Tiseussio: of t.e Rlolocfeal Factor:
1: the deliver of a rive: radiation
expectad,
As lower perlocds of time are involved
dosc, lesser Liolosical effects mm, te
From the time of fallout util the time of evacuation orvbably
will 'e a matier of hours wiie
uas bec:. gonaidered essentisil. a: insta stan
eous dose, 1.¢., tc liological dose factor ie 1/1.
Prom the time svacumtion
could ‘e accomplis:ecd to time ef retur:. probabil: would be a miter of da:s,
minliaie
fo the ‘iological factor as been estizmated at J/m
until one vear later is essential
fiector sas tee. estimitad at SIT.
From 15 dacs after fallout
a durativ.. of one year, so t.s biological
It wil Le rwted v ere is wo calculation
aver ose year, recacse it is expected uncer asectual evndi tions of radioloricel
aod weat-erin: that pro abl. oo eirpnifica.t dose will be delivered after a
ears time.
It is recoriizec t at te precise quantities mi ested for t e¢ } iolo-deal factor es ot “e grcorted &) eu.clusive evicenos.
expect tat te deliver
It 4s reasonalle to
of gs rive: pacdiatio: dose over a period of many days
willoiave levy tinlovtcal effectiveness t a; an instactanseous one (ne: lector
DOE/NV.,
genetic effects) ad tat H.e extenslo. of te period to esve tially ov year
8 old dele a still lower *-ivlorical factor,
is t.e work
One nleee of supportive evidence
of “tranievist™ where ‘-ray doses to the skin rere fractionated
3 equal cats arovata, and tie Liolorical effects compared to a one treat-
bent dose.
A
and plot of total dozes versus days after initial treatment
sielded strai.” t lines,
For exmaple, the curve for sxin necrosis ‘dicated a
ratio of 3000/6700 reentrens for a one treatment versus 15 dail, equally
vheverts elf kW, "The Tolerance roe and the Prevention of Injuries Caused
- loniging Fadiations®. F030 Jee es te Sadie oe
Vol.
why! Dex236Aur.
Wh?
.
-_ UNCLASSIFIED
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