Radionuclide release from solidified high level waste
The overall aim of the research is to ensure that the Community reference glasses and the UK reference vitrified high level waste forms in particular are suitable for eventual disposal in either hard rock or clay. The release of radioisotopes from the reference waste forms, under conditions that will or could occur after disposal, is investigated. These studies will provide data for mathematical models of the long-term health effects of radioactive waste repositories. Samples of glass were made up containing a full inactive simulant of the high level waste. These were doped with isotopes of the four radioelements Am, Pu, Np, Tc and, after crushing, were mixed with possible components of the repository and water and were loaded into capsules. The capsules were held in an oven, usually at 60 C, for periods of up to a year before they were opened and the water overlying the solids was sampled and analysed. The conclusions obtained are presented. Further results concerning steady-state concentrations of Np, Pu, Am and Tc under varying conditions as well as with various barrier materials and leachants are also discussed.
Bibliographic Reference: EUR 13604 EN (1991) 70 pp., FS, ECU 7.50
ISBN: ISBN 92-826-2861-2
Record Number: 199111154 / Last updated on: 1994-12-02
Original language: en
Available languages: en