ConVault protected aboveground storage tanks (AST’s) for gasoline, diesel and other petroleum products are available in sizes ranging from 125 to 12,000 gallon. The primary tank can be mild steel, stainless steel, coated steel or in some sizes polyethylene. Primary and built-in secondary containment are protected in a six inch thick monolithic concrete shell. ConVault AST's are shop-fabricated, tested and listed in accordance with UL 2085 and ULC 142.16 standards for Fire Resistant and Protected Type Secondary Containment for Aboveground Storage Tanks for Flammable and Combustible liquids. They are fire resistant, vehicle impact resistant and bullet-proof. Manufacturing sites are located throughout North America, with additional manufacturing sites in Europe, Japan and Australia. Over 30,000 ConVault AST's have been manufactured since 1986 and are installed at extremely diverse locations around the world.