I have a 1000ltr IBC here, which i use for long term settling of liquid oil for winter /summer use.
Ie i only ever load it with filtered liquid oil, and use the top layers for winter fuel, so as to avoid having to use winterisers etc.
I was under the impression that as i was 'domestic' and the tank was <3500ltrs, this was compliant, but *if* its being classed as "storing waste oil" then its not compliant, as (it seems) any size container used to store 'waste' must have secondary containment (i think even a 20 ltr tin!?)
However, strangely enough, the processor itself does not require bunding.
Given that there is no limit on the quantity of oil that can be physically (rather than chemically) processed, is my 1000ltr IBC compliant or not, given my specific use of it (which is its actual use - its not just me trying to exploit a loop hole!)