Ul 142 Double Wall Tank

What are the differences between ul 142 and ul 2085 standards.

Ul 142 double wall tank.

Ul 142 covers shop fabricated tanks only and does not cover portable tanks intended for transporting flammable or combustible liquids such as shipping containers or mobile use applications such as mounted on a trailer. If the tank is a double wall configuration then it has interstitial monitoring capabilities. Southern tank manufactures these tanks daily to the ul 142 standard as well as the steel tank institute f921 standard. There are a few key differences.

Horizontal tanks may be single or double wall construction. Sizes dependent on project specifications. Tanks are built to underwriters laboratories specification standard ul 142. Underwriters laboratories ul is an accredited developer of standards for product safety and performance.

For basic purposes manufacturers have worked to increase the design of those tanks that meet ul 2085 standards to ensure they offer further protection. The entire tank assembly primary tank secondary tank saddles is labeled ul 142. Openings are female national pipe thread fpnt. Type i double wall tanks are tight wrapped meaning there is intimate contact of the inner and outer tanks.

One type of tank covered under this standard is the double wall storage tank. Ul142 listed tanks are available in carbon steel or stainless steel with single wall and double wall configurations. All flameshield tanks employ a 360 outer wrap. The flameshield option is available on all ul 142 double wall aboveground steel storage tanks manufactured by highland tank.

The overwhelming majority of double wall tanks are the type i variety. Home double wall tanks ul 142 f921 tanks. Ul142 tanks are intended for. Custom sizes are available.

Each style tank may be fabricated cylindrical or rectangular horizontal or vertical with or without multiple compartments. Sized per ul requirements. A ul 142 double wall tank is equipped with 3 4 6 8 or 10 emergency vent opening for primary tank. Ul 142 horizontal double wall 12 000gal 96dia pdf pdf 169 86k ul 142 horizontal single wall 12 000gal 96dia dwg dwg 138 45k ul 142 horizontal single wall 12 000gal 96dia pdf pdf 504 19k.

Flameshield labeled tanks are manufactured to strict steel tank institute sti specifications and are subject to the sti s quality assurance program each tank carries the flameshield and swri 97 04 labels. For example this may include double walled tank designs. Tanks may also be built with or without multiple compartments for multiple fuel storage.