‘In making the above comparison, we pelieve that
1
a
the upper limit of the radiation induced risk should be used.
cautioned that its estimate may be too
Tne BEIR Committee
high or too low.
too
low is
i/
One reason for suggesting that it is
thak th ce Linear
hypothesis is used as a basis for
extrapolating from high dose-high dose rate data to low
dose-low rate
Kecant evidence sugcests that
situations.
the linear hypothe
Sis may underestimate the effect of low
L
s
dos¢-low das2 rate
irradiation.
been summarized by Dr.
The
latest iniormation pas
Karl 2. Morgan who concluded:
Freauently in the literature it
is stated that tne linear hypothesis
2s avery c
vative assun soe
eine on.
During the
however
Many studi
probably i
that at low <4
somatic aamag
that from ¢«-i
usually greater than would b
on the linear hypothesis. 8/
Thus, there is little justification for relying cn
the
lower estimate of
the radiation induced risk and prudent
health practice would indicate that the upper limit should be
used.
7/
R/
to
When this is done,
Ibid.,
inspection of Table 2 indicatas that
».90.
Morgan, Harl 2.,
Suggested Peduction of Permissidle Exposure
Plutonium ant Other Transuranium Elements,
Industrial
“rlene,
Amyast,
LI75.
Journal of Anorican