gh | TABLE I Existing Occupational Exposure Guidelines that Apply to Pu-239 in Insoluble Form* MPLD (ICRP, NCRP, FRC) MPLB MPCa_ *Note: 15 rem/yr 0.016 uci (ICRP, AEC) 4xi10711 uCci/ml- See Glossary for definitions of symbols. The expdsure guidelines for Pu-239 that apply to non- > occupational exposure of the general publicare tabulated in Table II. Two guidelines are applied here. One is for the limiting exposure to an individual and the other is for the average exposure of a population sample. differ by a factor of 3. These two guidelines The ICRP recommendations include only the guidelines For individuals. The MPLD values within the parentheses in Table II correspond to the latest recommendation of the Nerp2?, These latest recommendations of the NCRP have not, at this time, been incorporated into either the AEC or EPA regulations. 16/ NCRP Report No. 39, Op. cit., p. 95.