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Assessment of the variability of critical group doses and implications for dose limitation. - RP0142

i)To identify those factors in a critical group dose assessment whose variability will lead to a variation in the radiation doses received by individuals within the group. ii)To quantify the likely ranges in the parameter values used to represent the above factors. Items to be considered will include habit data, such as food intakes rates; data relating to location such as occupancy factors; and data relating to doses per unit intake, including the effects of differences in body mass and metabolism. iii)To estimate the distribution in individual doses within the critical group due to the authorised discharges for 2 particular sites. iv)To examine the implications of the likely distribution of doses in relation to the system of radiological protection. The emphasis will be on the implications of the authorisation of routine discharges of radionuclides from nuclear sites but consideration will also be given to the implications for comparisons of critical group dose estimates with dose limits and dose constraints. Any implications for methods of assessing critical group doses will also be considered. v)A final report will be prepared.
Time-Scale and Cost
From: 1995

To: 1997

Cost: £100,000
Contractor / Funded Organisations
National Radiological Protection Board