Skip to main content
Vai all'homepage della Commissione europea (si apre in una nuova finestra)
italiano it
CORDIS - Risultati della ricerca dell’UE
CORDIS
Contenuto archiviato il 2024-04-16

A coordinated Research Initiative for Evaluating and Enhancing Chemical Models Used in Radiological Risk Assessment

Obiettivo

The international CHEMVAL Project, initiated in 1987, has been assessing the validity of computer-based models used to describe the geochemistry of radioactive waste disposal systems. The original project /1/2/3/ was concerned, primarily, with the verification of equilibrium models though a number of attempts were made at a priori predictive validation. CHEMVAL2 aims at building on this earlier study by targeting specific areas shown to be of particular concern in radiological assessment. The following aspects are studied:

Temperature effects, ionic strength effects, organic complexation, sorption processes Co: precipitation, coupled modelling.
The international CHEMVAL project has been assessing the validity of computer based models used to describe the chemistry of radioactive waste disposal systems. This project aims to build on earlier studies by targeting specific areas shown to be of particular concern in radiological assessment. Working groups have been established for all technical activities. These will undertake data collation and model verification tests. More demanding validation exercises will be considered only when the new models have been verified adequately but searches for suitable laboratory and field experiments have already begun. In the case of coupled chemical transport modelling, where most of the codes to be used have already been tested to some extent, the situation is more advanced. Bespoke column experiments have been commissioned allowing a methodology for predictive migration modelling to be specified.

A programme of work aimed at assessing the effects of elevated temperatures on the speciation and solubility of radioelements in groundwaters is underway and a series of verification tests have been formulated.

The objectives of work on sorption processes within CHEMVAL2 are to compare the various models which have been incorporated into geochemical speciation codes and to assess their usefulness for simulating observed behaviour in the laboratory and the field. A review of sorption models of varying complexity has been undertaken with emphasis on data availability and the applicability of each approach to predictive modelling studies.
Work programme:

1. Definition and initiation of programme, production of status reviews.
2. Execution of research programmes for each technical area encompassing data review, model development, code verification and model validation.
3. Comparison with experimental studies and reporting.

Campo scientifico (EuroSciVoc)

CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.

È necessario effettuare l’accesso o registrarsi per utilizzare questa funzione

Programma(i)

Programmi di finanziamento pluriennali che definiscono le priorità dell’UE in materia di ricerca e innovazione.

Argomento(i)

Gli inviti a presentare proposte sono suddivisi per argomenti. Un argomento definisce un’area o un tema specifico per il quale i candidati possono presentare proposte. La descrizione di un argomento comprende il suo ambito specifico e l’impatto previsto del progetto finanziato.

Invito a presentare proposte

Procedura per invitare i candidati a presentare proposte di progetti, con l’obiettivo di ricevere finanziamenti dall’UE.

Dati non disponibili

Meccanismo di finanziamento

Meccanismo di finanziamento (o «Tipo di azione») all’interno di un programma con caratteristiche comuni. Specifica: l’ambito di ciò che viene finanziato; il tasso di rimborso; i criteri di valutazione specifici per qualificarsi per il finanziamento; l’uso di forme semplificate di costi come gli importi forfettari.

CSC - Cost-sharing contracts

Coordinatore

Atkins Wootton Jeffreys Consultants Ltd
Contributo UE
Nessun dato
Indirizzo
Woodcote Grove Ashley Road
KT18 5BW Epsom
Regno Unito

Mostra sulla mappa

Costo totale

I costi totali sostenuti dall’organizzazione per partecipare al progetto, compresi i costi diretti e indiretti. Questo importo è un sottoinsieme del bilancio complessivo del progetto.

Nessun dato

Partecipanti (8)

Il mio fascicolo 0 0