Combustible Liquid Tank Accessories

UL Standard Edition 10 Published Date: November 13, 2025 ANSI Approved: November 13, 2025 SCC Approved: November 13, 2025

Scope

001800-000000-000000

1 Scope

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. 1) Flammable and Combustible Liquids Code, NFPA 30;
2. 2) Code for Motor Fuel Dispensing Facilities and Garages, NFPA 30A;
3. 3) Standard for the Installation of Oil-Burning Equipment, NFPA 31;
4. 4) Uniform Fire Code, NFPA 1;
5. 5) International Fire Code published by the International Fire Council; and/or
6. 6) Other applicable federal and state regulations for combustible liquid tank accessories.
b) In Canada:
1. 1) National Fire Code of Canada, Part 4;
2. 2) CSA B139 Series, Installation code for oil burning equipment;
3. 3) CCME PN 1326, Environmental Code of Practice for Aboveground and Underground Storage Tank Systems Containing Petroleum and Allied Petroleum Products; and/or
4. 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.

Summary of Topics

Summary of Topics s180_10_sum.html

Summary of Topics

This new Tenth Edition of ANSI/CAN/UL/ULC 180 dated November 13, 2025 incorporates editorial changes including renumbering and reformatting to align with current style, and includes the following changes in requirements:

– UV Resistance for indoor-use-only rated products; 16.3.1

– Updated Standard References in the Scope; 1.3, 1.4

– Style Manual Updates and Editorial Corrections; 3, 4.4, 4.5(b), 4.11, 10.2, 12.2.1, 12.7.1, 14.3.2, 15.2.1, 16.2.1(c), 16.3.1(c); 20.1(c)

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Below is a list of UL Standards referenced in UL 180

Standard	Edition	Title
80	12	Steel Tanks for Oil-Burner Fuels and Other Combustible Liquids
565	6	Liquid-Level Gauges for Anhydrous Ammonia and LP-Gas
746C	7	Polymeric Materials - Use in Electrical Equipment Evaluations
969	6	Marking and Labeling Systems
971	2	Nonmetallic Underground Piping For Flammable Liquids
971A	2	Outline of Investigation for Metallic Underground Fuel Pipe
1238	7	Control Equipment for Use with Flammable Liquid and LP-Gas Dispensing Devices
1310	7	Class 2 Power Units
5085-1	1	Low Voltage Transformers - Part 1: General Requirements
5085-3	1	Low Voltage Transformers - Part 3: Class 2 and Class 3 Transformers
60950-1	2	Information Technology Equipment - Safety - Part 1: General Requirements
62368-1	4	Audio/Video, Information and Communication Technology Equipment - Part 1: Safety Requirements

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Standard

Edition

Title

Steel Tanks for Oil-Burner Fuels and Other Combustible Liquids

331C

Outline of Investigation for Fuel Filtration Units

343

Pumps for Oil-Burning Appliances

2080

Standard for Fire Resistant Tanks for Flammable and Combustible Liquids

2258

Standard for Aboveground Nonmetallic Tanks for Fuel Oil and Other Combustible Liquids

Combustible Liquid Tank Accessories

$505.00-$1,258.00

Revisions and Related Documents

Below is a list of UL Standards referenced in UL 180

UL 180 is referenced in the following list of UL Standards

Combustible Liquid Tank Accessories

1 Scope

Summary of Topics

$505.00-$1,258.00

Revisions and Related Documents

Below is a list of UL Standards referenced in UL 180

UL 180 is referenced in the following list of UL Standards

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