TASK TITLE
‘BUDGET AND REPORTING ISDE . SATE 2REPARED
Jose Reassessuient for Rongelap anc
Veirik
|
CONTRACTOR NAME
/SCDE
L9a.
Associated Universities. Inc.
Facility Recuiracents
/
GK-91202-9L-1-"8)
(003010)
,
3NL
3IN NUMBER
|
; TASK NO.
04/92/79
;
REV. OC.
0
icipated tnat work for this proposal will use existing Labora-
L9c.
Purpose.
To look for correlations secwaen the incidence of chyroid nodules in she
snhabitancts of Rongelap and Utirik Islands (Marshall Islands) and the
reassessec dose estimates.
This study will fuse cogether all available information on fallout from
the 3RAVO test and using advanced analiveical techniques (now available) cderive
realistic ¢ose ascinates 29 the inhabitants of Rongelap and Uttrik.
The rte-
suits should sroviae
information towards alucidating the whole question or Low=
level erfeccs ¢f vraciacion.
~9d,
Jackzround.
incidence
of thvrcid nodules, benign and malignant, in the exposed populations of Urcirix and Rongelap nas indicaced critical differences in corvtespon=
dence between nodule incidence and thyroid dose for the populactons.
The
estimated external dose received from =the cime fallout began to the time of
avacuation shows that che Rongelap population received an external dose (175
tads) which was abouc 13 cimes chac for the Utirik popularion (14 rads), and
she thyroid dese was about 10 times larger, whereas the incidence of thyroid
nodules in the two sopulations were not significantly different.
A preliminary study has iadicaced thac the critical area of invescization
that could shed Lizhe is the period during the fallout and evacuacion for boch
che islands.
In addition, the face thac the Ucirik population returned within
120 days following evacuacion, whereas the Rongelap copulation returned only
after three years, requires cthae we Lcok closely ac the Utirik papulaticon
ia
tarms of a lenger exposure period, born incernal and external.
fFurcher studies
would, therefore, have to concentrate on the re-examination of all available
data in reports issued bv various agencies during thac period, consultations
with seientific personnel involved ac thac time, ideneifying the areas of uncertainty, and using appropriate computer sroegrams co analyze the data.
The
end result will enable us to look for correlations berween the incidence of
thyroid nodules and che raassessed dosa estimatas.
GR. 103