‘
~ 46 ~
be considered as acceptable limits, or whether design basis
are
“of
Ft;
accidents that are currently evaluated under these criteria
exceedincly low probability of occurrence," we
recommenc that 19 CFR 100.11(a) (1) be modified as follows in
order to establish a hot particle stancard that is equivalent
to the risk associated with 25 rem whole body irradiation:
{1)
An exclusion area of such size that an
incividual located az any point cn its boundary
for two hours immediately following onset of the
postulated fission croduct or othar radionuclide
reigase woulc not receive a total radiation dose
tm excess of
25
rem*
or a total
raciazi
ss of 300 rem’ to the
sayrois irom iocine
exocsure, or receive a lunc
Darzticla burien in excess of 19 aot sarticles.3
~2
33 Act particle is a particle tnat contains
Suliicient ectivity to deliver at leas: 1000 ren/yr
to the surrounding lung tissue.
Tor isotovces
nNaving nali-lives creater than cne vear, this would
correstons to varticles containing at least 0.07
pCi si alisha activity.
&lsc racommend that similar criteria be established
limiting nor variicle releasas
now coverei under
10
CFP
th
we
or nuclear
facilities not
1994.
2s devositec on land suriaces can ba
nis cna air Sy anv number of means,
including
Followins
on
rl2 traffic, nauman or imical movements,
ee em ne
+ on
were vate
oe
aro,
wera.
Co
etemarrpee rt pe
.
sae”
cee anat