ANSI/CAN/UL/ULC 180:2025

Combustible Liquid Tank Accessories - Published Date: November 13, 2025

1.1 This Standard covers construction and performance requirements for the tank accessories identified in 2, for use on atmospheric aboveground tanks not exceeding 19,927 L (5,000 U.S. gal) which are intended for the storage and supply of heating fuels for oil burning equipment, diesel fuels for compression ignition engines, motor oils (new or used) for automotive service stations, and similar combustible liquid applications.  In addition to this Standard’s traditional safety requirements for tank accessories that primarily evaluate functional operation, structural integrity, and mitigate fire and 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 included in Annex B.  1.2 These requirements cover the following tank accessories intended for installation in, on or connected to the storage tank or supply tank in accordance with the manufacturer's instructions:  a) Liquid Level Gauges – mechanical float, low-voltage electric, or other types with integral or remote indicators;  b) Fill Signal Devices –indicating devices with audible and/or visual signals, including "whistle vent” alarms;  c) Aboveground Piping Systems – aboveground pipe and fittings for tank fill & venting and supply of utilization equipment, including flexible hose; and  d) Fill Pipe Covers & Vent Pipe Caps.  1.3 These requirements do not cover any tank accessories for products covered by the requirements of:  a) UL 565, Standard for Liquid-Level Gauges for Anhydrous Ammonia and LP-Gas for electrical liquid level gauges for flammable liquid tanks;  b) UL 1238, Standard for Control Equipment for Use with Flammable Liquid and LP-Gas Dispensing Devices, and CSA C22.2 No. 61010-1, Safety requirements for electrical equipment for measurement, control, and laboratory use – Part 1: General requirements, for electrical fill signal devices for flammable liquid tanks;  c) UL 971, Standard for Nonmetallic Underground Piping for Flammable Liquids, UL 971A, Standard for Metallic Underground Fuel Pipe, or ULC S679, Standard for Metallic and Nonmetallic Underground Piping for Flammable and Combustible Liquids, for underground piping systems, or UL/ULC 2039, Standard for Flexible Connector Piping for Flammable and Combustible Liquids, or for flexible connector pipe;  d) UL 1238, Standard for Control Equipment for Use with Flammable Liquid and LP-Gas Dispensing Devices, and ULC S675.1, Standard for Volumetric Leak Detection Devices for Underground and Aboveground Storage Tanks for Flammable and Combustible Liquids, or ULC S675.2, Standard for Nonvolumetric Precision Leak Detection Devices for Underground and Aboveground Storage Tanks and Piping for Flammable and Combustible Liquids, for leak detection devices for flammable liquid tanks;  e) UL/ULC 2583, Standard for Fuel Tank Accessories for Flammable and Combustible Liquids, for fill pipe covers, pressure vacuum vents or emergency vents for flammable liquid tanks;  f) UL/ULC 2583, Standard for Fuel Tank Accessories for Flammable and Combustible Liquids, for spill containment devices for flammable liquid tanks;  g) UL/ULC 2583, Standard for Fuel Tank Accessories for Flammable and Combustible Liquids, for overfill prevention devices for flammable liquid tanks;  h) UL/ULC 331, Standard for Strainers for Flammable and Combustible Liquids, Anhydrous Ammonia and Non-potable Water, for filters and strainers for flammable and combustible liquids; or  i) UL/ULC 1369, Standard for Aboveground Piping for Flammable and Combustible Liquids, for requirements applicable to larger diameter piping for flammable and combustible liquids intended for motor vehicle fueling and generator supply applications.  1.4 The products covered by this Standard are intended for installation and use in accordance with the applicable Codes and Regulations as determined by the Authority Having Jurisdiction (AHJ), such as:  a) In the United States:  1) Flammable and Combustible Liquids Code, NFPA 30;  2) Code for Motor Fuel Dispensing Facilities and Garages, NFPA 30A;  3) Standard for the Installation of Oil-Burning Equipment, NFPA 31;  4) Uniform Fire Code, NFPA 1;  5) International Fire Code published by the International Fire Council; and/or  6) Other applicable federal and state regulations for combustible liquid tank accessories.  b) In Canada:  1) National Fire Code of Canada, Part 4;  2) CSA B139 Series, Installation code for oil burning equipment;  3) CCME PN 1326, Environmental Code of Practice for Aboveground and Underground Storage Tank Systems Containing Petroleum and Allied Petroleum Products; and/or  4) Provincial or other Regulations.  1.5 Except for optional Climate Change Adaptation requirements in Annex B, these requirements do not cover special evaluations for resistance to, or use after, earthquakes, floods, high wind events, or other natural disasters; or resistance to vehicle impact.  NOTE: See the Note at the beginning of Annex B for further information on the terms "Adaptation” and "Mitigation”, as they pertain to Climate Change.  1.6 These requirements do not cover evaluation of either resistance to, or emission of, electromagnetic interference, or compliance with Federal Communications Commission (FCC) or Industry Canada Department of Communications regulations for electrical products with local or remote signal features, or the effectiveness of optional wired or wireless signal communications to remote service providers or central station monitors.  1.7 These requirements do not cover any applications with flammable liquids, or for electric gauging or signaling, use in hazardous (classified) locations, or waste oils that may contain high levels of contaminants and/or flammable liquids.  1.8 These requirements do not cover the use of accessories with waste oils or other combustible liquids with different physical or material compatibility properties than they are evaluated for, but do cover use with bio diesel blends up to 20 %, or up to 100 % bio diesel if optionally tested.