Nexans completes repair of 200 MW Malta-Sicily interconnector
Nexans Inspection, Maintenance and Repair (IMR) team has completed the
repair of a 95km subsea cable
linking Malta with Sicily,
ensuring the continuity of power supply to the island of Malta. The Interconnector
was damaged at the end of 2019 by a ship anchor, causing a nationwide blackout
and a series of power cuts in subsequent weeks.
Nexans Polar King, a 110 meter-long modern multipurpose subsea vessel held
on long-term charter inspected the cable damage initially. The vessel’s
remotely operated vehicle (ROV) identified the anchor damage at approximately
25km offshore from Sicily and found the cable cut in two at a depth of
Nexans Capjet water-jetting system was used to expose the cable that had
been buried into the seabed. The damaged part of the cable was then cut
out and the ends sealed off to prevent further damage.
Inspecting the spare length of cable and joints, held in store by Enemalta,
to ensure their usability was a critical part of the operations.
In mid-February, the cable repair vessel was mobilised to Malta to load
the spare cable. A section of the spare cable was spliced in at the damaged
area in mid-March 2020, to enable the interconnector
to be re-energized successfully, only three months after the damage.
The Polar King will return shortly to use its Capjet water-jetting system
to trench the repaired cable section to a depth of approximately 1.5m.
‘Nexans was extremely responsive and led both the planning and execution
of the repair. They understood our critical need to get this interconnector
fixed for our electricity supply and they delivered!’, commented Enemalta
plc CEO Jason Vella.
Nexans manufactured and installed the Malta-Sicily