reg 74 Testing of regulated measuring instruments
(1) Where an inspector considers that a test of a regulated measuring instrument is necessary, otherwise than for the purposes of regulation 73, the inspector may require the controller of the instrument to provide to the inspector such equipment, test liquid, materials, qualified personnel or other assistance as the inspector may reasonably require. (2) Every regulated measuring instrument submitted for testing by its controller must be in a clean condition. (3) Paragraphs (4) to (9) of this regulation only apply to regulated measuring instruments that are non-water liquid measuring systems. (4) No regulated measuring instrument shall be tested until it is installed ready for use and complete with all its parts. (5) A regulated measuring instrument must be tested by an inspector under practical working conditions with a test liquid which must be— (a) the liquid fuel that the instrument is intended to deliver; or (b) a liquid having properties which replicate in all respects relevant to testing those of the liquid fuel that the instrument is intended to deliver. (6) An inspector may open a locked or sealed tank or container for the purpose of testing a regulated measuring instrument or returning any liquid withdrawn during testing. (7) Any liquid withdrawn during testing must be— (a) returned to the tank or container from which it was withdrawn if the inspector is of the opinion that it is reasonable and practicable to do so and the controller agrees; or (b) placed in another suitable receptacle reasonably convenient for the purpose that is provided by the controller. (8) An inspector, if requested to do so by the controller, must give to the controller a signed and dated statement of the quantity of liquid withdrawn during testing. (9) An inspector must— (a) securely re-fasten any tank or container opened under paragraph (6) immediately after the conclusion of any test or after returning any liquid withdrawn during testing; and (b) replace any sealing device broken by the inspector. (10) In this regulation references to the “ controller ” of a regulated measuring instrument are to the person who has control of the instrument or whom the inspector has reasonable cause to believe has control of the instrument.