2.—(1) The Clean Air Act 1956(1) shall be amended as follows.
(2) In section 3(4) for “fifty-five thousand or more British thermal units per hour” substitute “16.12 kilowatts or more”.
(3) In section 6(1) (b) for “one ton” substitute “1.02 tonnes”.
(4) In section 7(1) (b) for “100 pounds” substitute “45.4 kilograms”.
(5) In section 7(1) (c) for “1¼ million or more British thermal units an hour” substitute “366.4 kilowatts or more”.
(1)