Project Description

The MODEC Léopold Sédar Senghor FPSO

The Léopold Sédar Senghor FPSO is deployed in the Sangomar field (formerly SNE), about 100 km south of Dakar, Senegal. This development is the country’s first offshore oil project.

MODEC received the Front-End Engineering Design (FEED) contract for the FPSO in February 2019, and the purchase contract following the Final Investment Decision (FID) in January 2020.

The FPSO is permanently moored at a water depth of ~780 m using an external turret mooring system supplied by SOFEC, Inc., a MODEC group company.

The unit can process 100,000 barrels of crude per day, 130 million standard cubic feet of gas per day, 145,000 barrels of water injection per day, and has a minimum storage capacity of 1,300,000 barrels of crude.

CPC Engineering Work

CPC Engineering’s Senior Process Control Consultant worked closely with MODEC and Woodside Energy to perform control-loop tuning activities on the LSS FPSO.

The main objective was to tune available process loops according to a detailed list and a priority order identified by the client.

More than one third of all control loops were successfully tuned during Phase 1.

Secondary tasks performed by CPC included:

• Investigations to prevent severe upsets and equipment trips.
• Identification and correction of deficiencies in control loops, proposing direct fixes.
• Adjustments to general ICSS configuration parameters.
• Assessment of potential improvements to optimize control concepts.