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Radiat Prot Dosimetry. 2011 Mar;144(1-4):361-6. doi: 10.1093/rpd/ncq315. Epub 2010 Oct 30.

Optimisation of internal contamination monitoring programme by integration of uncertainties.

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  • 1Internal Dosimetry Department, Institute for Radiological Protection and Nuclear Safety, IRSN/DRPH/SDI, BP 17, F-92262 Fontenay-aux-Roses Cedex, France.

Abstract

Potential internal contamination of workers is monitored by periodic bioassay measurements interpreted in terms of intake and committed effective dose by the use of biokinetic and dosimetric models. After a prospective evaluation of exposure at a workplace, a suitable monitoring programme can be defined by choosing adequate measurement techniques and frequency. In this study, the sensitivity of a programme is evaluated by the minimum intake and dose, which may be detected with a given level of confidence by taking into account uncertainties on exposure conditions and measurements. This is made for programme optimisation, which is performed by comparing the sensitivities of different alternative programmes. These methods were applied at the AREVA NC reprocessing plant and support the current monitoring programme as the best compromise between the cost of the measurements and the sensitivity of the programme.

PMID:
21037264
[PubMed - indexed for MEDLINE]
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