Feasibility studies for assessing internal exposure to 233U

The potential internal occupational exposure encountered as a consequence of the 232Th-233U fuel cycle are likely to arise predominantly from the inhalation of 232Th, 233U and (232Th + 233U) compounds of absorption Types M and S. In the past, although direct and indirect methods for assessments of i...

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Bibliographic Details
Published inRadiation protection dosimetry Vol. 105; no. 1-4; p. 365
Main Authors Mehta, D J, Sharma, R C, Ramanujam, A, Haridasan, T K, Sawant, P D, Rathinam, M
Format Journal Article
LanguageEnglish
Published England 01.07.2003
Subjects
Air Pollutants, Radioactive - pharmacokinetics
Air Pollutants, Radioactive - urine
Feasibility Studies
Humans
Inhalation Exposure
Lung - metabolism
Occupational Exposure - analysis
Radiation Dosage
Radiometry - methods
Uranium - analysis
Uranium - pharmacokinetics
Uranium - urine
Urinalysis - methods
Whole-Body Counting - methods
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Summary:The potential internal occupational exposure encountered as a consequence of the 232Th-233U fuel cycle are likely to arise predominantly from the inhalation of 232Th, 233U and (232Th + 233U) compounds of absorption Types M and S. In the past, although direct and indirect methods for assessments of internal exposure to 232Th and its daughters were developed, standardised and employed, no such attempts have been made with regard to 233U and 233U + 232Th. Therefore, feasibility studies for assessing internal exposure to 233U have been conducted using three methods: urine bioassay, in vivo counting and measurement of thoron gas in the exhaled breath of a worker. This paper describes details of these studies and discusses the results obtained.
ISSN:0144-8420
1742-3406
DOI:10.1093/oxfordjournals.rpd.a006259