Analysis of the NAEG model of transuranic radionuclide transport and dose

Conference · Thu Nov 01 00:00:00 EST 1984

OSTI ID:6308484

Kercher, J R; Anspaugh, L R

We analyze the model for estimating the dose from /sup 239/Pu developed for the Nevada Applied Ecology Group (NAEG) by using sensitivity analysis and uncertainty analysis. Sensitivity analysis results suggest that the air pathway is the critical pathway for the organs receiving the highest dose. Soil concentration and the factors controlling air concentration are the most important parameters. The only organ whose dose is sensitive to parameters in the ingestion pathway is the GI tract. The air pathway accounts for 100% of the dose to lung, upper respiratory tract, and thoracic lymph nodes; and 95% of its dose via ingestion. Leafy vegetable ingestion accounts for 70% of the dose from the ingestion pathway regardless of organ, peeled vegetables 20%; accidental soil ingestion 5%; ingestion of beef liver 4%; beef muscle 1%. Only a handful of model parameters control the dose for any one organ. The number of important parameters is usually less than 10. Uncertainty analysis indicates that choosing a uniform distribution for the input parameters produces a lognormal distribution of the dose. The ratio of the square root of the variance to the mean is three times greater for the doses than it is for the individual parameters. As found by the sensitivity analysis, the uncertainty analysis suggests that only a few parameters control the dose for each organ. All organs have similar distributions and variance to mean ratios except for the lymph modes. 16 references, 9 figures, 13 tables.

• Research Organization: Lawrence Livermore National Lab., Livermore, CA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6308484
• Report Number(s): UCRL-91781; CONF-830610-6; TRN: US0302924
• Resource Relation: Conference: Nevada Applied Ecology Group transuranics (and associated radionuclides) Information Conference, Las Vegas, NV (US), 06/28/1983--06/30/1983; Other Information: PBD: 1 Nov 1984
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS
LYMPH NODES
SENSITIVITY ANALYSIS
ALPHA DECAY RADIOISOTOPES
BODY
DIGESTIVE SYSTEM
PLUTONIUM 239
ENVIRONMENTAL EXPOSURE PATHWAY
RADIONUCLIDE KINETICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
DOSES
ENVIRONMENTAL TRANSPORT
EVEN-ODD NUCLEI
HEAVY NUCLEI
ISOTOPES
MASS TRANSFER
NUCLEI
ORGANS
PLUTONIUM ISOTOPES
RADIOISOTOPES
YEARS LIVING RADIOISOTOPES
510302* - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- Terrestrial Ecosystems & Food Chains- (-1987)
560161 - Radionuclide Effects
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& Toxicology- Man