1 Scope

1.1 These requirements cover metallic and composite primary carrier, secondary containment, and integral primary/secondary pipe systems (pipe and fittings) intended for underground use in distribution and venting applications of petroleum-base flammable and combustible liquids, alcohols, and alcohol-blended fuels as identified in this outline.

1.2 The piping covered by these requirements is intended to be installed and used in accordance with the Flammable and Combustible Liquids Code, NFPA 30, Code for Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A, and applicable Federal and State regulations for underground piping.

1.3 These requirements cover completely metallic and composite metallic/nonmetallic pipe constructions with manufacturer-supplied fittings for underground use only. The products covered by this outline have been evaluated for assembly in normal soil applications by qualified persons in accordance with the manufacturer’s instructions.

1.4 The products covered by this outline have not been evaluated for applications in sumps (more than 12 inches (30.5 cm) from sump walls), as connector pipe (between underground pipe and dispensing device), aboveground or marine use, or other applications exceeding ambient temperatures of 75 °F (23 °C).