180 NAC 4-007. DETERMINATION OF EXTERNAL DOSE FROM AIRBORNE RADIOACTIVE MATERIAL

007. DETERMINATION OF EXTERNAL DOSE FROM AIRBORNE RADIOACTIVE MATERIAL. Licensees must determine dose from airborne radioactive material as follows. 007.01 DEEP DOSE EQUIVALENT, LENS DOSE EQUIVALENT AND SHALLOW DOSE EQUIVALENT. Licensees must, when determining the dose from airborne radioactive material, include the contribution to the deep dose equivalent, lens dose equivalent, and shallow dose equivalent from external exposure to the radioactive cloud. See Appendix 4-B of 180 NAC 4. 007.02 RADIONUCLIDES OTHER THAN NOBLE GASES OR NONUNIFORM DISTRIBUTION. Airborne radioactivity measurements and derived air concentration (DAC) values must not be used as the primary means to assess the deep dose equivalent when the airborne radioactive material includes radionuclides other than noble gases or if the cloud of airborne radioactive material is not relatively uniform. The determination of the deep dose equivalent to an individual must be based upon measurements using instruments or individual monitoring devices.