Fabrication group New Industries has completed its work schedule on the subsea manifold now installed on the Chevron-operated Big Foot field in the US Gulf of Mexico in a water depth of 1,280 m (4,200 ft).

The new intermediate manifold was installed in Green Canyon Block 597 for Enbridge Offshore Facilities, to provide a lateral export pipeline for the Chevron-operated Big Foot field. New Industries carried out the fabrication, inspection, coating, testing, delivery and installation of the manifold, which weighs 173 tons. The testing work included gauging of all four primary piping assemblies and corresponding hubs, hydrostatic pressure testing, continuity verification between all anodes and the structural assembly, and weigh and centre of gravity measurements.

The structure consists of four 20-inch subsea connectors and three 20-inch subsea valve assemblies. Two of the 20-inch assemblies will be used in future to connect a 20-inch pipeline end termination on the Big Foot Export Lateral Pipeline into the Amberjack-Tahiti pipeline system in the GoM.

This is the first intermediate subsea manifold on this scale that New Industries, founded in Morgan City, Louisiana in 1996, has completed.