auay
air contribution during fellout was very significent.
In the washed
area, at time of meximum fallout the air contributed close to 100% of
the gamma dose rate end sbout &4% of the gemma dose observed on deck, and
at the time of cessation of fallout the air had contributed about 42%
of the gamma dose observed on deck,
Fig. 2.71-4 through ?.7]-7 show the gemma doses and dose rates
observed on the decks of the two YAGs,
Fig. 2.7'-£ shows the estimeted gemma dose and dose rate contributed
by the air to the deck of YAG 39,
Fig. 2.71-9 end 7,71-10 show the gamma dose rates at several interior
locations in YAG 39,
The variations in the cose retes in the firerosm
and recorder room may be due to contaminated sea water; however, lack of
time has prevented examination of water contributions at this tire.
Interaction of Gamma Radiation with Steel
Garme radiation fields inside steel cylinders of wrious thicknesses
were compared es a function of cylinder thickness and time.
lines were celculeted and drawn for plots on
semi-log paper.
Least souare
(See Fig.
2.71-11 end 2.71-12).
Combined ebsorption and multiple scat‘ering coefficients for steel
were calculated.
These coefficients are presented and compared with
results from other shots in oS.
appear to be duplicating the
The ee results
(Flathead) results.
Whether the rain
caused gPpti onation and thus accounts for the sudden flattening of the
yang
=
a Ae
(Tewa) curve remains to be determined,
ow
CONCLUSION
Participation in this shot supplied data believed to be adequate
for the satisfaction of 411 project objectives.
COPIED GUE
UNL eC
)