Near-field concepts for disposal of radioactive waste in a clay formation
The disposal of HLW-packages in underground repositories may itself create various phenomena in the local host rock and in the engineered barriers. It is necessary to check that such phenomena do not affect the ability of the host rock to isolate radioactive materials for very long periods of time and do not affect the performances of the engineered barriers. The prediction of the behaviour of radioactive waste, engineered barriers and host rock is a complex problem involving an understanding of various chemical and physical phenomena. The aim of this study was to develop backfilling concepts with capabilities to attenuate near-field effects of mined repositories in argillaceous host rocks. The characteristics and performance of a clay host rock and potentially favourable engineered barriers were examined and the system components which contribute to their durability were assessed. The work involved: (i) study of near-field clay and materials used in a HLW underground repository; (ii) study of selected representative emplacement configurations of a HLW repository; (iii) proposal of a concept and recommendations for future work.
Bibliographic Reference: EUR 13844 EN (1992) 132 pp., FS, ECU 11.25
ISBN: ISBN 92-826-3360-8
Record Number: 199210283 / Last updated on: 1994-12-02
Original language: en
Available languages: en