A dose reconstruction of 60Co-contaminated window frames in a Taiwanese school

K. M. Brock, C. M. Neumann, K. A. Higley, W. P. Chang, A. M. Rossignol

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Since 1992, hundreds of buildings in Taiwan were discovered to have 60Co contamination in the structural rebar. The contamination resulted from improper handling of 60Co-contaminated scrap metal in 1982 and 1983, which subsequently was recycled and used throughout Taiwan. Hsin-hsin Kindergarten school enrolled about 600 students over the 10-y period before the contamination was discovered. Hsin-hsin Kindergarten had three 60Co-contaminated steel window frames with measured dose rates on contact up to 150 μSv h-1. In this study, a range of potential doses received by the Hsin-hsin Kindergarten students were estimated using ISOSHLD dose modeling software. ISOSHLD is a rapid, inexpensive screening tool to reconstruct dose ranges. To assess the potential risks to habitants of the school for the first year after construction, calculated dose rate ranges of 0.08 μSv h-1 to 75.38 μSv h-1 were then applied to the International Council on Radiation Protection 60 nominal detriment coefficients for stochastic effects. Risk estimates ranged from 1.46 × 10-4 to 7.42 × 10-4 excess fatal cancers per lifetime.

Original languageEnglish
Pages (from-to)3-7
Number of pages5
JournalHealth Physics
Issue number1
Publication statusPublished - 2001
Externally publishedYes


  • Co
  • Contamination
  • Dose
  • Radioactivity

ASJC Scopus subject areas

  • Environmental Science (miscellaneous)
  • Health, Toxicology and Mutagenesis
  • Toxicology
  • Physics and Astronomy (miscellaneous)
  • Public Health, Environmental and Occupational Health
  • Environmental Chemistry
  • Environmental Science(all)


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