Diving . Rov . Corrosion Control

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ATLANTIC MARINE BONGA FPSO CAISSON GUIDE ACFM INSPECTION

Atlantic Marine ACFM inspection was meant to identify any sections of the caisson guides for compromised structural integrity prior to installation of a caisson (intake pipe) on the starboard FWD of the FPSO. The inspection also involved metrology and accurate measurement by divers of the internal diameter of the caisson. This metrology was done using a simple piano-wire metrology system.


ATLANTIC MARINE BONGA FPSO RISER FLEX JOINT INSPECTION

Close visual inspection of the riser flex joint was done by Atlantic Marine divers. The flex joint body and receptacle casting inners were cleaned to remove marine growth. Four clock positions of the flex element and cover rubber was carried out to identify any areas of failure, damage, wear, tear or bulges. The riser throat was also inspected for any signs or indication of damage or deformity. All inspections by Atlantic Marine was conducted at sea water depths of 30msw.


ATLANTIC MARINE BONGA SPM CHAIN COMPARTMENT WELD INSPECTION

The SPM chain Rod Connecting Arm (RCA) support structure and its connection to the buoy body was inspected by Atlantic Marine divers using the company’s well tested diver intervention procedures. The welds between the RCA and buoy body were cleaned (marine growth removal was done using Atlantic Marine’s caviblast equipment) prior to inspection. Inspection was carried out to identify any indication of in-service fatigue or multi factorial stress anomalies on the welds.


ATLANTIC MARINE DIVERS MANUAL CLEANING

Atlantic Marine divers conducts the cleaning of marine growth using manual tooling (i.e. hand scrapers, wire brushes, hand axes etc.) when it is impossible to use other methods or machine tooling. Diver manual cleaning can suffice on a wide variety of marine growth types from soft algae to hard corals even if manual cleaning is most effective when cleaning soft marine growth. Atlantic Marine has successfully conducted manual cleaning to reveal CVI anomalies beneath the overlying marine growth which vary in density/thickness and composition. The cleaned surface achieved is not more than SA 1.0


ATLANTIC MARINE GRIT ENTRAINMENT

Atlantic Marine has effected a grit entrainment cleaning technique for achieving surface finishes of up to SA 2.5 which is a requirement for carrying out critical weld inspections (i.e. MPI). This method involves the use of applying pressurized air on grit through a grit pot. Atlantic Marine has used this cleaning technique on inspection campaigns in the Escravos field, Agip’s Agbara production platform refurbishment project and SOPC/GNPC Mr. Louie offshore platform refurbishment campaign.


ATLANTIC MARINE TWIN BRUSH CLEANING

Atlantic Marine has acquired the patented Armada Hull motorized Twin Brush Cleaning equipment. This equipment delivers a motorized cleaning technique used to achieve quick and efficient marine growth removal over large and flat surface areas (side plates and even bottom/underside surfaces). The twin brush is powered by a multi-purpose Hydraulic Power Unit which is easily adaptable to other tooling. The twin brush achieves a cleaning surface of SA 1.5. Atlantic Marine has used her twin brush unit on the Bonga FPSO/SPM and EA field for class IWS/UWILD campaigns.


ATLANTIC MARINE WATER JETTING

Atlantic Marine adopts and applies the required underwater cleaning technique and applicable pressure depending on the cleaning surface on which it is applied on and the surface finish required. Atlantic Marine has equipment capability for water jetting ranging from 2,000psi to 14,000psi and this has been applied in many project sites e.g. Bonga FPSO, EA field, CNL Escravos, Agip etc.


Atlantic Marine Anodes Inspection


Atlantic Marine DP A el 4m


Atlantic Marine FPSO B1


Atlantic Marine FPSO Reference Anode


Atlantic Marine FPSO SC4


Atlantic Marine FPSO STBD


Atlantic Marine FPSO B7