CAN/ULC-S667-11

1.1 This Standard sets forth the minimum requirements for metallic and composite primary carrier, secondary containment, normal vent and vapour recovery and integral primary/secondary pipe systems (pipe and fittings) intended for underground use in distribution and venting applications of petroleum-based flammable liquids and combustible liquids, alcohols, and alcohol-blended fuels as identified in this Standard. 1.2 For the purpose of this Standard, flammable liquids and combustible liquids mean gasoline, fuel oil, kerosene and diesel fuel, including gasoline with small amounts of additives such as detergents, solvents for detergents and anti-icing chemicals; diesel with up to 5% biodiesel and gasoline with up to 15% ethanol or methyl tertiary butyl ether (MTBE). 1.3 The piping covered by these requirements is intended to be installed and used in accordance with, but not limited to the following documents: A National Fire Code of Canada; B CSA B139, Installation Code for Oil-Burning Equipment; C CCME Environmental Code of Practice for Aboveground and Underground Storage Tank Systems Containing Petroleum and Allied Petroleum Products; and D Regulations of the appropriate authority having jurisdiction. 1.4 This Standard covers completely metallic and composite pipe constructions with manufacturer-supplied fittings for underground use only. The products covered by this Standard shall be evaluated for assembly in normal soil applications by qualified persons in accordance with the manufacturer’s instructions. 1.5 The products covered by this Standard have not been evaluated for applications in sumps (more than 300 mm from sump walls), as connector pipe (between underground pipe and dispensing device), aboveground or marine use, or other applications exceeding ambient temperatures of 23 °C.