Review of Cabling Techniques and Environmental Effects Applicable
Review of Cabling Techniques and Environmental Effects Applicable
Review of Cabling Techniques and Environmental Effects Applicable
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This section is divided into 2 sub-sections as follows:<br />
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●<br />
Cable types <strong>and</strong> installation techniques<br />
A review <strong>of</strong> all cable burial methods employed by all industries worldwide to<br />
protect subsea cables Sections 3.8.1 to 3.8.5 inclusive; <strong>and</strong><br />
A review <strong>of</strong> alternative cable protection methodologies such as rock dumping,<br />
concrete mattresses, fronds, grout bags etc. Section 3.8.6.<br />
Each cable protection method is described in detail together with explanations<br />
<strong>of</strong> which methods are commonly employed for varying seabed condition.<br />
Illustrations <strong>and</strong> figures for the methods <strong>and</strong> equipment are provided to illustrate<br />
the methodology under review.<br />
3.8.1 CABLE BURIAL METHODS<br />
There are a diverse range <strong>of</strong> cable burial machines available in the market<br />
capable <strong>of</strong> burying <strong>and</strong> protecting <strong>of</strong>fshore cables. This section <strong>of</strong> the report<br />
presents <strong>and</strong> describes these cable burial machines whilst also indicating the<br />
range <strong>of</strong> application <strong>and</strong> capabilities <strong>of</strong> each machine. This is always a subjective<br />
<strong>and</strong> sometimes controversial topic, as the performance <strong>of</strong> a cable burial machine<br />
in the <strong>of</strong>fshore environment can vary from the supplier/owner specification<br />
which can tend towards more optimistic performance criteria. Therefore,<br />
the performance statements in this section <strong>of</strong> the report are based more on<br />
performance observed in the field by the authors <strong>and</strong> independent associates<br />
consulted, as opposed to the published performance criteria.<br />
In order to allow a comprehensive review <strong>of</strong> the various cable burial machines,<br />
<strong>and</strong> to be able to investigate the environmental effects associated with each<br />
machine, four categories have been established for the cable burial machines:<br />
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●<br />
●<br />
●<br />
Cable Burial Ploughs;<br />
Tracked Cable Burial Machines;<br />
Free Swimming ROVs with Cable Burial Capability; <strong>and</strong><br />
Burial Sleds.<br />
All <strong>of</strong> the cable burial methods <strong>and</strong> cable protection methodologies which are<br />
described are used on a worldwide basis <strong>and</strong> on all different types <strong>of</strong> subsea<br />
cable systems.<br />
Table 3.5 sets out the various burial method options associated with each cable<br />
burial methodology <strong>and</strong> also provides a summary <strong>of</strong> the mode <strong>of</strong> operation.<br />
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