C:
6
Having this bacnground notice iat tusen lucg Lrissuc has a well
known carcinogenic potential under a number of situations, including
c..posure to jonizing radfaticns; and thot in the Hanrord dug scudy induction
oO
hrnt
bik o 6
These
to establish pluto niun induced Jung cancer es a
,
are a sufficien
ct
of lung cancer was observed after exposure to plutonium aerosols.
“Jegitimate concern for humans.
o™
The follc.ing is a review of the official guidance for estimating
the carcinogenic cffects fron exposure to radioactive particulates.
I.
"(210)
The NCRP has arbitrarily used 10% of the
volume of the organ es the significent volume for
irradiation of the gonads.
There are seme cases in
which choice of a significant volume or area 1s
virtually meaningless.
.
For exemple, if a sinal
particle of radioactive material Tixcd in either Tung
or lymoh node may be carcinocenic, tne averaging of
Gose cither over the juna, of ene cubic centinzier
may have littie to Go with the case. Use oF sicnificent
Volonre oF ere. 5 “ust be inched c7 es ome of the round
off devices waich in special cases must give way to
detailed stucy.”
°
NCRP Report #39
Basic Radiation Protection Criteria
January 15, 1971.
(emphasis added)
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