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UNDERWATER MAINTENANCE/WELDING OF FPSO TAMARA TOKONI AT OYO OIL FIELD

Completed Oyo Oil Field, Offshore Nigeria February 2025

UNDERWATER MAINTENANCE/WELDING OF FPSO TAMARA TOKONI AT OYO OIL FIELD

The underwater maintenance/welding of FPSO Tamara Tokoni at Oyo Oil Field was carried out to ensure the integrity and efficiency of subsea structures....

Project Overview

The underwater maintenance/welding of FPSO Tamara Tokoni at Oyo Oil Field was carried out to ensure the integrity and efficiency of subsea structures. This project involved routine inspections, cleaning, and minor repairs to enhance operational safety and prevent potential failures in the offshore infrastructure.

Technology Used

Remotely Operated Vehicles (ROVs) – For high-precision underwater assessments.

Diver-Assisted Inspections & Repairs – For hands-on maintenance tasks.

Ultrasonic Thickness Gauging (UTG) – To detect material degradation.

High-Pressure Water Jetting – For biofouling and debris removal.

Project Status

Completed

Project Scope

Visual and Ultrasonic Inspection: Checking structural integrity of pipelines and subsea installations.

Biofouling Removal: Clearing marine growth affecting efficiency.

Anode Replacement: Ensuring effective cathodic protection.

Leak Detection & Minor Repairs: Identifying and sealing small leaks in subsea components.

Project Objectives

Conduct a detailed underwater assessment of critical structures.

Perform cleaning, corrosion control, and minor repairs.

Enhance the lifespan and efficiency of subsea equipment.

Ensure compliance with offshore maintenance regulations.

Challenges & Solutions

Strong Currents Affecting Stability: Scheduled dives during optimal conditions.

Marine Growth on Structures: Deployed effective cleaning techniques for thorough removal.

Impact & Outcome

Improved operational efficiency of offshore structures.

Prolonged the lifespan of critical subsea components.

Reduced risk of structural failures and environmental hazards.

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