2. In this Act:(1) the word “Minister” designates the Minister of Labour;
(2) the word “contractor” designates a person who, for another, carries out, or causes to be carried out, installation, renovation, alteration or repair work on piping systems included in the following:(a) heating systems used for producing motive power or heat in any form whatsoever, in any building or construction; such systems including among others gravity or forced hot water systems, and high, low or vacuum steam systems and likewise any firing system;
(b) refrigerating systems of any warehouse, building or premises, used for cooling the air, chilling articles or for making ice, having a capacity to be fixed by the Régie du bâtiment;
(c) mechanical sprayers utilized to prevent and fight fires in any building or construction;
(d) plumbing systems, in any building or construction, including piping and all accessories used for drainage or draining, for the back air vent, for supplying hot or cold water or gas;
(3) the word “journeyman” means any person who has completed his apprenticeship, holds a certificate of qualification issued under the Act respecting manpower vocational training and qualification (chapter F-5) or a journeyman competency certificate issued under the Act respecting labour relations, vocational training and manpower management in the construction industry (chapter R-20) and who, as such, carries out for a contractor the work of installing, altering or repairing of one, several or all of the systems of piping contemplated in subparagraphs a, b, c and d of paragraph 2 of this section;
(4) the word “Régie” designates the Régie du bâtiment du Québec, established by section 87 of the Building Act (chapter B-1.1);
(5) the word “regulations” designates the regulations adopted in virtue of this Act.