SFS: Spent fuel stability under repository conditions

• Research unit: EU RFP
• Project number: 01.0076

Key words (English)

Nuclear waste disposal; spent fuel; performance assessment; safety;
Nuclear Fission; Radioactive Waste; Safety
JRC

Alternative project number (English)

EU project number: FIKW-CT-2001-00192

Research programs (English)

EU-programme: 5. Frame Research Programme - 5.5.2 Nuclear fission

Short description (English)

See abstract

Further information (English)

Full name of research-institution/enterprise:
Nationale Genossenschaft für die Lagerung radioaktive Abfälle NAGRA

Sicherheitsanalysen

Partners and International Organizations (English)

CEA (F), FZK (D), ENRESA (E), SCK/CEN (B), SKB (S), NAGRA (CH), ANDRA (F)

Abstract (English)

This project aims to develop and validate a reliable and robust model to predict the radionuclides (RN) release rate as a function of time for the spent nuclear fuel (RN source term), which can there after be used in the performance assessment exercises for repository systems.

The development of such source terms models requires:
(i) a scientific consensus of what are the major mechanisms and
(ii) the acquisition of key parameters by dedicated experiments on real and simulated spent fuel.

This project will focus on the major scientific issues for the RN source terms:
(i) the evolution with time of the Instant Release Fraction which is instantaneously released when water arrives,
(ii) the mechanisms governing the grains alteration and the subsequent RN release the solubility controlled or radiolytic dissolution,
(iii) the development of a global, robust and consensual predictive model for the RN release rate from spent nuclear fuel.

References in databases (English)

Swiss Database: Euro-DB of the
State Secretariat for Education and Research
Hallwylstrasse 4
CH-3003 Berne, Switzerland
Tel. [phone]
Swiss Project-Number: 01.0076