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External Protection
External cathodic protection is applied to the
underside of tank bases using impressed cathodic protection systems. Various anode configurations are available such as Griid or
Mesh systems which are usually installed before the tank is constructed.
For existing tanks anodes can be installed around the tank periphery.
Reference Electrode are usually provided to monitor and/or control the system.
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Internal Protection
Internal cathodic protection is applied to the
tank internal surface using either Sacrificial
or Impressed Current systems.The choice of system is largely determined
by the product through other factors are taken
into consideration.Anode system can be sither weided in place,
suspended or screwed in position through
welded mountings / bosses.
Pipeline Canister Anode
Pipeline cathodic protection systems are
designed and supplied to protect all types of
pipeline whether buried, submerged, bare or
coated. Usually protection current is provided
either by distributed impressed current
anodes, traditional horizontal or vertical
deepwell groundbeds.Where the soil resistivities and current
demands are low protection can be provided
using sacrificial anodes.Typically these will
be the prepackaged magnesium type.
Insulation Qasket Set
To prevent the drain of cathodic protection
current to other structures it is necessary to provide Insulating Gasket Sets at connection to and from the pipeline. Such joint are
commonly known as Insulation Flanges or I/Fs.I/Fs comprise of special insulation gaskets, bolt sleeves and washers, the precise materials
being selected to suit the product in the pipe.
Cathodic Protection for Tubular Piles
Cathodic Protection for Marine Jetty
Structures can be provided using either Impressed Current or Sacrificial Anode Systems.
CP for Sheet Piles
Cathodic protection system can be installed
retrospectively to control the rates of corrosion
on existing structures
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Cumberland Cathodic Protection Limited 
A Subsidiary of Al-Dorra Petroleum Services