7.—(1) The requirements of paragraphs 1(2), 2, 6 or 7 of Schedule 1 shall not apply in relation to any process involving only the burning of waste oil in an appliance with a net rated thermal input of less than 0.4 megawatts.
(2) In this regulation—
“net rated thermal input” has the same meaning as in regulation 3(4); and
“waste oil” means any mineral based lubricating or industrial oil which has become unfit for the use for which it was intended and, in particular, used combustion engine oil, gearbox oil, mineral lubricating oil, oil for turbines and hydraulic oil.