The MPLPB=0.2 particles implies that the existing MPCa for non-occupational exposure to Pu-239 should also be reduced by a factor cf 115,000 to a value of 9xio713 uCi/ml unless it is determined that the plutonium is not in hot particles. Cc, Exposure from Accidental Releases There are no direct statements by standard-setting organizations regarding an "acceptable" exposure associated with release of radioactivity in an accident. 81 For purposes of evaluating sites for nuclear reactors, establishing site boundaries, and preparing safety analysis reports, however, the AEC has adopted specific criteria. boundary The reactor site (surrounding the exclusion area) must meet the following criteria (10 CFR 100.11{a)(1)): (1) An exclusion area of such size that an individual located at any point on its boundary for two hours immediately following onset of the _“ postulated fission product release would not receive a total radiation dose to the whole body in excess of 25 rem? or a total radiation dose in excess of 300 rem@ to the thyroid from iodine expesure. 81/ Fish, B.R., G.W. Keilhalte, W.S. Snyder, and S.D. Swisher, Chapter 7 of early draft version of B.R. Fish, et al, "Calculation of Doses Due to Accidental Released Plutonium from an LMFBR," ORNL-NSIC-74 (Nov. 1972), p. 128. This chapter was deleted from the final version at the direction of AEC-Division of Reactor Development and Technology because it was judged to be not directly applicable to the objective of the study, and the information base from which it was developed was already available in other documents. AEC-DRDT further stated that it was not removed because of the quality of the work.