KBK Now Offering UL 142 Listed Tanks

Ensuring Safe Storage for Flammable Liquids

KBK has received authorization from Underwriters Laboratories (UL) to  manufacture steel aboveground tanks for flammable and combustible liquids to the UL 142 Tenth Edition Standard and labeling these tanks as UL listed.

Why UL 142?

When it comes to storing flammable liquids, safety is paramount. Industries and businesses that handle such substances need reliable and secure storage solutions that comply with stringent safety standards. One such standard is UL 142, which sets the criteria for designing and manufacturing above-ground steel storage tanks for safe storage of flammable and combustible liquids.

UL, short for Underwriters Laboratories, is a global safety certification company that sets industry standards to ensure the safety and performance of various products. UL 142 is a specific standard that pertains to above-ground steel storage tanks, intended for storing flammable and combustible liquids. This standard was developed to provide guidelines for manufacturers to design, construct, and test these tanks, ensuring their safety and integrity.

steel aboveground tanks for flammable and combustible liquids

Key Features of UL 142 Listed Tanks:

Material and Construction

UL 142 Listed tanks are constructed from high-quality carbon or stainless steel to provide durability and prevent leaks or failures. The tanks are designed to withstand internal and external pressures associated with the stored liquids.

Welding Standards

The welding processes and standards for UL 142 tanks are precise and rigorous, ensuring the integrity and strength of the tank’s seams and joints. This minimizes the risk of leaks and enhances overall safety.

Leakage Prevention

UL 142 Listed tanks incorporate measures to prevent leakage, minimizing the potential for environmental contamination and hazards to personnel. Leak detection systems and secondary containment provisions are often part of these tanks’ designs.

Corrosion Resistance

Tanks compliant with UL 142 undergo corrosion resistance testing to ensure their longevity and to safeguard against the corrosive nature of some stored liquids.

Variety of Designs

Each tank type may be fabricated in a combination of various shapes (cylindrical, rectangular or obround) and orientations (horizontal, vertical) with or without multiple compartments. Many UL 142 tanks are designed for top-loading, making the process of filling the tanks safe and efficient. The top-loading design also prevents spills and enhances operational convenience. UL tanks can also come with a dike.

Venting and Pressure Relief

Adequate venting and pressure relief mechanisms are integral to UL 142 Listed tanks, preventing excessive pressure buildup that could lead to potential hazards like tank rupture or explosion.

Capacity and Configurations

UL 142 tanks come in various capacities and configurations to suit different storage needs, ranging from small tanks for private use to large tanks for industrial applications. KBK can manufacture any size tank and is especially set up to build large tanks.

Compliance with Codes and Regulations

UL 142 Listed tanks comply with local and national codes and regulations, ensuring that they meet safety standards established by relevant authorities.

UL 142 Steel Tanks

Applications of UL 142 Listed Tanks

UL 142 Listed tanks find applications in a wide range of industries, including but not limited to:

– Petroleum industry for storing gasoline, diesel, and other fuels.

– Chemical industry for storing various flammable and combustible liquids.

– Manufacturing industry for storing industrial oils, lubricants, and solvents.


UL 142 Listed tanks play a vital role in ensuring the safe storage of flammable and combustible liquids across various industries. Their adherence to stringent safety standards, quality construction, and leakage prevention measures make them a reliable choice for businesses seeking secure storage solutions.

When considering storage options for flammable liquids, choosing UL 142 Listed tanks is a step toward safeguarding both your assets and the environment. Always ensure compliance with local regulations and consult professionals for the best-suited storage solutions for your specific needs.

1.2 – Each tank type may be fabricated in a combination of various shapes (cylindrical, rectangular) and/or orientations (horizontal, vertical) with or without multiple compartments, as covered in this Standard.

1.3 – These tanks are intended for installation and use in accordance with the Flammable and Combustible Liquids Code, NFPA 30; the Standard for Installation of Oil-Burning Equipment, NFPA 31; the Code for Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A; the Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines, NFPA 37; the Uniform Fire Code, NFPA 1; and the International Fire Code published by the International Code Council.

1.4 – The tanks covered by these requirements are fabricated, inspected and tested for leakage before shipment from the factory as completely assembled vessels.