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.