B.
"l.
The external dose to non-participating inhabitants, of radiation .
from gamma rays, shall not exceed the accepted international permissible dose
level of 300 nxfils, which may be Gntegrated) over & maximum of 10 weeks.
"2,
Ata point of human habitation, the activity of radioactive
particles in the atmosphere, averaged over a period of 24 hours, shall be
limited to 100 microcuries per cubic meter of air (corresponding approxi-
mately to a ground level gamma intensity of 30 mr/hr).
"3,
The 2h-hour average radioactivity per cubic meter of air, due to
suspended particles having diameters in the range 0 micron to 5.0 microns,
shall not exceed if100 of the above; nor is it desirable that any individual
particle in this size range have an activity greater than 10-2 microcuries
calculated 4 hours after the blast.”
Meeting Jangle Feasibility Committee, Washington, D. C., July 13,
and 22, i951).
C.
“this Division acthorizes a permissible exposure of 3.9 r of gamma
radiation Tor Buster-Jans"e test personnel, without regard to the rate at
which the cose is accurvieted, providing this exposure represents the total
integrsted gamma dcs= over any period of 13 consecutive weeks which includes
the test tsriod.
Specifically, this permissible dose of 3.9 r is not an extra
2 mel
+.
-—
=
*
.
Jer,
17
+
M
_
~
mo might
Ctharwise
raceive
redietion
during
the Ij-veerh
.
-
Srorandum from Dr. Shilds Warren to Carroll Tyler, Meneger SECO,
FY
ws
5
t
j
,
3
Setober LL, 1951.