Performance criteria for radioactive waste repositories are often expressed in terms of dose or risk.
The characteristics of biosphere modelling for performance assessment are that : (a) potential release occurs in the distant future, (b) reliable predictions of human behaviour at the time of release are impracticable, and (c) the biosphere is not considered to be a barrier as the geosphere and the engineered barriers.
For these and other reasons, differences have arisen in the approaches to biosphere modelling for repository dose and risk assessment.
The BIOMOVS II Reference Biospheres Working Group has developed (a) a recommended methodology for biosphere model development, (b) a structured list of features, events and processes (FEPs) which the model should describe, and (c) an illustrative example of the recommended methodology.
The Working Group has successfully tested the Interaction Matrix (or Rock Engineering Systems, RES) approach for developing conceptual models.
The BIOMOVS II Working Groups on Reference Biospheres and Complementary Studies have laid the basis for considerable harmonisation in approaches to biosphere modelling of long term radionuclide releases.
Mots-clés Pascal : Pollution radioactive, Environnement, Biosphère, Stockage déchet radioactif, Radioisotope, Devenir polluant, Long terme, Phénomène transport, Modélisation, Modèle prévision, Radiocontamination, Ecosystème, Impact environnement, Analyse risque
Mots-clés Pascal anglais : Radioactive pollution, Environment, Biosphere, Radioactive waste storage, Radioisotope, Pollutant behavior, Long term, Transport process, Modeling, Forecast model, Radioactive contamination, Ecosystem, Environment impact, Risk analysis
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0113795
Code Inist : 001D16E. Création : 16/11/1999.