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Shell Leman Alpha - Southern North Sea

The Leman Alpha complex is a Shell UK owned and operated production platform, located in the Southern North Sea sector of the UK.

The DBB-SAVER was used to safely isolate the platform from the pressurized 30” sea pipeline to safely execute works in a Turn Around. It was used to vacumize the section between the Sub Sea Isolation Valve and the Riser Valve. The High Capacity DBB-SAVER model was selected for this deployment to compensate for some performance loss due to the long hose lenghts used to hook the DBB-SAVER up to the bleed point.

The DBB-SAVER outlet was hooked up via hoses with the platform vent system via a tie-in also.

The Turn Around could start as planned without any delays or safety issues caused by the passing isolation valves. The DBB-SAVER stayed in continuous operation for >70 days during the whole TA.

Link to the customers website:


 Company: Shell UK – Leman Alpha platform
 Situation: Execution of maintenance works in TA
 Result: Reduction of platform downtime and limit blowdown volume



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