What is a bund?

A bund, in fuel and oil storage and dispensing, is a secondary containment unit installed around a vessel or area in which hazardous or dangerous liquids are held – in this case, oil, diesel, kerosene, or AdBlue – to name a few. Bunds may arrive custom moulded as part of a modern plastic bunded tank, or may be constructed of steel, or concrete.

Bunded tanks operate on a tank within a tank basis, with the outward shell being able to hold at least 110% of the inner tank’s maximum capacity, ensuring that all escaped fuel is contained in the event of leakage or breakage.