Canisters High Silicon Cast Iron Anodes
The prepacked anodes are used in area with high water table or where it is difficult to install loose coke backfill which is normally provided around anodes to:
- Reduce the resistance of anode
- Extend the life of anode
- Improve the contact between anode and surrounding soil
Canisters are pre-packed anodes. For convenience and easier installation, anodes are installed in a spirally wound 0.65 mm thick galvanized steel canister. The canister is packed firmly with metallurgical coke or calcined petroleum coke to ensure even current transfer from the anode.
Unless proper care is taken to ensure good contact between canister and native soil, abnormally high resistance will occur in cases where prepacked anodes are installed to reduce the resistance of anode bed in hard and rocky grounds.
The galvanized steel canisters are biodegradable and will corrode in service and used as transit package only. It should be stored in a dry place before installation to avoid corrosion and perforation.
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