Cold-work stiffening for new penetrations in an FPSO fan house

ServiceFPSO modification steelwork
AssetFPSO
RegionNorthern North Sea
Year2024
Problem

New filter-separator penetrations in an FPSO fan house needed stiffening, and the stiffening had first been designed as welded.

What came in

Point cloud data, and the manufacturer's data for the filters, which the penetrations had to be sized for.

What we did

Redesigned the stiffening from welded to bolted and blind-bolted connections so no hot work was needed offshore. Checked the connections to EN 1993-1-8 and the plate for strength and buckling. Developed concept options for protecting the units from the crane.

What went out

A calculation report, fabrication drawings and a 3D model, with concept sketches for the protection options.

Codes

EN 1993-1-8, BS 5950-1 (blind bolts).

Our part

Design and calculations; check of the drawings.

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