ro
ee ae
-
t
nent -
Criteria
°
Table Ia summarizes the radiological criteria to be used in evalvating the feasibility of evacuition.
RADICLOGICAL CRITERIA FOR EVALUATING FEASIBILITY CPF EVACUATION
Effective Biological Dose*
Calculated To Be Delivered
Minimum Effective Biological Dose
That Must Be Saved By Act Of
Lowine Pellet
Will Not. Pe Indicated)
Up to 30 roentgens
{No evacuation indicated)
30 to 50 roentgens
15 roentgens
In A One-Year Feriod Fol-
Evacuation (Otherwise Evacuation
50 roenitgens and higher
(Evacuction indicated without
regard to quantity of dose that
might be saved)
eC
*The "effective biological dose" is an estimate of a biolosicel
"damage" dose, taking into account the lin th ef time for delivery
of a given dose, and ths recuction ef esse due to (a) shielding
a
wees ee
afforded by buildines and (b) the process of weathering.
The rationale for teble Ja is as follows:
The total effective tie
ological dose that would be received if evacusiion were not ordered is
obviously a determinins factor,
Another consiceration is the fact t!.at
such en action as evacuation could be dangerous to the individuals end
could also possibly be cetrimental to a very necessary nations) effort
of weapons development.
One mst then ask, "Just how much will be gained
(radiation dose saved) by evacuation?"
are indicated in table Ia.
Estimates of these two variables
Thus, a populace may receive up to a calcu-
lated 30 roentgen effective biological dose in one year without indicat~ing evacuation; from 30 to 50 roentgens, evacuation would be considered
4 ote
TARLETe