18.—(1) A petroleum enforcement authority is the enforcing authority within its area for—
(a)these Regulations;
(b)sections 2 to 4 and 7 and 8 of the 1974 Act for the purposes of regulation 21(1), even if the road tanker in question is on a road at the time of that filling or replenishing; and
(c)the Dangerous Substances and Explosive Atmospheres Regulations 2002 in so far as they apply to any activity—
(i)at a retail petrol filling station relating to fuelling motor vehicles, ships with vehicle fuel or aircraft with petrol; or
(ii)at a non-retail petrol filling station relating to fuelling motor vehicles, ships or aircraft with petrol.
(2) Paragraph (1)(c) does not apply to—
(a)any activity at a retail petrol filling station connected with—
(i)repairing motor vehicles, ships or aircraft; or
(ii)retailing goods other than vehicle fuel; or
(b)any activity at a non-retail petrol filling station connected with repairing motor vehicles, ships or aircraft.
(3) In this regulation—
“non-retail petrol filling station” means premises used, or intended for use, for dispensing petrol for use in motor vehicles, ships or aircraft and includes any petrol dispenser, other apparatus or storage tank for storing petrol used there in connection with that fuelling, but it does not include any retail petrol filling station;
“retail petrol filling station” means premises used, or intended for use, for dispensing petrol to the public for use in motor vehicles, ships or aircraft by way of sale and includes any vehicle fuel dispenser, other apparatus or storage tank for storing vehicle fuel used there in connection with that fuelling;
“ship” includes every description of vessel used in navigation propelled by means of an internal combustion engine and includes hovercraft;
“vehicle fuel” means petrol or any other substance which provides the power in an internal-combustion engine in a motor vehicle, ship or aircraft;
“vehicle fuel dispenser” means a mechanical or electrical device for the dispensing of vehicle fuel.