Document Details


Title:
MODELING RADIATION EXPOSURES TO POPULATIONS FROM RADIOACTIVITY RELEASED TO THE ENVIRONMENT
Author(s):
NG, Y C; ROBINSON, W L; WILSON, D W; ROBISON, W L [LAWRENCE LIVERMORE LABORATORY, U. OF CA]
Subject Terms:
RADIOISOTOPES; FISSION PRODUCTS; CESIUM 137; FOOD; DOSIMETRY; ECOSYSTEMS
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1973 May 11
Declassification Status:
Never classified
Document Pages:
0015
Accession Number:
NV0045062
Document Number(s):
UCRL74389
Originating Research Org.:
LAWRENCE LIVERMORE LABORATORY, U. OF CA
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
TWO APPROACHES ARE USED TO ESTIMATE THE POTENTIAL POPULATION DOSAGES ( MAN-REM ) PER CURIE RELEASE OF CESIUM-137 IN THE UNITED STATES FROM A HYPOTHETICAL RELEASE OF A FRACTION OF THE PROJECTED FISSION PRODUCT I NVENTORY IN 2000. ONE METHOD INVOLVES A PARAMETRIC ANALYSIS OF RELATIONSHIPS BETWEEN FAL LOUT RATES AND CESIUM-137 IN THE VARIOUS COMPONENTS OF THE DIET. THE OTHER METHOD IS A PATHWAYS ANALYSIS USING DOSE-TO-MAN MODELS OF RA DIONUCLIDE TRANSPORT IN THE ENVIRONMENT AND UPTAKE IN MAN. BOTH METHODS ARE APPLIED TO AN INPUT-OUTPUT MODEL OF RADIONUCLIDE FLUX THROUGH ENVIRONMENTAL COMPARTMENTS AND MAN. POPULATION CHARACTERISTIC S ARE DEVELOPED USING CENSUS DATA AND DIETARY HABITS. MAN-REM PER CURIE ESTIMATES ARE DEVELOPED FOR SEVERAL FOOD-CHAINS AND EXTERNAL EXPOSURES. EXTERNAL EXPOSURE FROM SOIL BURDENS CONTRIBUTES WE LL OVER HALF OF THE MAN-REM, FOLLOWED BY TERRESTRIAL FOOD-CHAINS, WITH MUCH LOWER CONTRIBUTION COMING FROM AQUATIC FOOD CHAINS. SUBMERSION A ND INHALATION EXPOSURES FROM EITHER THE INITAL CLOUD OR FROM RESUSPENS ION ARE INSIGNIFICANT CONTRIBUTIONS. CALCULATIONS BY THE TWO METHODS ARE IN GOOD AGREEMENT. THE MAN-REM PER CURIE ESTIMATES ARE USED TO ORDER THE IMPORTANCE OF THE VARIOUS ROUTE S OF EXPOSURE AND TO INVESTIGATE THE SIGNIFICANCE OF CONTAMINATION IN VARIOUS PARTS OF THE ENVIRONMENT.


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