1.1 This Standard sets forth the minimum requirements for steel contained tank assemblies that are used for aboveground storage of flammable and combustible liquids such as gasoline, fuel oil, or similar products with a relative density not greater than 1.0.

1.2 This Standard does not cover requirements for accessory devices and appurtenances such as overfill protection, spill containment and sumps.

1.2A This Standard does not cover open secondary containments with or without integral primary tanks per ULC/ORD C142.20.

1.3 The stationary installation and use of contained tank assemblies may be covered by the requirements of the authority having jurisdiction and may include by reference, but are not limited to:

1. A National Fire Code of Canada, Part 4;

2. B CSA B139, Installation code for oil-burning equipment; and

3. C CCME PN 1326, Environmental Code of Practice for Aboveground and Underground Storage Tank Systems Containing Petroleum and Allied Petroleum Products.

1.4 The Standard for the primary tank to be incorporated into these tank assemblies is identified in Subsection 1, The Primary Tank. As a result of revisions to that Standard published in 2019, in addition to traditional safety requirements for tanks that primarily evaluate functional operation, structural integrity, and mitigate fire & environmental hazards from loss of liquid containment under expected normal conditions; optional construction and/or performance requirements, and associated ratings, intended to address more severe conditions associated with the effects of Climate Change are now specified in an optional Climate Change Adaptation Appendix in each of those Standards