*=
CJTF SEVEN No
entra
ey
Hazards Sesultins
3:3
poo Acomic Bomb Explosions
situsticn maps, the costing of areas of hazard and minimizing tre
scread of contaminated material into uncontaminated areas constitute
the active measures for reducing the radiological hazard.
c. Personnel within an operational radius of ground sero who are to
be facing in the direction of the flash will be required to wear special gcagles to protect their eyes against exccrsive light. Persennel within the above operational radius who are not provided goggles
will face, with eyes closed. in the opprsite direction from the
fiasx. After cen (10) sesonds, such personnel may turn around and
ctoerve the phencumena.
3e
AvL. paved Hazard Arcas
.
a.
Immediately under the bomb burst there will be an area of intense
ratisactivity extending downwind and, to some extent, crosswind and
upei:d with gradually decreasing intensity.
ob. Extending doamwind, and to some extent, cresswird and upwind) an
airborne radica-tive hazard will exist. Its characterustics will de~
pend on the seter-logical influences such as wind speed ani direction
at various altitudes up to the maximun height rsacned by the cloud.
¢. Contaminat’? water in the lagoon adjacent to ce shot site may
be of consequence and will be analyzed by the radiciogical safety
unit of 7 7 2 anmedaately after shot time and a other intervals,
a, Uniees care is exercised, individuals or objects entering contaminated jreas say transfer racioactivity to clieam areas,
e.
By means of instrutents such as Geiger-Mueller ccunters and ion
chambers it is possible to detect the area of contamination and to
measure the intensity of the radicactiv.ty. Radiation intensity
wii. normaity be measured and reported sn roentgens fer hour. Besides those instruments
dos:zeters and f11m baizes will be used as
indicators of the accumulated expomire to radioactrvity.
Oniy per-
senne. invoived an work near, or in, radssactive areas will wear
{ila badges vo provide a permanent record of exposure, except that
film badges will be issued to ten (10) percent of ship crews to aid
aa estimating crew dosage in the evert cf heavy feli-out.
£. The antenaity of the radioactive hazard tends to decrease with
time due to decay of radicactive materials and d:srersion and dilution, deserding upon climatic condations. As an e>rproximation, the
intensity cf the surface contamination from the fassicn products
decreases by radicactive decay inversely with the time after the dee
tonation.
As a further approximation, the intensity of water con-
tamination decreases by radioactive decay and diffusion inversely
th the square of the time after the detonation.
4.
This appendix has been designed for reduced secursty classification
in order to psrmit wide dissemination to all persomnel of the command and may be downgraded to RESTRICTED - SECURITE INFCRMATICN provided all-references to Joint Task Force SEVEN ard its subordinate
umits are deleted.
‘Sy
CONARY
AA.
Colonel, US. Airforce,
Assistant Chief of Staff, J+
P, W. CLARKSON _
Major General, U.S. Army
Commarde>
\\V