a
‘
¥.
~%
Fig. 6.4-3 and Fig. 6.h-l show some representative dose rate and
cunulative dose_values respectively.
Data on the cumulative dose rate has
not yet been reduced beyond that time shown since evaluation of washdown
ig most important during the period H+12 hours.
The reversal in relative magnitudes of dose rate fore and aft on
the two ships again seems to be present.
Possible differences in washdowm
effectiveness on different areas of the ships may be indicated.
Shielding Studies
Adequate data were obtained from this test but the calculations
and evaluation of results will be done at USNRDL because of lack of personnel
and time at the test site.
.
‘*
Radiological Survey and Photopraphy
~
A complete initial survey was performed on YAG 39.
Because of high
dose rates only 75% of the weather surface survey points were covered on
YAG LO, although the interior survey was complete.
Plied for both ship and aircraft decontamination.
Survey supvort was supSurveys included gamma
field, surface beta, directional gamma measurements, and wipe samples,
The camera station operated successfully but preliminary examination
of the film showed no evidence of gross fallout.
Ship Decontamination
No experimental decontamination was verformed.
Operational methods
of decontamination were used to bring the radiation levels on the ships down
*o values which will allow for a return to home port without subjecting the
Ships! personnel to excessive radiation dosage.
YAG 39 was decontaminated first and was then used as a base of
Operation for the decontamination of YAG 0.
The average level on YAG 39