It means an inner tank sits within an outer containment layer intended to hold escaping oil if the inner container fails.
Double-Wall Heating-Oil Storage for Spill Containment
A bunded oil tank has an inner fuel container and an outer containment layer. MacBlair lists Platinum and Titan EcoSafe models in slimline, horizontal and vertical shapes, with capacities shown from 650 to 5,000 litres. The layout matters as much as volume when a tank has to fit beside a building or within a restricted yard.
Check width, depth, height and the route for delivery and installation. Some listed tanks have top outlets, others bottom outlets, so the existing supply arrangement cannot simply be assumed to match. The base and fill point must remain accessible for inspection and deliveries. The wider plumbing and heating range includes the connected heating system.
Secondary containment helps limit the consequences of a leak, but it does not replace correct siting, fire separation or maintenance. Have an OFTEC-registered technician assess the location and the requirements that apply. The supply route to oil boilers may also call for specified remote fire valves.
Bunded Oil Tank FAQ's
Compare the measured site footprint, height restriction, required capacity and installer access. A slimline model may fit a narrow space, but dimensions vary.
It needs a stable, level base specified for its size and load. An installer should check base and siting requirements for the exact model.
The fuel leaves the tank from a different connection position. The installer must match the outlet to the approved supply design and tank model.
Possibly, but fire separation, openings, boundaries and access must be checked against current guidance by a competent technician.