R-006-93

2. These regulations apply
(a) to all boilers, pressure vessels and plants to which the Act applies;
(b) to all pressure piping, fittings or other equipment attached to or used in connection with boilers or pressure vessels to which the Act applies;
(c) to all operating engineers, operators and welding operators to whom the Act applies; and
(d) to all work performed on boilers, pressure vessels, plants and equipment referred to in paragraphs (a) and (b).