CALCULATION OF AVG. Sr89 amp s r7O ap pose
IN OFF~SITE COMMUNITIES DURING PHASE I, HARDTACK
Avg. air concentration for two months
1 x 1074 uc/e Total Beta
1x 10719 ye/ar
Old woRP Mec sr®9 in air 2 x 1079 uc/ml (occ. 12 hr. day)
axi1o78
«
(occ, 2) hr. day)
1x10
*
(off-site pop, 24 hr. day)
a
sr59 « sr90|
ToraL BETA|
<
uc/ml
BETA
If
avg.
hetiv ty
is D+
If avg.
Activity
isD+2
If avg.
Activity
sr°9
ACTIVITY
o_{
sr59
gr89
(PRESENT) (MPC)
Actual/Pern.
Actual/Perm.
uc/ml
fuc/ml
%
6.8
1x10729
6.8 x 10712/1x10°9
90.7
0.35%
3
1x10
13x10 inion}
0.3
0.15%
9.0
is HE 12
1%
BOLLES &
Pus
USMEDL 456
Report
*
sr90
rE
basis.
—T
ax B*
CLD
HB 52
c/D
0.5%
MPC
B(1/180)(100/1)
ag fractionation, shortly after fission Sr°?/gr9° = 180 on an activity
) Therefore, the Sr?° present is less than # of 1% of the 89 and
can be igmered in calculating (C).
Including facters for new ICRP general population value (80/30) fer 8r90
still keeps the peak value areund 0,35 x (80/30) or 0.9% of the allowable.
8
90
The obvious conclusion of this calculation shows that airborne sr? and
was of little hazard in off-site commnities during the past series.
“Bot ts Suu Fissiepins oF yas APPUCABLE Ta Pustopw us