You will require approval if you intend to use a corrosion protection system. A corrosion protection system (CPS) is a system which applies an electrical current to a metallic (primary) structure to protect the structure from corrosion caused by its contact with soil or water and include:
- cathodic protection systems
- drainage bonds
- boosted drainage bonds
- cross bonds.
You will be required to use a corrosion protection system if you own an underground structure that needs protection from stray current, for example, electricity networks, railways, gas companies, petrol storage tanks, and ports.
Please consult the Contact Officer in the first instance, as the requirement to obtain an approval will depend on your specific circumstances.