SUBMARINE CABLE

The off-shore oil extraction activity has been constantly  increasing consecuently  more and more  platforms are being installed all over the world.

To supply power and communication  for the extraction activity, it is necessary to interconnect the plataforms with subsea cables.

Power  and fiber optic cables are used  in the oil  industry to distribute electricity and data as well as to supply and monitoring summersible pumps.

Submarine cables are designed to withstand severe hambiental conditions in deep waters.

Inside the  core, the cable can allow different  types of  conductors for low and high voltage as well as fiber optic or a combination of them (composite cables)

A.Copper conductors are sealed to evoid water penetration  in the interstices of strand .

B.Medium and High Voltage  insulation  is dry cured XLPE-TR .

The optical element consist of an hermetically sealed stainless steel tube containing optical fibers.

The steel tube  provides all the  required protection for the fibers against hydrostatic pressure and mechanical compression stress and at the same  time serves as an effective hydrogen barrier.

Inside the tube optical fibers are surrounded by a water blocking compound (tixo tropic jelly).

The armor consist of asphalt impregnated galvanized steel wires and an overall HDPE jacket or individually HDPE insulated galvanized steel wires.

Both armoring construction are intented to protect the core of cable against longitudinal tensil stress and any mechanical  abuse during installation , operation  and repair conditions.

The hard HDPE jacket  represents an excellent mechanical protection and water  proof barrier .