An internal dosimetry intercomparison study

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Health Physics

DOI:https://doi.org/10.1097/00004032-199409000-00001· OSTI ID:54472

Hui, T E; Fisher, D R; McDonald, J C ^[1]; Loesch, R M ^[2]; Raddatz, C ^[3]

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1. Pacific Northwest Lab., Richland, WA (United States)
2. Dept. of Energy, Washington, DC (United States)
3. Nuclear Regulatory Commission, Washington, DC (United States)

Pacific Northwest Laboratory performed a study to evaluate the consistency of internal dosimetry assessments. A total of eleven laboratories, including DOE sites and NRC licensees, participated in this intercomparison study. Participants were asked to respond to five actual exposure scenarios, previously used in a similar European study. The participating dosimetrists assessed the data of the test scenarios and calculated results in terms of estimated radionuclide intake and the resulting internal doses. To maintain confidentiality, results are given without identifying any site. Except for one scenario, the results showed that the standard deviation of the final results on committed effective dose equivalent for each exposure scenario was about 30-50% of the mean value, giving a consistency slightly greater variant than that of the European study. The discrepancies can be attributed to variations in (1) the interpretation and statistical treatment of the bioassay data; (2) the biokinetic models applied; and (3) the computational tools used. This represents a preliminary study; further intercomparison testing is needed to fully evaluate the problem of dose-assessment inconsistency. 13 refs., 10 tabs.

• Sponsoring Organization: USDOE
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 54472
• Journal Information: Health Physics, Journal Name: Health Physics Journal Issue: 3 Vol. 67; ISSN HLTPAO; ISSN 0017-9078
• Country of Publication: United States
• Language: English

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