Incorporation of additional radionuclides and the external exposure pathway into the BECAMP (Basic Environmental Compliance and Monitoring Program) radiological assessment model

Technical Report · Tue Nov 01 04:00:00 EST 1988

OSTI ID:6656524

Ng, Yook C; Rodean, H C; Anspaugh, L R

The Nevada Applied Ecology Group (NAEG) Model of transport and dose for transuranic radionuclides was modified and expanded for the analysis of radionuclides other than pure alpha-emitters. Doses from internal and external exposures were estimated for the inventories and soil distributions of the individual radionuclides quantified in Areas 2 and 4 of the Nevada Test Site (NTS). We found that the dose equivalents via inhalation to liver, lungs, bone marrow, and bone surface from the plutonium isotopes and /sup 241/Am, those via ingestion to bone marrow and bone surfaces from /sup 90/Sr, and those via ingestion to all the target organs from /sup 137/Cs were the highest from internal exposures. The effective dose equivalents from /sup 137/Cs, /sup 152/Eu, and /sup 154/Eu were the highest from the external exposures. The /sup 60/Co, /sup 152/Eu, /sup 154/Eu, and /sup 155/Eu dose estimates for external exposures greatly exceeded those for internal exposures. The /sup 60/Co, /sup 90/Sr, and /sup 137/Cs dose equivalents from internal exposures were underestimated due to the adoption of some of the foodchain parameter values originally selected for /sup 239/Pu. Nonetheless, the ingestion pathway contributed significantly to the dose estimates for /sup 90/Sr and /sup 137/Cs, but contributed very much less than external exposures to the dose estimates for /sup 60/Co. Therefore, the use of more appropriate values would not alter the identification of important radionuclides, pathways, target organs, and exposure modes in this analysis. 19 refs., 13 figs., 12 tabs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6656524
• Report Number(s): UCRL-53893; ON: DE89004145
• Country of Publication: United States
• Language: English

Related Subjects

560151* -- Radiation Effects on Animals-- Man
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
ALPHA-BEARING WASTES
AMERICIUM 241
AMERICIUM ISOTOPES
ANIMAL TISSUES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
BIOLOGICAL PATHWAYS
BODY
BONE MARROW
CESIUM 137
CESIUM ISOTOPES
COBALT 60
COBALT ISOTOPES
DIGESTIVE SYSTEM
DISTRIBUTION
DOSE EQUIVALENTS
ELECTRON CAPTURE RADIOISOTOPES
EUROPIUM 152
EUROPIUM 154
EUROPIUM ISOTOPES
EVALUATION
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXTERNAL IRRADIATION
FOOD CHAINS
GLANDS
HEAVY NUCLEI
HEMATOPOIETIC SYSTEM
HOURS LIVING RADIOISOTOPES
INGESTION
INTAKE
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
INTERNAL IRRADIATION
IRRADIATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIVER
LUNGS
MATERIALS
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
NATIONAL ORGANIZATIONS
NEVADA TEST SITE
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANS
PLUTONIUM 239
PLUTONIUM ISOTOPES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RESPIRATORY SYSTEM
SOILS
SPATIAL DISTRIBUTION
STRONTIUM 90
STRONTIUM ISOTOPES
TISSUES
US DOE
US ORGANIZATIONS
WASTES
YEARS LIVING RADIOISOTOPES