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Case Studies

Centrica Rough Platform - Helideck

Sectors: Oil & Gas
Applications: Special girder clamp

Summary: Lindapter Girder Clamps were used to permanently secure a new helideck to the Centrica Rough 47/8A Offshore Platform.

Following a review of the platform, engineers made the decision to refurbish the platform’s corroding helideck. This required a connection that would not create galvanic corrosion from the juxtaposition of dissimilar metals and salt water catalyst.

Lindapter provided the solution in the form of bespoke Girder Clamps, featuring synthetic polymer coatings to eliminate electrical contact between the structural steel and aluminium deck. The Girder Clamp system was configured with Type B clamps to create a series of connections, without drilling or welding. The Lindapter fixings created additional anti-corrosion benefits as the platform’s steelwork integrity and protective coatings were preserved.

Lindapter’s clamping systems feature on-site adjustability and enabled the new deck components to be precisely aligned with speed and ease; this was particularly important for this application as the helideck parts required interlocking. All Lindapter fixings are accompanied with approved safe working loads and in this case were calculated to withstand the dynamic loads associated with the landing and take-off of helicopters.

As hot work permits are not required, there is minimum interruption to productivity and work can be carried out safely and quickly, without the need for on-site power or specialist tools. The rapid installation with minimal impact on the rig’s output creates obvious cost benefits for an offshore platform of this nature.

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