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Dose reconstruction for an occupational cohort at the Savannah River nuclear facility: evaluation of a hybrid method.

Authors
Hamra-G; Nylander-French-LA; Richardson-D
Source
Radiat Prot Dosim 2008 Apr; 131(2):188-197
NIOSHTIC No.
20035056
Abstract
The Savannah River Site (SRS) is the only nuclear facility in the United States that produces tritium, a radioactive isotope of hydrogen. The purpose of the study was to derive annual tritium dose estimates for SRS employees through the development of a job-exposure matrix. The proposed method is unique in that along with qualitative information on job, area and time of employment, it utilises recorded annual whole-body dose measures, when available, in order to estimate doses from tritium intakes of the monitored workers. Using information from 75 253 dose measures for the period 1954-1978, the average proportion of the whole-body dose that was due to tritium intake was calculated; these proportions were allowed to vary by job, area and time period. This information was used to assign tritium dose levels for 43 590 employment-years. The collective estimated tritium dose was 4319 mSv compared with the total known tritium dose of 17 382 mSv. The correlation (R2) of estimated tritium dose with known tritium dose was 0.68.
Keywords
Occupational-exposure; Occupational-health; Work-areas; Work-environment; Workplace-monitoring; Nuclear-hazards; Nuclear-properties; Nuclear-resonance; Dosimetry
Contact
David Richardson, Department of Environmental Sciences and Engineering, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7400
CODEN
RPDODE
Publication Date
20080401
Document Type
Journal Article
Email Address
david.richardson@unc.edu
Funding Type
Grant
Fiscal Year
2008
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008673; Grant-Number-R01-OH-0007871
Issue of Publication
2
ISSN
0144-8420
Priority Area
Research Tools and Approaches: Cancer Research Methods
Source Name
Radiation Protection Dosimetry
State
NC
Performing Organization
University of North Carolina, School of Public Health
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