Project 2.71 - Relative Importance of the Various Radiation Sources to
the Ship Shielding Problem - H. R, Rinnert
QBJECTIVES
To determine the relative radiation dose rates contributed by contamination of the eir envelope, water envelope, and the ship's weather surfaces,
To determine the time dependent gamma ray combined ebsorption and
scattering coefficients of still to be used in future calculations of
shielding effectiveness.
To field test new and improved detector systems.
To obtain gamma radiation measurements at various points on end in
the ship as a function of time for the following purposes:
Check points for future shielding calculations
Determination of the radiological situation at various locations aboard ship for Projects 2.63 and 2,10, to be used for operational
control of the test ships.
GENERAL
Both YAGs received levels of contamination adequate for the satisfaction of project objectives,
Preliminary indications ere that the rains encountered by the YAGs
on D + 1] will not prejudice the satisfaction of objectives.
The instrumentation performed satisfactorily.
RESULTS
Relative Camma Radiation Fields Contributed by Various Radistion Sources
Fig. 2.71-1 and 2.71-2 show the percent air contribution to the
gamma radietion field on the deck of YAG 39,
COPE
LAN: RG
- 28 -
ae.
As in previous events, the
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