In these regulations ¾
}abrasive blasting~ means cleaning or abrading the surface of an object using an abrasive material propelled by compressed air, water or steam or by a wheel;
}aquatic environment~ means any watery environment including marine, estuarine and riverine environments;
}blasting chamber~ means a fully enclosed structure in which abrasive blasting is carried on;
}dry abrasive blasting~ means abrasive blasting during which no water is added to the abrasive material or the propellent;
}operator~ means a person carrying on abrasive blasting;
}waste material~ means used abrasive, abraded material, waste generated by cleaning an object prior to blasting, and any other waste products created during abrasive blasting, including waste collected in a dust extractor, settling pond or tank, or holding sump;
}wet abrasive blasting~ means abrasive blasting during which water is added to the abrasive material or its propellent or is used as the propellent;
}wet scrubber~ means a device in which water or other liquid is used to remove particulate matter from a gas stream.
(2) In these regulations a reference to abrasive blasting being carried on }in the open~ is a reference to abrasive blasting being carried on other than in a blasting chamber.