SYSTEM AND METHOD FOR GRIT BLASTING AN ANNULAR JUNCTION PORTION OF A PIPELINE AND LAYING VESSEL COMPRISING SAID SYSTEM
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United States of America
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Issued Date -
Feb 3, 2022
app pub date -
Sep 18, 2019
filing date -
Sep 18, 2019
priority date (Note) -
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Abstract
A system for grit blasting an annular junction portion of a pipeline extending along a longitudinal axis on board a laying vessel, comprises at least one carriage configured to advance along an annular path about the pipeline; at least one centrifugal turbine, which is configured to project grit towards the pipeline, rotates about a rotation axis lying on a plane orthogonal to the longitudinal axis and is supported by the carriage; at least one feed device configured to feed the grit to the centrifugal turbine and comprising a hopper which extends along a respective axis, defines a feed chamber and is coupled to the respective carriage and a guide device configured to act in conjunction with the hopper to feed the grit to the centrifugal turbine at all the operating positions of the carriage.
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