TABLE I Existing Occupational Exposure Guidelines that Apply to Pu-239 in Insoluble Form* MPLD (ICRP, NCRP, FRC) 15 MPLB 0.016 uCi MPCa *Note: rem/yr (ICRP, AEC) 4x10741 uci/ml See Glossary for definitions of symbols. The exsosure guidelines for Pu-239 that apply to nonoccupatic-al excosure of the general public are tabulated in Table II. Two guidelines are applied here. One is for the limitinc expesure to an individual and tre other is for the average 2“po0sure of a population sample. differ by a factor of 3. These two guidelines The ICRP recommendations include only the auigelines for individuals. The MPLD values within the parentheses in Tadle II correspond to the latest recommendation of the NCRP nave not, 16 at . These latest recommendations of the NCRP this time, been incorporated AEC or EPA reculations. 165/ oe aw WNCRP Resort No. 39, On. cit., p. 95. into either the