of innovative technology to significantly reduce the time for a major repair to a 36 inch diameter buried submarine pipeline. The actual repair is achieved by cutting out the damaged section and inserting a replacement spool-piece. Such operations would be based upon hyperbaric welding which is performed in a dry habitat chamber and is a relatively controlled and straightforward operation. Therefore the research effort was directed towards saving time on the auxiliary tasks such as: seabed excavation, the use of a protective cofferdam, seabed surveying, pipeline weight coating removal and pipeline isolation. It is anticipated that a 40% reduction in the overall repair time is possible with the application of the equipment and methods described in this paper.

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Underwater Pipeline Repair in Difficult Seabed Conditions: Problems and Solutions

Jones, B. A. / Wright, N.

Summary This paper examines the application of innovative technology to significantly reduce the time for a major repair to a 36 inch diameter buried submarine pipeline. The actual repair is achieved by cutting out the damaged section and inserting a replacement spool-piece. Such operations would be based upon hyperbaric welding which is performed in a dry habitat chamber and is a relatively controlled and straightforward operation. Therefore the research effort was directed towards saving time on the auxiliary tasks such as: seabed excavation, the use of a protective cofferdam, seabed surveying, pipeline weight coating removal and pipeline isolation. It is anticipated that a 40% reduction in the overall repair time is possible with the application of the equipment and methods described in this paper.

Underwater Pipeline Repair in Difficult Seabed Conditions: Problems and Solutions

Jones, B. A. / Wright, N.

Summary This paper examines the application of innovative technology to significantly reduce the time for a major repair to a 36 inch diameter buried submarine pipeline. The actual repair is achieved by cutting out the damaged section and inserting a replacement spool-piece. Such operations would be based upon hyperbaric welding which is performed in a dry habitat chamber and is a relatively controlled and straightforward operation. Therefore the research effort was directed towards saving time on the auxiliary tasks such as: seabed excavation, the use of a protective cofferdam, seabed surveying, pipeline weight coating removal and pipeline isolation. It is anticipated that a 40% reduction in the overall repair time is possible with the application of the equipment and methods described in this paper.

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Title:

Underwater Pipeline Repair in Difficult Seabed Conditions: Problems and Solutions

Contributors:

Jones, B. A. (author) / Wright, N. (author)

Published in:

Aspect ’94 ; 225-244

Advances in Underwater Technology, Ocean Science and Offshore Engineering ; 33

Publication date:

1994-01-01

Size:

20 pages

ISBN:

978-94-011-1178-2 , 978-94-010-4514-8

ISSN:

DOI:

https://doi.org/10.1007/978-94-011-1178-2_13

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Submarine Pipeline , Concrete Coating , Boulder Clay , Auxiliary Task , Excavation Rate Engineering , Offshore Engineering , Complexity , Mechanical Engineering , Characterization and Evaluation of Materials

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