CAN/ULC-S603.1-03

1. SCOPE 1.1 These requirements cover external corrosion protection systems on carbon steel underground storage tanks. The requirements are as follows: A Part 1 covers external corrosion protection using sacrificial anodes, electrical isolation and thin film dielectric coating (cathodic protected tank); B Part 2 covers external corrosion protection using dielectric fibre reinforced plastics or resins that are bonded to the tank (composite tank); C Part 3 covers external corrosion protection using dielectric secondary containment (jacketed tanks); and D Part 4 covers external corrosion protection using polyurethane (coated tank). 1.2 These external corrosion protection systems are intended to be installed, operated and maintained in accordance with the manufacturer's instructions. 1.3 These requirements cover external corrosion protection systems for steel tanks manufactured in accordance with the applicable requirements of ULC-S603, Standard for Steel Underground Tanks for Flammable and Combustible Liquids, which are used for the underground storage of flammable and combustible liquids such as gasoline, fuel oil, and similar products. 1.4 In addition to meeting the construction and performance requirements contained in ULC-S603, Standard for Steel Underground Tanks for Flammable and Combustible Liquids, construction of corrosion protected steel underground tanks shall comply with the applicable requirements of this Standard. 1.5 Tanks covered by these requirements are intended for installation and use in accordance with the requirements outlined in ULC-S603, Standard for Steel Underground Tanks for Flammable and Combustible Liquids and other documents such as: A Environmental Code of Practice for Underground Storage Tank Systems Containing Petroleum Products and Allied Petroleum Products, CCME EPC-LST-61E; B The National Fire Code; or C Other applicable regulations of the authority having jurisdiction. 1.6 Where applicable, each tank with an external corrosion protection system shall be provided with a corrosion protection repair kit applicable to its technology and the manufacturer's application instructions. NOTE: Refer to Appendices A and B for recommended practices.