Dose reconstruction for residents living in buildings with moderate and minor 60Co contamination in rebar

F. Y. Hsu, H. Y. Tsai, C. Y. Hsu, C. J. Tung*, C. C. Liao, Y. S. Tsay

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

1 Scopus citations

Abstract

Previously, we have reconstructed cohort dependent individual doses for residents living in rebar buildings of high 60Co contamination. These reconstructions were carried out using intensively collected TLD data on exposure rates at locations of 1 m height and 1 m × 1 m intersections. The present work deals with dose reconstructions for residents living in rebar buildings of moderate and minor 60Co contamination. Since only limited data on exposure rates from survey meters were available, dose reconstructions were based on these data using interpolations. To utilize such data, we examined them with respect to all factors that influenced the dose uncertainties. The interpolated results were given in terms of contour plots (isodose curves) and compared with corresponding results derived from TLD data and Monte Carlo simulations. The comparison revealed that survey meter data could be used to provide reasonable and conservative estimates of residential doses. By applying the cohort-dependent room occupancy factor and the site-dependent area occupancy factor, we reconstructed cohort dependent individual doses and associated uncertainties. Results of dose reconstructions for all residents living in contaminated rebar buildings were provided to the Atomic Energy Council and health authorities for epidemiologic and medical uses.

Original languageEnglish
Pages (from-to)357-364
Number of pages8
JournalHealth Physics
Volume85
Issue number3
DOIs
StatePublished - 01 09 2003
Externally publishedYes

Keywords

  • Accident analysis
  • Co
  • Contamination
  • Dose assessment

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