AnodeFlex 3000-Cu Series Linear Anode System by Farwest Corrosion

Copper Core MMO Wire for Long-line, Flexible Impressed Current C.P. Systems

  • Description

    AnodeFlex 3000 is a long-life, flexible, wire anode, which can be placed remote to the target structure. Greater current output can be achieved on applications where close proximity anode groundbeds do not work.

    Key to the product's performance is the central, copper-core mixed metal oxide anode. The anode is powered by a # 8 AWG copper cable insulated with an inner layer of halar and outer layer of high molecular weight polyethylene. The unique construction of the anode and copper cable allows high current output with protection against low pH and chlorine attack.

    AnodeFlex 3000 can be placed remote to the steel surface to be protected, thereby maintaining the steel-to-soil "instant-off" potential in the required window of -850 mV (-950 mV if SRB's present) and -1200 mV.

    The central MMO wire and cable are surrounded by factory prepackaged, high-conductivity coke breeze, held in place by a porous, woven acid-resistant jacket. This arrangement avoids handling loose coke breeze and simplifies field installation. The improved current distribution increases anode efficiency and maintains a low resistance groundbed. On poorly coated pipelines where optimal polarization can no longer be achieved, AnodeFlex 3000 can often be installed as an alternative to expensive recoating. Both on single and multi-parallel pipelines, safe levels of polarization will be restored at every point. The system avoids difficult and costly field recoating and greatly reduces environmental disturbance.

    Anode Flex 3000-01 is delivered on long length spools. Because no additional coke breeze is required, the installation is as simple as laying a low -voltage power cable. Proven heat-shrinkable splice kits, with tee splices and end sealing caps, are available to complete any installation design.


    Product Features / Benefits

    • Anode can be remote to the pipeline
      Distributes current uniformly over total length.
      No over- or under-protected areas.
      Prevents accelerated coating disbondment.
      More effective and economical than a series of discrete anodes.

    • Pipeline Rehabilitation without Excavation
      A fraction of the cost of recoating.
      Environmentally friendly.
      No loss of revenue or supply interruptions.
      No safety problems associated with working on live lines.
      Far quicker, up to 1.25 miles (2 km) laying speed per day.

    • Long continuous circuit lengths
      67% fewer joints compared to conventional anode systems.
      Lower maintenance cost.

    • Flexible under tank bottom design
      Directional drill with no PVC, no backfill.
      Tight bend radius.
      Driving voltage is lower than conventional MMO.

    • Pre-packaged coke breeze
      Simplifies field installation.
      Installation with standard cable laying equipment.
      Fast, easy & cost effective.


  • AnodeFlex 3000 Construction

    Five basic elements:

    • Central Copper Bus Cable: #8 AWG Halar Insulated, serving as a low resistance busbar to deliver the required current over considerable distance without incurring substantial longitudinal voltage drop. Halar insulation seals the conductor from chemical attack.
    • Copper-Cored, Mixed Metal Oxide Anode (MMO): Provides low attenuation for reduced splicing, in combination with prepackaged coke breeze, offers a low resistance groundbed designed for a minimum life of 40 years.
    • Coke Breeze: Pre-packaged, high performance calcined petroleum coke breeze, serving as the active matrix in which the electrochemical reactions take place. Designed for min. 20 years service life at max. Current output of 656 mA/m (200 mA/ft).
    • Fabric Jacket: Integrated woven, acid resistant and porous jacket holding the coke breeze in place around the anode.
    • Protective Braid: Tough, porous, non-conductive protective braid enhancing the abrasion and damage resistance of the jacket.

    Maximum Temperature: 50ºC - 122ºF


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    CODENAMEDESCRIPTION
    Available on request Anodeflex 3020-Cu 20mA/ft (65mA/m) linear anode
    Available on request Anodeflex 3100-Cu 100mA/ft (328mA/m) linear anode
    Available on request Anodeflex 3200-Cu 200mA/ft (656mA/m) linear anode
    Available on request Anodeflex Accessories Tees, Splices and End Seals

     

  • AnodeFlex 3000 Typical Properties
      

    Copper Conductor

    Dimensions

    8 AWG per ASTM B-263

    Coke Breeze

    Fixed carbon
    Resistivity

    99.7% per ASTM D-172
    0.4 ohm-cm per G.L.C.-C-12A at 23ºC, 10 bar

    Fabric Jacket

    Weight
    Bursting strength
    Abrasion resistance
    Fluid resistance
    Chlorine resistance
    UV resistance

    200 g/m2 min, 229 g/m2 typical
    575 N per ISO 3303
    219 cycles to failure per ASTM D-4157
    Pass, 6-month immersion test
    Pass, 6-month immersion test
    55% tear strength loss per ASTM G-53,
    8 hrs @ 60ºC (140ºF), 4 hrs condensation @ 50ºC (122ºF)

     

    AnodeFlex 3000 Ordering Information
    AnodeFlex type products are available on a spool.
      

    Part Number

    Description

    AFLX 3000-02

    Copper-core MMO with copper conductor surrounded by pre-packaged high-conductivity coke breeze.
    Standard length 494 m ± 6 m (1620 ft ± 120 ft)

    AFLX-3000-CAP
    AFLX-3000-TEE
    AFLX-3000-SPLICE

    End seal kit
    Tee splice kit
    In-line splice kit