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Rock salt formations are candidates for the geological disposal of high level (radioactive) waste (HLW). HLW is a heat producing vitrified radioactive waste, obtained from the reprocessing of the spent fuel of light water reactors. The existing concept designs for radioactive waste repositories in rock salt can be divided in two main groups: those based on including the HLW in thick walled containers, and those which consist of vertical boreholes where the HLW canisters are placed without additional shielding. In the latter, two types of radiolytic effects are expected: radiation damage in the salt crystals of the rock; and radiolytic and thermal gas production and/or release. This document deals with whether these radiolytic effects can endanger the containment of the waste in a repository. Initially, within this programme, an in situ irradiation experiment in the Asse salt mine in Germany (HAW project) and a supplementary laboratory irradiation programme were planned. Because of licensing uncertainties in the in situ experient was cancelled in late 1992. However, as a consequence the laboratory experiments were extended. The results of these experiments are described in this document.

Additional information

Authors: GARCÍA CELMA A, Energieonderzoek Centrum Nederland, Petten (NL);DONKER H (EDITORS), Universiteit Utrecht, Instituut voor Aadwetenschappen (NL)
Bibliographic Reference: EUR 16743 EN (1996) 458pp., FS, ECU 49.50
Availability: Available from the (2)
ISBN: ISBN 92-827-4613-5
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