Development of an improved dosimetry system for the workers at the Mayak Production Association

Journal Article · Sat Jul 01 04:00:00 EDT 2000 · Health Physics

DOI:https://doi.org/10.1097/00004032-200007000-00012· OSTI ID:20080418

Khokhryakov, V; Suslova, K; Aladova, E; Vasilenko, E; Miller, S C; Slaughter, D M; Krahenbuhl, M P

Databases are being created that contain verified and updated dosimetry and worker history information for workers at the Mayak Production Association. many workers had significant external and internal exposures, particularly during the early years (1948--1952) of operation. These dosimetric and worker history data are to be used in companion epidemiology studies of stochastic and deterministic effects. The database contains both external and internal dose information and is being constructed from other databases that include radiochemical analyses of tissues, bioassay data, air sampling data, while body counting data, and occupational and worker histories. The procedures, models, methods, and operational uncertainties will be documented and included in the database, technical reports, and publications. The cohort of the stochastic epidemiological study is expected to include about 19,000 persons while the cohort for the deterministic epidemiological study is expected to include about 600 persons. For external dosimetry, workplace gamma, beta, and neutron doses are being reconstructed. The models used for this incorporate issues such as known isotopes, composition, shielding, further analysis of film bandage sensitivities, and records of direct measurements. Organ doses from external exposures are also being calculated. Methods for calculating dose uncertainties are being developed. For internal dosimetry, the organ doses have been calculated using the established FIB-1 biokinetic model. A new biokinetic model is being developed that includes more information of the solubility and biokinetics of the different chemical forms and particulate sizes of plutonium that were in the workplace. In addition, updated worker histories will be sued to estimate doses to some workers where direct measurements were not made. A rigorous quality control procedure is being implemented to ensure that the correct dosimetry data is entering the various databases being used by the epidemiologists.

• Research Organization: Federal Research Center Biophysics Inst., Chelyabinsk (RU)
• Sponsoring Organization: US Department of Energy
• OSTI ID: 20080418
• Journal Information: Health Physics, Journal Name: Health Physics Journal Issue: 1 Vol. 79; ISSN HLTPAO; ISSN 0017-9078
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
DATA BASE MANAGEMENT
MATHEMATICAL MODELS
MAYAK PLANT
OCCUPATIONAL EXPOSURE
PERSONNEL DOSIMETRY
RADIATION HAZARDS