Department of Energy (DOE) Radiological Control Manual

Chapter 2 - Radiological Standards

Appendix C - Non-Uniform Exposure of the Skin

Non-uniform exposures of the skin from x-rays, beta radiation and radioactive materials on the skin, including hot particles shall be assessed and recorded as specified in the table below:

      AREA OF        METHOD OF AVERAGING, ADDING TO OTHER DOSES
       SKIN          RECEIVED, AND RECORDING NON-UNIFORM SKIN DOSE
    IRRADIATED 


    > 100 cm2        Averaged over the 100 cm2 of skin receiving the
                     maximum dose

                     Added to any uniform dose equivalent also received
                     by the skin

                     Recorded as the annual extremity or skin (shallow)
                     dose equivalent (H)


    >= 10 cm2        Averaged over the 1 cm2 of skin receiving the
    and < 100        maximum dose (D), reduced by the fraction (f)
    cm2              which is the irradiated area in cm2 divided by 100
                     cm2 (i.e. H=fD)

                     Added to any uniform dose equivalent also received
                     by the skin

                     Recorded as the annual extremity or skin (shallow)
                     dose equivalent


    < 10 cm2         Averaged over the 1 cm2 of skin receiving the
                     maximum dose 

                     Not added to any other dose equivalent, extremity
                     or shallow dose equivalent (skin) recorded for the
                     annual dose equivalent

                     Recorded in a person's radiation dose record as a
                     special entry