Sylwin Alpha ICCP Retrofit

Technical Solution
The implemented solution centers around the Cable Access Tower located on the north side of the platform. The primary lifting equipment used for cable pull-in operations is installed on the first floor of this structure. Thetopside ICCP system includes all equipment housed within the platform, while the subsea ICCP components fall under the responsibility of Lot 2. For the electrical installation, Conbit deployed a combination of in-house electricians and external specialists to ensure efficient execution of all works.

Key Challenges
Several challenges were encountered throughout the project. The mechanical operations required close coordination with divers performing subsea tasks, with communication routed indirectly via the dive master on the support vessel. This added complexity to operational alignment. On the electrical side, the removal of existing cables and installation of new systems required routing through predefined structural openings, necessitating careful planning and procurement of suitable materials. A critical overall constraint was the limited weather window for offshore subsea operations, which directly influenced the project schedule and completion timeline.

Equipment and Resources
Specialized equipment was selected to meet project constraints. For cable pull-in activities, a compact wire rope pulling machine with a capacity of 6.4 metric tons was utilized, chosen specifically to accommodate restricted access through platform openings and installation within the Cable Access Tower. Electrical installation activities made use of movable scaffolding, engine hoists for handling power supply unit cabinets, and standard electrical tooling to facilitate safe and efficient execution.

Project Evaluation and Outcome
The project concluded with the successful completion of all topside installation works by Conbit and Deepwater. While the technical execution met high standards, communication between stakeholders and with offshore teams presented challenges that could be improved in future projects. Additionally, certain design aspects of the V-string and dunker cable systems required adjustments during execution, leading to additional effort. Despite these challenges, the final installation was completed to a high professional standard, seamlessly integrating with the existing platform systems to the extent that the client could not distinguish the new installation from the original infrastructure.