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FP5

Quantification of the Distribution of Radiation Doses Received by Humans through the Various Pathways in a Contaminated Indoor Environment (INDOOR DOSE), Final report (summary)

Project ID: FIKR-CT-2000-00043
Funded under: FP5-EAECTP C

Abstract

The primary project objective was to develop a model methodology that can be used to evaluate the significance of each of the different contributions to radiation dose that would be received in the indoor environment after an airborne radioactive contamination of some sort has occurred. It was clear from previous work carried out by the same workers that the currently available data would not be sufficient to allow adequately detailed modelling of these dose contributions. Therefore, a suite of experimental investigations were planned in connection with the project work.
In relation to dose assessments after airborne releases, particularly the dose contributions from deposition of contaminants on the human body have in the past largely been ignored. In those few cases, where such doses are considered (e.g. in the European standard risk assessment model COSYMA), the level of detail was clearly inadequate. For instance, deposition velocity to and clearance from humans are in COSYMA both assigned one standard value for all aerosol, which the work of the project partners has shown to be inappropriate. Recent investigations showed that both beta and gamma doses from deposition on humans could at least in some cases be highly significant. It was therefore an objective of the INDOOR DOSE project to address this shortcoming by identifying model methodologies and parameter ranges that would allow detailed estimation of the doses from contamination of humans.

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Record Number: 8198 / Last updated on: 2007-01-04
Category: PROJ