PART TwOr RADIOLOGICAL SFETY PROBLEMS
1.
Originally, Operation CASTLE involved four events in the very high
yield range.
as plans progressed, the schedule was increased to seven events,
and thon reduced during the operation to six,
«sg a consequence, the iadsafe
Plan for the operation required detailed re-evaluation to determine the
practicality of various assumptions and planning factors.
Primarily, since
each extra event (insofar as personnel ratiation dcsages were concerned) was
additive, the permissible exposure per event for shot participants decrcased
as the number of events increased,
Prior to Operntion CASTLE, the maxioum
number of events at the Pacifie Proving Ground (PPG) was four on Operation
GREENHOUSE.
The maxisum number of high ylel< events was two on Opcratica
IVY, of wiich one was an air burst at 1,500 feet.
It appeared that C..STLE
planning would have to be budlt around the samc personnel <osage allowance
as usod on these cperations regarilcss of tho number and yields of the events
for C..STLE.
There was an obvious need for ways and ocans to cut dcwn on
personnel exposures per sh_t or to raise the permissible <cse for sone
individucis,
&
In regard to efforts to cut down on personnel exposures, 4
number of factors were involved.
Not all personnel would participste in each
event; however, it appeared to be a logicel assumption that the average number
of events for participation would increase.
It was also assumec¢ thet the
total mmber of people involved in the operation would increase jue tc attecpt
to spread the permissible dosage over 3 sufficicnt number of participants ta
affect an over-all average dcse within acceptable limits,
It was also ciear
thet some form of indoctrination was necessary in order to effect completicn
of work in contaminated areas with the maximum efficiency in order ths: the
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