~ 44 = Z emitting radionuclides in the deep respiratory zone is 2 particles. This corresponds to a MPLB of 0.14 pCi and repre- sents a reduction of 115,000 in the existing MPLB. implies that the DF for hot particles is 115,000. it requires a reduction of the MPCa for Pu-239 by This Moreover, 115,000 to a value of 3.5x1l0716 uci/ml unless it is determined that the plutonium is not in hot particles. B. Exvosure of the Ganeral Public As indicated in Table II, the MPL3 for non-occupetional exposure (members of the oublic) for occucational :imesure. particle is tenfold less than that Such an excosure limit for a hot would be 9.2 voariicles. Exoosure at this level In fact, since an ommendations Q Is (D Fr i @ wo (v ct + § wu te ib oO er Y Oo 3 fh wi a Q 0 disorosertionate fraction of the risk. and admcnitions