-~ 42 man was performed by the NAS-MRC Advisory Committee on the
Biological Effects of Radiation.
,
is referred to us
1972,
A.
Their report,
the BLIR Report.
published in
73
Occupational Exposure
The existing occupational exposure standard for uniform
whole body irradiation is
5 rem/yr and for the lung,
the BEIR Report estimates that exposure of
15 rem/yr.
the whole body
of an individual «to 5 rem/yr would lead to a cancer risk
between 4.5x107° and 2.3x1073/yr.
10
-3
/yr.
75
Their best estimate is
Their estimate of the risk of cancer to the
individual from a lung exposure of the 15 rem/yr is
3xl07>/yr. 7°
Allowing a risk of cancer induction between 1/1000 and
1/1C,000 per particle, Table V presents the maximim permissible
lung particic burdens
(MPLPB)
that result in risks comparable
to these uniform radiation standards for occupational exposure.
The MPLPB values in Table V represent a very substantial
reduction in the MPLB.
A hot particle of Pu-239 at the lower
limit activity contains only 0.07 pCi while the MPLB for
‘occupational exposure. is
1.6x10%
pGi.
Thus
the
73/ NAS-NRC, "The Effects on Populations of Exposure to
Low Levels of Ionizing Radiation," (BEIR Report), NAS-NRC,
Washington, D. C. , Nov. 1972.
74/
Ibid, p. 91.
75/
Ibid, p. 91.
76/
Ibid, p. 156.
.
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