Can a domestic oil storage tank be installed internally?
Yes, British Standard 5410: Part 1: 1997 does permit a domestic oil storage tank up to 3500 litres capacity to be installed within a building so long as the tank is provided with secondary containment, such as an integrally bunded oil storage tank, contained within a 60 minute fire resistant chamber and is located at the lowest possible level. The chamber should contain nothing but the tank and be ventilated to outside.