1.1 This Standard sets forth minimum requirements for sacrificial magnesium and
zinc anodes and zinc reference electrodes which are intended for use in the cathodic protection
of steel underground tanks which have been coated and installed in accordance with the
requirements contained in CAN/ULC-S603.1, Standard for External Corrosion Protection
Systems for Steel Underground Tanks for Flammable and Combustible Liquids.
1.2 Requirements contained in this Standard apply to cored anodes of the following
types:
A High and standard potential magnesium anodes;
B Zinc anodes;
C Zinc reference electrodes; and
D Copper/copper sulphate reference electrodes.
NOTE: High potential magnesium anodes are intended for retrofit applications only and shall be
sized according to the specifications of the corrosion specialist in charge of the retrofit
application.