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Title: Uncertainty and sensitivity analysis of historical vegetation iodine-131 for measurements in 1945--1947; Hanford Environmental Dose Reconstruction Project

Abstract

The Hanford Environmental Dose Reconstruction (HEDR) Project is developing environmental transport and dose models to estimate the doses to individuals and populations from exposure to radionuclides released from Hanford nuclear facilities since 1944. The validity of these models will be assessed in part by comparing model predictions with environmental measurements of radionuclides. One potentially important set of environmental radionuclide measurements is those made on vegetation samples that, beginning in 1945, were collected on and around the Hanford Site. However, from October 1945 through mid-1948, the available technology permitted the vegetation samples to be measured only for total radioactivity rather than for specific radionuclides. At that time, the factors needed to convert total radioactivities to concentrations ({mu}Ci/kg) of iodine-131, the predominant radionuclide that was released into the air from Hanford stacks in the mid-1940s, were not well known or accurately quantified. A search of historical Hanford records by HEDR Project staff uncovered the original background-corrected radiation measurements, made using a Geiger-Mueller (GM) detector system, for vegetation samples that were collected from October 1945 through early August 1946. HEDR Project staff have developed a model that can be used to convert these radiation measurements to iodine-131 concentrations ({mu}Ci/kg). It is anticipated thatmore » this equation will be used to obtain more accurate concentrations of iodine-131 for vegetation for the purpose of validating vegetation iodine-131 concentrations that will be estimated by HEDR Project air-pathway transport models.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest Lab., Richland, WA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
145175
Report Number(s):
PNWD-1978-HEDR
ON: DE92017949; TRN: 92:025652
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
56 BIOLOGY AND MEDICINE, APPLIED STUDIES; HANFORD RESERVATION; RADIOACTIVE EFFLUENTS; HUMAN POPULATIONS; RADIATION DOSES; PLANTS; RADIOECOLOGICAL CONCENTRATION; HISTORICAL ASPECTS; IODINE 131; SENSITIVITY ANALYSIS

Citation Formats

Gilbert, R.O., Mart, E.I., Strenge, D.L., and Miley, T.B. Uncertainty and sensitivity analysis of historical vegetation iodine-131 for measurements in 1945--1947; Hanford Environmental Dose Reconstruction Project. United States: N. p., 1994. Web. doi:10.2172/145175.
Gilbert, R.O., Mart, E.I., Strenge, D.L., & Miley, T.B. Uncertainty and sensitivity analysis of historical vegetation iodine-131 for measurements in 1945--1947; Hanford Environmental Dose Reconstruction Project. United States. doi:10.2172/145175.
Gilbert, R.O., Mart, E.I., Strenge, D.L., and Miley, T.B. Tue . "Uncertainty and sensitivity analysis of historical vegetation iodine-131 for measurements in 1945--1947; Hanford Environmental Dose Reconstruction Project". United States. doi:10.2172/145175. https://www.osti.gov/servlets/purl/145175.
@article{osti_145175,
title = {Uncertainty and sensitivity analysis of historical vegetation iodine-131 for measurements in 1945--1947; Hanford Environmental Dose Reconstruction Project},
author = {Gilbert, R.O. and Mart, E.I. and Strenge, D.L. and Miley, T.B.},
abstractNote = {The Hanford Environmental Dose Reconstruction (HEDR) Project is developing environmental transport and dose models to estimate the doses to individuals and populations from exposure to radionuclides released from Hanford nuclear facilities since 1944. The validity of these models will be assessed in part by comparing model predictions with environmental measurements of radionuclides. One potentially important set of environmental radionuclide measurements is those made on vegetation samples that, beginning in 1945, were collected on and around the Hanford Site. However, from October 1945 through mid-1948, the available technology permitted the vegetation samples to be measured only for total radioactivity rather than for specific radionuclides. At that time, the factors needed to convert total radioactivities to concentrations ({mu}Ci/kg) of iodine-131, the predominant radionuclide that was released into the air from Hanford stacks in the mid-1940s, were not well known or accurately quantified. A search of historical Hanford records by HEDR Project staff uncovered the original background-corrected radiation measurements, made using a Geiger-Mueller (GM) detector system, for vegetation samples that were collected from October 1945 through early August 1946. HEDR Project staff have developed a model that can be used to convert these radiation measurements to iodine-131 concentrations ({mu}Ci/kg). It is anticipated that this equation will be used to obtain more accurate concentrations of iodine-131 for vegetation for the purpose of validating vegetation iodine-131 concentrations that will be estimated by HEDR Project air-pathway transport models.},
doi = {10.2172/145175},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}