4.2 Internal Dose - Lawrence Livermore Nationa] Laboratory
Lawrence
into the body
4.2 #2),, and
to obtain the
Table 4.2 #1.

Livermore attacked the problem by determining what went
by ingestion and inhalation (picocuries per day) [Table
then applying appropriate factors to such input (exposure)
dose in rem. The particular ones I have used are given in

The major uncertainty of the "input" method lies in the diet--no one
knows precisely what it is, although sgveral attempts have been made to
define it. DOE-1982 used the BNL community B diet, i.e., one involving a
greater amount of food and also a greater input of contaminated food
(Note 8). Naidu et al (1980) who originally described it commented that
the diet represented prepared, not eaten food, and that in fact it was
more than a person could eat. This results in overestimation of dose.
The Lawrence Livermore group that used it for dose calculations
concurred.

The 1978 specific activities measured by the Livermore team were
made on 21 samples of coconut, 5 of Pandanus, 1 of breadfruit, 1 chicken,

2 pigs and 98 fish, on the whole a barely adequate number (Robison et al,

198la, 1982b). In 1986, however, that Laboratory took for analysis more
than 75 samples of coconut, more than 10 of breadfruit and some others;

the results were in agreement with the earlier ones, and a summary of all

data is shown in Table 4.2 #2, calculated for 1990.
Table 4.2 #2, p. 26, in Preliminary Report.)]

[(See also

Since the Rongelap people have expressed doubt about the reliability

and honesty of Department of Energy scientists (e.g., those from
Brookhaven and Livermore), a comparison trial was carried out in December
1987 in which samples collected at Rongelap and Ailinginae in the
presence of Senator Anjain and others were divided among several
laboratories for analysis (Livermore, Bremen, Neuherberg (Munich) and
Berkeley). The results demonstrated agreement (Note 9).
Cesium. J am taking 3,400 pCi/d (in 1990) as the exposure due to
cesiun-137, based on a total for foods listed in Table 4.2 #2 plus a 10%
allowance for a miscellaneous variety of others (Note 8, Table #1). The
whole-body, red marrow and bone surface doses [30-year] are just about
equal, 1.26 rem (based on the factors given in Table 4.2 #1).
*

Strontium. The strontius-90 estimates for 1990 are
1978 samples: I have been unable to learn how such sore
done since then. I am therefore taking 21.8 pCi/d based
plus a 25% increment for other miscellaneous foods. The
is 27.3 pci/d. The 30-year doses are: whole-body, .025
marrow,

.137 rem;

would be 33% nore.)

3000634

bone surfaces,

.300 rem.

based on the
work has been
on field samples —
total exposure
rem; red

(Scaled back to 1978, they

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