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Assessment of dose from faecal measurement data
D Bingham1, M Dolan, R J Cockerill
1AWE, Aldermaston, Reading RG7 4PR, UK. derek.bingham@awe.co.uk
Abstract:
At AWE, an annual faecal sample forms part of the internal monitoring strategy for insoluble forms of plutonium. The setting of a derived investigation level (DIL) and assessment of doses from results for faecal samples can pose some difficulties in view of uncertainties related to: (a) the time and number of intakes during the monitoring period and (b) the result from a single sample. This paper uses Monte Carlo simulation to investigate the activity that would be expected in faeces following varying numbers of intake events during the monitoring period. The variation in faecal activity of a long-term excretor is also investigated. The implications of the results for the setting of the DIL and assessment of dose are discussed.
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