Table 19. The contribution of each radionuclide to the 30-y integral doses at Likiep Island.
30-y integral dose (rem)
Whole body
Bone marrow
MLSCdiet
Pathway and nuclide
Ingestion
13765
70Spe
23942405,
241 amy
MLSC diet
(imports
BNL diet
(imports
BNL diet
available)
(community A)
available)
(community A)
0.092
----
External gamma®
13765 4C9
Inhalation
23942405,
241 Am
TOTAL
0.50
-__°
0.092
0.0064
0.000016
0.00011
0.51
0.046
0.000097
0.00033
0.026
0.026
0.026
0.026
--
--
0.00014
0.00014
a
a
0.0001!
0.00011
0.12
0.53
0.13
0.58
&@ The actual external doses will be less than those listed here because of shielding by
houses and other buildings and coral gravel spread around the houses.
Table 21 lists the 30-y integral doses for Likiep and Rongelap Islands by exposure
pathway. The contributions from the external gamma pathway for most outer atolls are
less than 30% of that from the food ingestion pathways for the MLSC diet when imported
foods are available.
For atolls more in line with the trajectory of the Bravo cloud, the
external gamma pathway contribution is between 40 and 70% of the total dose for the
MLSC diet.
For the BNL diets and the MLSC diet when imported foods are unavailable,
the dose from the ingestion pathway greatly exceeds that from the external gamma
pathway. The contribution of the marine, cistern water, and inhalation pathways is very
small relative to the terrestrial food chain pathway.
Again, the results for Rongelap and
Likiep Islands are similar to those for the other atolls and islands.
Se
46