DEEPWELL ANODE INSTALLATION – IMPRESSED CURRENT CATHODIC PROTECTION (ICCP)

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Impressed current anodes - For uncoated or larger structures galvanic anodes may not be an efficient nor economical choice. Impressed current anodes use an external power source to provide consistent protective current to the structure. These anodes consist of Iron, Graphite or Platinum coated Titanium alloys.

Conductive (carbon) backfill - placed around impressed current anodes to lower the anode resistance-to-earth, decrease anode polarization and increase the anode life.

Rectifier - What is commonly referred to as a rectifier is actually a transformer-rectifier unit. It contains a step-down transformer, a means of adjusting the voltage, a rectifier to change AC to DC, and various controls and other components depending on usage.

Anode Junction Box - The positive direct current from the rectifier is connected to each anode wire at the anode junction box. It also provides access for the measurement of the effectiveness of a cathodic protection system.

Exothermic welding materials - Used for making electrical connections of copper wire to steel and cast iron surfaces for cathodic applications.

Reference electrodes(half-cells) - Important devices that permit measuring the potential of a metal surface exposed to an electrolyte. An example is a structure-to-soil potential measurement.

Cathodic protection cable - A thick, polyethylene insulated single copper conductor designed for direct earth burial and submerged installations.

Bond straps - Commonly installed across joints to decrease electrical resistance and maintain continuity along the pipeline.