Repair and Splicing of a 145 kV High-Voltage Submarine Cable
A highly technical project in the United States focused on identifying, removing, and replacing failed joints.
Advanced engineering focused on identifying, removing, and replacing failed joints.
A ground fault in high-voltage submarine circuits represents one of the most critical contingencies for any energy operator. The logistical complexity of working in aquatic environments, combined with the pinpoint precision required to handle 145-kV cables, demands an immediate technical response to prevent millions in losses due to circuit downtime and the risk of environmental contamination.
The project involved resolving a phase-to-ground fault identified in Phase B1 of the circuit, which consists of two cables per phase and includes two outdoor terminations and two splices per phase. Restoration activities: Removal and replacement of the defective splice identified during testing and inspections. Splicing of two joints in a 145-kV submarine cable.
We carried out a highly technical project in the United States focused on identifying, removing, and replacing faulty splices. Using precision diagnostic testing and state-of-the-art splicing techniques, we restored the integrity of the dual-cable-per-phase circuit, ensuring operational continuity and extending the service life of the submarine cable system in accordance with international safety standards.
Technical Scope
Diagnosis of Insulation Failures
Management of High-Voltage Joints
Handling of External Terminals
Dielectric Withstanding Voltage Tests
Restoration of Critical Power
No incidents reported.
The operation was carried out in accordance with corporate HSE policies and project-specific risk management plans.
