Cable protection system | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-08

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Cable_protection_system


00:01:32 1 History
00:03:15 2 Design considerations
00:03:38 2.1 Design life
00:03:56 2.2 Overbending of cable
00:04:27 2.3 Fatigue of CPS/cable within
00:06:16 2.4 Seabed stability
00:06:45 2.5 Suspension strength
00:07:20 2.6 Installation
00:07:41 2.7 Removal/Reinstallation
00:08:19 3 Bend restrictors
00:09:09 4 Bend stiffeners
00:09:57 5 Other systems
00:10:20 5.1 Applicable Standards



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SUMMARY
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A cable protection system (CPS) protects subsea power cables against various factors that negatively impact on the cable lifetime, normally used when entering an offshore structure.  When a subsea power cable is laid, there is an area where the cable can be subjected to increased dynamic forces, which the cable is not necessarily designed to survive over the lifetime of the installation.
Cable protection systems are used to allow the specification, and thus cost, of a subsea power cable to be reduced, by removing the need to include additional armoring of the cable.  The resulting cables can be produced more cheaply, whilst still prividing the 20 years + lifetime required.
Offshore windfarm developers in particular have adopted the use of Cable protection systems due to the dynamic area where the cable comes from the seabed and enters the monopile/J-tube. This is in part due to the potential for localised scouring to occur near the structure.
A CPS generally consists of three sections, a Centraliser or Monopile interface, a protection system for the dynamic area, and a protection system for the static area.
The installation of J-Tubes for offshore renewable monopiles was viewed as a costly approach, and a 'latching' type of cable protection system which penetrates the outer wall of the monopile, via a specifically designed angled aperture enables the simplification of monopile design, and removes the need for additional works post pile driving which usually involved the use of divers. This approach is becoming the industry standard in monopile design, assisting developers to reduce their costs for construction.