3. An activity shall not be taken to be an activity falling within sections 1.1 to 7 of Part 1 if it is—
(a)carried out in a working museum to demonstrate an industrial activity of historic interest or if it is carried out for educational purposes in a school as defined by Article 2(1) of the Education and Libraries (Northern Ireland) Order 1986(1);
(b)carried out at an installation or mobile plant solely used for research, development and testing of new products and processes;
(c)the running on or within an aircraft, hovercraft, mechanically propelled road vehicle, railway locomotive or ship or other vessel of an engine which propels or provides electricity for it;
(d)the running of an engine in order to test it before it is installed or in the course of its development; or
(e)carried out as a domestic activity in connection with a private dwelling.