The Mayak worker dosimetry sytem (MWDS-2013): Determination of the individual scenario of inhaled plutonium intake in the Mayak workers

A. B. Sokolova*, Birchall, A. V. Efimov, V. V. Vostrotin, Marie-Denise Dorrian

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

In order to estimate doses of workers exposed to plutonium, it is necessary to make assumptions about both the route and the time course of intake. The objective of this study was to determine a time course for the inhalation rate for plutonium (intake regime) useful for biokinetic modeling. Records from workplace air sampling, personnel biophysical examinations and autopsy data from former Mayak Production Association (MPA) workers were used. Plutonium accumulation strongly correlated with the volumetric activity of plutonium in workplace air. Using data from activity in air at MPA workplaces over time, a three-step function of intake was adopted. The adequacy of this three-step function was tested by comparing predicted doses using more complicated intake regimes. Uncertainties on the three-step function were also characterized based on air sampling data. The three-step function was assumed to be common to all workers, but an individual intake regime for each worker was calculated by convoluting it with the worker's actual employment history.

Original languageEnglish
Pages (from-to)83-89
Number of pages7
JournalRadiation Protection Dosimetry
Volume176
Issue number1-2
DOIs
Publication statusPublished - 1 Oct 2017

Bibliographical note

Funding Information:
This work was conducted as part of the Joint Coordinating Committee for Radiation Effects Research Project 2.4, Mayak Worker Dosimetry. It was jointly funded by the US Department of Energy and the Federal Medical Biological Agency of the Russian Federation.

Publisher Copyright:
© The Author 2016. Published by Oxford University Press. All rights reserved.

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