Apparatus means electrical apparatus and includes all machines, fittings, accessories and appliances in which conductors are used;
Control apparatus means any device which prevents or controls the emission of any air contaminant directly or indirectly into the outdoor atmosphere.
alternative apparatus means alternative apparatus adequate to enable the utility undertaker in question to fulfil its statutory functions in a manner not less efficient than previously;
Self-contained breathing apparatus or "SCBA" means an atmosphere-supplying respirator for which the breathing air source is designed to be carried by the user.
Electrostatic spray means a method of applying a spray coating in which opposite electric charges are applied to the substrate and the coating. The coating is attracted to the substrate by the electrostatic potential between them.