TABLE II Existing Exvosure Guidelines for Non-Occupational Exposure that Apsly to Pu-239 in Insoluble Form* Individual MPLD 1.5 (ICRP, NCRP, (0.5) rem/yr SPC 10722 (3x10-13) uci/mt = (ICRP, AEC) (0.17) ren/yr : 0.0016 r} a 0 0.5 FRC) MPL3B * Population Averace (0.0005) uCi 0.0005 (0.90017) uCi 310723 (10713) uci/ml MPLD values in parentheses refer to the latest reconmendations cZ the NCRP,. The MPLB and MPCa values in parentheses corresoond to the new NCRP dose recommendations. tv, Caloulatins tne Dose Due to Insoluble Aloha-finmitters Tne ourpose of this section is to examine the assumotions in the radiation standards above that are inappropriate when apclied to insoluble alpha-emitting particulates such as aerosols of puG3. The assumptions are introduced through a tiew of basic definitions of radiation dose and the factors gas to calculate the dose. The Dose Equivalent when an X-ray or the radiation emitted by a radionuclide through tissue it transfers anergy to the cells in q * 3248