In-ground tank

for liquidsfor firefightingcarbon steel

Horizontal cylindrical single and double-walled tanks for underground storage of flammable and non-flammable liquids. Made by using shell plates and dished ends made in carbon steel type S235JR complying with UNI EN 10025. The external shell is welded by submerged arc welding procedure while the internal part is MIG-welded. Parts are designed in compliance with rules and regulations in force. Single-walled tanks form an impermeable containment; they act as the inner tank of double-walled tanks. Double-walled tanks; for these tanks, a secondary wall is welded around the inner tank, which forms an impermeable self-contained tank. These tanks are provided with two sockets for the leak detection system in order to permanently monitor the integrity of the tank. All tanks are hydraulically tested. Tests are pressure tests and are performed to check the inner tank and the interstitial space between the inner and the outer tanks as well. Fields of application: Single-walled tanks are mainly used for: • - Fire-fighting systems. • - Irrigation systems. • - Collection and storage of rain water. • - Drinking water storage. • - Collection and storage of waste and effluent water. • - Storage of all kinds of liquids. Double-walled tanks are generally used for: • - Service stations. • - Private fuel stations. • - Storage of flammable liquids for heating systems. • - Feeding generators. • - Storage of aircraft and ship fuels. • - Storage of chemicals and water-polluting liquids. • - Collection and storage of lubricants and drain oils. • - Collection and storage of waste and effluent water.