Section 120.705 - Limitations(A) No registrant shall permit any individual to act as an operator of a particle accelerator until such individual: (1) Has been instructed in radiation safety and shall have demonstrated an understanding thereof;(2) Has received copies of and instruction in 105 CMR 120.700 and the applicable requirements of 105 CMR 120.200 and 120.750, pertinent registration conditions and the registrant's operating and emergency procedures, and shall have demonstrated understanding thereof; and,(3) Has demonstrated competence to use the particle accelerator, related equipment, and survey instruments which will be employed.(B) The radiation safety committee or the radiation safety officer shall have the authority to terminate the operations at a particle accelerator facility if such action is deemed necessary to minimize danger to public health and safety or property.