Case Study
INSTALLING TWO LARGE IMPRESSED CURRENT ANODE SLEDS ON A SHELF PLATFORM
THE PROBLEM In January 2013, Deepwater Corrosion Services retrofitted an eight- leg, fixed steel jacket in the Gulf of Mexico with two RetroBuoyTM impressed-current cathodic-protection (ICCP) sleds. Sitting in about 300ft of seawater, the platform’s CP life will be extended by 20 years. INSTALLATION Using a dive-support vessel, both Retrobuoy systems were installed in two days offshore. LOCATION ON SEAFLOOR In order to protect the jacket evenly, one RetroBuoy was put on bottom approximately 150 feet away from the northeast corner of the platform. The other was installed approximately 150ft away from the southwest corner. The cables from the Retrobuoy were unreeled from a deck-mounted winch on the vessel and laid in a predetermined path on the seafloor. The pulling end of the cabl