![]() ![]() Insufficient fluid pressure leading to cavitation within the pump. The remnants were safely recovered to the deck of the Allseas vessel.The root cause of many pump problems and failures can be traced to poor upstream, suction-side, pipeline design. Any size or shape of area within this 1.5 metre area, including the full 360-degree circumference of a tubular, can be cleaned.įinally, a 42” UCS Diamond Wire Saw completed six cuts, requiring only 44 minutes on average per cutting operation. ![]() The CRT is also able to clean a workspace of 1.5 metres in a linear pass before needing to be repositioned, outperforming comparable technologies. This enables the operators to see a graphical representation of the location on the pipe an essential performance enhancement in poor underwater visibility situations. With an innovative dual-nozzle design halving the debris removal time, the CRT is controlled by technicians topside using a bespoke SCADA control system. Once this work was completed, the Coating Removal Tool (CRT) effectively and rapidly removed 1.2 metres of concrete coating and 3LPP undercoating. The initial phase of the project involved the use of an 8in UCS Dredge System with a high-pressure Barracuda head to clear a channel under the damaged pipework. ![]() FL2 comprised an 18in (457mm) OD x 25mm WT carbon steel pipe grade SAWL 450 FDU, with a 3LPP coating and 50mm thick outer Concrete Weight Coat (CWC). The team was enlisted to cut out the damaged pipework in Flowline 2 (FL2) of the Total Laggan-Tormore gas fields in the UK North Sea, ahead of replacement operations. Ashtead Technology’s Mechanical Solutions specialists draw upon decades of experience supporting construction, decommissioning, inspection, repair, and maintenance scopes throughout the offshore energy industry. ![]()
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