C. Dose - Effect Relationship
Civil defense operations will always be ca ried out under
tne philosophy of the letct possible radiation ex osure consistent
with the mission.
The greatest possible protecti
will be the
goal of all facilities and procedures for the pub ic,
For
orientation and quick reference the following sta
ments will be
paraphrased from "Health and Special Weapons Defe
e", A.C. ll-l
cublished by FCDA in 1950 and from “Emergency Exp
ures to Nuclear
Radiation”, T.B, 11-1, published by FCDA in 1952.
Less than 25
roentgens of whole body exposure to gamma rays ov
of time will not result in obvious injury.
Doses
will produce nausea and vomiting in some individ
seriously affect the working efficiency of a grou
would probably prove fatal to some 50% of people
or more would probably be fatal.
Somewhat larger
a brief space
f about 100r
s but will not
About hoor
600r
exposed.
Hoses are
required to produce a given effect if the radiatic n is received
over several days or in intermittent exposures.
D. Probability of Extensive Radiological Cc ntamina tion
Radiological contamination, although in no
ense exclusive
to high-yield thermonuclear detonations, does bec
e a@ matter of
major concern when @ large weapon of the type use
in the 1954
Pacific tests is exploded near the ground.
lout of
The f
radioactive materials from such an explosion may,
under certain
circumstances, settle over wide areas far removed
from the point
of detonation,
E. Distances and Areas
The areas seriously affected by heat and b
st of a
thermonuclear weapon are large, but are small indekd compared to the
area of residual radiation hazard produced by fal
ut.
Because of
the many uncertainties, especially wird direction
nd speed at
DOE ARCHIVES