Definitions:
Qualified person: one who is familiar with the construction and operation of the equipment and the hazards involved. A person is likely to be considered "qualified" with regard to certain equipment in the workplace, but "unqualified" as to other equipment. A person who is undergoing on-the-job training and who, in the course of such training, has demonstrated an ability to perform duties safely at his or her level of training and who is under the direct supervision of a qualified person is considered to be a qualified person for those duties.