Nothing in this article shall be construed to affect, prevent or in any manner expand or limit the authority of any person otherwise authorized by law or regulation to practice any function of a medical physicist, or any department or agencyauthorized by law or regulation to regulate the use of radiation,nor prohibit the repair or calibration of any test equipment used by professional medical physicists by any person otherwise allowed to do so under state or federal law, nor serve to limit radiologic and/or imaging technicians or any individual otherwise authorized by law or regulation from performing quality control measurements or obtaining quality control data, nor serve to limit a service engineer in the repair of radiation producing equipment nor an installation engineer in the installation of radiation producing equipment.