180 NAC 9-011. VENTILATION SYSTEMS

011. VENTILATION SYSTEMS. Ventilation systems must control airborne radioactive material. 011.01 AIRBORNE RADIOACTIVE MATERIAL. Ventilation systems must be provided to ensure that personnel entering any area where airborne radioactivity may be produced will not be exposed to airborne radioactive material in excess of the limits specified in 180 NAC 4, Appendix 4-B, Table l. 011.02 RELEASES. A registrant, as required by 180 NAC 4-014, must not vent, release or otherwise discharge airborne radioactive material to an unrestricted area which exceed the limits specified in 180 NAC 4, Appendix 4-B, Table II, except as authorized in 180 NAC 4-014 or 040. For purposes of 180 NAC 9-011, concentrations may be averaged over a period of not greater than one year. Every reasonable effort should be made to maintain releases of radioactive material to unrestricted areas as far below these limits as is reasonably achievable.