Section R. 333.5390 - ShieldingRule 390.
(1) The degree of protection required shall be determined by the workload, use and occupancy factors, and the tube potential, tube current, mechanical movement, and distance. The design shall be subject to approval by the department.(2) In a radiographic room, wall and floor areas exposed to the useful beam plus an area extending at least 30 centimeters (1 foot) beyond shall be provided with a primary protective barrier where necessary as determined by workload, use and occupancy factors, and distance. All vertical primary protective barriers specified in this rule shall extend continuously from the floor to a minimum height of 2.1 meters (7 feet).(3) Secondary protective barriers shall be provided in the radiographic room ceiling and in those walls not requiring primary barriers.(4) Control apparatus for the radiographic equipment shall be shielded by a nonremovable primary protective barrier extending to a minimum height of 2.1 meters (7 feet).(5) Exposure switch location and control shield shall be oriented such that, at arm's length from the exposure switch, the operator shall not be exposed to the useful beam, leakage radiation, or radiation that has been scattered only once.(6) The operator shall be able to see and communicate with the patient from a shielded position at the control panel. When an observation window is provided, it shall have a lead equivalence at least equal to that required of the control barrier and shall be installed such that the attenuation effectiveness of the barrier is not impaired.Mich. Admin. Code R. 333.5390
2016 MR 10, Eff. 5/25/2016