Consortium has awarded FES International two contracts to supply its CALM buoy swivels.
The swivel technology is said to allow the buoy to rotate fully while maintaining a leak-free joint between the subsea pipelines and vessel, during transfers of fluids such as oil, LPG, and water.
One of the contracts concerns a turret-type CALM buoy for the Balongan upgrade project in 26 m (85 ft) of water offshore the northeast coast of West Java.
The buoy is part of a new single-point mooring system (SPM), designed to accommodate up to 165,000 dwt vessels for crude oil offtake.
For Nigeria’s Escravos export system project, two turret-type CALM buoys will become part of a new 42-km (26-mi), 30-in. pipeline extending from the Escravos Terminal to the two-off SPM facilities.
The buoys will be stationed in water depths of up to 30 m (98 ft) as part of a new SPM system designed to accommodate vessel sizes up to VLCCs. It will be capable handling up to 30,000 b/hr during loading/unloading operations.
FES International Managing Director Rob Anderson said: “One of the major advantages of the CALM buoy swivel is that it enables the replacement of seals on board without the requirement to bring the main buoy into a repair yard, therefore significantly reducing maintenance downtime and being offline for long periods of time.
“It also includes a leak detection system…with instrumentation to allow the user to monitor the seal performance; an integrated pressure transmitter to monitor the pressure during loading; and an integrated electrical slip ring to allow electrical cable connections from subsea to topside.”
In addition, FES is supplying chain stoppers for the Balongan mooring system and hydraulic umbilical and for the Escravos mooring system, and a hydraulic/electric umbilical and process pipework and valves for the latter’s CALM buoys.
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