Cathodic protection system is an important method of preventing corrosion in underground pipelines, storage tanks, petroleum pipelines, offshore and onshore platforms etc. Cathodic protection (CP) is a technique used to control the corrosion of a metal surface. Impressed current systems utilize an external power source that provides protective current to mitigate corrosion activity.

MMO or Platinised coating is an excellent electrical conductor and giving well chemical stability, when it will be coated on Titanium or Niobium base, even in very low pH environments. MMO coating greatly prolong the life of the anode (low wear rate) and provide excellent chemical corrosion resistance such as acid condition.

GI Canister anode is filled with petroleum coke fill that improvise the conductivity of MMO Coated Tube, Strip or wire where the soil not having conductivity. Petroleum coke fill with low sulfur will much suits for the high resistivity soil. Canister anodes are installed vertically besides the oil pipes to avoid corrosion and horizontally installed in Tank bottoms. After some time the GI pipes are get rusted and the petroleum coke fill will be inside the soil that keeps the conductivity.

Applications:

  • Shallow vertical and horizontal surface ground beds.
  • Underground storage tanks.
  • Above ground storage tanks.
  • Pipelines.

Different types of anodes in canister anode is MMO wire, tube, mesh, strip anode which is comprised of a precious metal oxide coating applied to a titanium base. The metal oxide coating is completely stable, and does not allow the object to corrode which we need to protect.
The stable anode element passes current to a highly conductive calcined petroleum coke breeze. This backfill is well compacted inside a galvanized steel canister. To allow moisture to quickly migrate to the coke breeze for increased electrical conductivity, the MMO anode element is electrically connected to the steel canister - thereby accelerating the canister corrosion rate once the anode has been installed and energized.

Galvanised canister anode

Advantages:

  • Twice the life
  • Unbreakable
  • Light weight
  • Easier to install
  • Narrower trench
  • Easy to centralize
  • Reduce excavation and drilling cost.

For more details visit these links:

www.cpanode.com,www.tiaanostore.in,www.tiaano.com

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