10/5/777 00803599 (Item 477 from file: 103) INS-81-016188; ERA-06-033829; Robison, Author(s): W.L.; Noshkin, V.E.; EDB-81-111866 Phillips, Title: Northern Marshall Islands radiological survey: W.A.; Eagle, radionuclide R.J. concentrations in fish and clams and estimated doses via the marine pathway Corporate Source: Lawrence Livermore National Lab., Publication Date: 18 Aug 1981 p 36 Report Number(s): UCRL-53853-Pt.3 Order Number: DE81030471 Contract Number (DOE): CA (USA) W-7405-ENG-48 Document Type: Report; Numerical data Language: English Journal Announcement: EDB8110 Availability: NTIS, PC A03/MF AOQl. Subfile: ERA (Technical (Energy Research Abstracts); Information Center). INS (US Atomindex input); TIC Country of ore gen i United States Country of Publication: United States Abstract: The survey consisted, in part, of an aerial radiological reconnaissance to map the external gamma-ray exposure rates. As a secondary phase, terrestrial and marine samples were collected to assess the radiological dose from pertinent food chains to atoll inhabitants. The marine sample collection, processing, and dose assessment methodology are presented as well as the concentration data for /sup 90/Sr, /sup 137/Cs, /sup 238/Pu, /sup 239 +240/Pu, /sup 241/Am, and any of the other gamma emitters in fish and clam muscle tissue from the different species collected. Doses are calculated from the average radionuclide concentrations in fish and clam muscle tissue assuming an average daily intake of 200 and 10 g, respectivelty. The /sup 90/Sr concentration in muscle tissue is very low and there is little difference in the average concentrations from the different fish from different atolls or islands. The /sup 239 +240/Pu concentration in the muscle tissue of all reef species, however, is higher than that in pelagic lagoon fish. In contrast, /sup 137/Cs concentrations are lowest in the muscle tissue of the bottom-feeding reef species and highest in pelagic logoon fish. Recent measurements of radionuclide concentrations in fish muscle tissue and other marine dietary items from international sources show that the average concentrations in species from the Marshall Islands are comparable to those in fish typically consumed as food in the United States and are generally lower than those in most international marine dietary items. The whole-body dose rates based on continuous consumption of 200 g/d of fish range from 0.028 to 0.1 mrem/y; the bone-marrow dose rates range from 0.029 to 0.12 mrem/y. The dose commitment, or 30-y integral doses, range from 0.00063 to 0.0022 rem for the whole body and from 0.00065 to 0.0032 rem for the bone Marrow. (ERB); Major Descriptors: *AMERICIUM 241 -- RADIOECOLOGICAL CONCENTRATION; (30 *AQUATIC ECOSYSTEMS -- RADIONUCLIDE MIGRATION; *BODY -- RADIATION DOSES ; *BONE MARROW ~- RADIATION DOSES; *CESIUM 137 ~-- RADIOECOLOGICAL CONCENTRATION; *FISHES -- RADIOACTIVITY; *FOOD CHAINS -- RADIONUCLIDE MIGRATION; *HUMAN POPULATIONS ~- DOSE COMMITMENTS; *MARSHALL ISLANDS -DOSE COMMITMENTS; *MARSHALL ISLANDS -- RADIATION DOSES; *MARSHALL ISLANDS -- RADIATION MONITORING; *MARSHALL ISLANDS -- RADIOECOLOGICAL CONCENTRATION; *MOLLUSCS -- RADIOACTIVITY; *PLUTONIUM 238 -RADIOECOLOGICAL CONCENTRATION; *PLUTONIUM 239 -- RADIOECOLOGICAL ry CONCENTRATION; *PLUTONIUM 240 -- RADIOECOLOGICAL CONCENTRATION; *STRONTIUM 90 -- RADIOECOLOGICAL CONCENTRATION Descriptors: DIET; EXPERIMENTAL DATA Broader Terms: \ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALKALI METAL ISOTOPES; ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; AMERICIUM ISOTOPES; ANIMAL TISSUES; ANIMALS; AQUATIC ORGANISMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BODY; CESIUM ISOTOPES; DATA; DOSES; ECOLOGICAL CONCENTRATION; ECOSYSTEMS; ENVIRONMENTAL TRANSPORT; = ‘