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What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?

What is AnodeFlex?


AnodeFlex is an impressed current, flexible cable anode for use in cathodic protection systems for buried structures. Placed alongside a pipe or other buried metal structure, AnodeFlex provides uniform cathodic protection to every point, with a minimum of interference from adjacent structures.

  • The four basic elements in the AnodeFlex system are:

What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion? 

  • 1. A high performance coke breeze, serving as the active matrix in which the anodic reactions take place.
  • 2. A copper conductor serving as a low resistance busbar to deliver the required current over considerable distance without incurring substantial longitudinal voltage drop.
  • 3. A special conductive polymer that seal the conductor from chemical attack, yet allows current to flow from the conductor to the environment all along its length.
  • 4. A fabric jacket to hold the coke breeze in place around de anode cable. This jacket is designed to resist electrochemical attack, but to allow current flow from de anode to the surrounding soil.

 

Installation

 

What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?

Installation of AnodeFlex is done using standard cable laying equipment, such as a hydraulic back hoe equipped with reel pay off equipment. A typical trench is only about 1 foot deep, and 6¨ wide, and no special backfill is required, Typical installation rates of 2 miles per day can be achieved.
AnodeFlex is supplied on a reel. A set of specially designed splice kits is available to handle in-line splices, branch off, and end terminations.

 

Why use AnodeFlex systems?

AnodeFlex is used to achieve effective and homogeneous cathodic protection over the entire surface of the buried structure. Cathodic protection current should not be supplied to high demand areas at the expense of remote parts of the structure. Homogeneous distribution therefore is more important than current output. 

What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?
 

AnodeFlex is a unique and cost effective way to keep the operation of a pipeline in compliance with cathodic protection DOT or other regulations.

The use of AnodeFlex on pipelines will eliminate many of the problems found with conventional groundbed anodes: 
 

Where are AnodeFlex systems used ?

 

One of the major uses of AnodeFlex is in rehabilitation of pipelines, where ageing and degrading coatings no longer provide adequate corrosion protection. Re-coating the pipe is a very expensive solution, often requiring to shut down the pipeline over an extended period of time. In addition, the pipeline operator is facing major problems of obtaining environmental permits and disposal of toxic materials.


The close interval survey shows the underprotected areas, caused by detoriating pipeline coating:


What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion? 

Increasing current output of existing groundbed anodes is on longer an option, since this will aggravate the problem by further disbonding of the pipe coating. 

Voltage increase of existing rectifiers:

 

What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?

Installation of additionnal groundbed. This does not solve the problem; still underprotected area´s remain. 

 

Installation of additional groundbed:

 

What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?


AnodeFlex offers a better, more cost effective, and environmental friendly approach to pipe rehabilitation. It is typically installed in the same right of way as the pipe, adjacent to the pipe, with only minimal disturbance of the environmet. 

Installation of the AnodeFlex sustem. It provides cathodic protection on every point without causing any under or overprotection.
 

 

AnodeFlex potantial curve:

 

What is Cathodic Protection Cable AnodeFlex How to Protect Corrosion?

 

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