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Core Grouting Services completes pipeline-free span project in Trinidad and Tobago


Published Mar 24, 2015
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Core Grouting Services equipment on vessel

Core Grouting Services, an Acteon group company, has successfully completed a pipeline-free span rectification project in Trinidad and Tobago. Core installed grout bags at several subsea locations beneath a pipeline at water depths of 120-to-150 m.

Free spans on subsea pipelines are spans of the pipeline unsupported by the seabed and pipelines with long free spans are subject to increased fatigue loads and reduced pipeline integrity.

One method for correcting free spans is to install grout bags in the free span to support the pipeline. Grout bags are fabric formworks, which are positioned on the underside of the pipeline and then filled with a cement-based grout from a mixing and pumping unit situated on a support vessel. Once the bag is full, the flexible tether line is cut, activating the self-sealing valve on the grout bag inlet.

Tags: Core Grouting Services




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