CAN/ULC-S603-14 Standard for Steel Underground Tanks for Flammable and Combustible Liquids

National Standard of Canada. The Standards Council of Canada. Underwriters Laboratories of Canada (ULC). This Fourth Edition National Standard of Canada is based on, and now supersedes, the Third Edition ULC-S615-2000. Approved by October 2014. 68 p. Except as described in Clause 1.7, these minimum requirements cover single and double wall cylindrical steel, non-pressure tanks of the horizontal type that are used for the underground storage of flammable liquids and combustible liquids, that are compatible with the material of construction.
These minimum requirements cover double wall tanks with provision for leak detection monitoring of the interstice between the walls.
This Standard also provides design criteria for integral connections (connection rings/collars) for spill containment sumps or manway risers.
These minimum requirements cover tanks, which are fabricated, inspected and tested for leakage before shipment from the factory as completely assembled vessels