Agbami FPSO scheduled a maintenance shutdown after approximately eight years of non-stop production. Critical aspects of the maintenance project were various repairs and replacements in the flare boom and on the flare tip access platform.
Chevron Nigeria Limited awarded Conbit the contract to replace the flare tip. However, the scope expanded during the preparation to include various flare stack maintenance activities.
Conbit was awarded this project because of its smart lifting solutions and its track record of experience in flare systems. This includes flare tip replacements and general flare stack maintenance.
The existing lifting davit on the flare tip platform was originally installed for flare tip exchange. It was so severely melted that it could no longer be used. Conbit suggested applying one of its own temporary modular lifting solutions to remove the damaged davit.
Conbit replaced both the HP and the LP flare tips. The governing piece weighs 3 tonnes, is 5 meters wide, and is approximately 3 meters high. It was mounted on an inclined flare boom of the Agbami vessel. They directly lifted the old and the new flare tips to and from a supply vessel positioned under the boom.
In addition to replacing the flare tips and the lifting davit, Conbit also performed other flare systems maintenance activities. They replaced the safety line along the stairs and the flare arrestors. Also, the team repaired C02 vent snuffing lines, heat detectors, and ignition system.
The project included replacing a 4-inch diameter seawater cooling line from the FPSO deck all the way up to the flare tip. Over that length, approximately 100 meters, they installed piping components weighing up to 80 kg and supports weighing up to 38 kg. Conbit used winches to move these parts.
Conbit completed the project safely and efficiently. Chevron especially valued Conbit’s proactive approach during all phases of the project.