EE = 0.75 R(1) ss (a70-2 ~ 16979-)
0.2
;
¢ 16800.1 469-03 _ 336703)
0.3
0.1
0.2
Dunning (0u56, AEC57) also developed the concept of the one-year
effective biological exposure (EBE).
(Both estimated exposure and
effective biological exposure were referred to as “doses,” but were
calculated in units of R.
“exposure.")
For consistency, we will refer to both as
This was done in order to account for the concept of
biological repair and was intended only for application where acute
somatic effects were of concern.
The defining differential equation
for EBE is
(ERE) = SeR(t) - X(EBE)
©
(10)
where R(t) is given by Eq. [7] and is a repair constant equal to
2n2/672 hr.
There is no easy solution of Eq. 10, but a graphical
solution has been provided (AEC57).
A comparison of the three calculational models is shown in Table }
for several different times of arrival of fallout.
For most arrival
times of interest, the EE is shown to be roughly half of the IE.
For its estimates of exposure, the TMCEFD used the calculational
model of estimated exposure for the BUSTER-JANGLE (1951), TUMBLERSNAPPER (1952), UPSHOT-KNOTHOLE. (1953), and TEAPOT (1955) series.
208
The