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The Compas project is concerned with the structural performance of metal overpacks which may be used to encapsulate vitrified high-level waste (HLW) forms before disposal in deep geological repositories. In this final stage of the project, analysis of an HLW overpack of realistic design is performed to predict its behaviour when subjected to likely repository loads. This analysis is undertaken with the benefit of experience gained in previous phases of the project in which the ability to predict overpack behaviour accurately, when subjected to a uniform external pressure, was demonstrated. Burial in clay, granite and salt environments has been considered and two distinct loading arrangements identified, in an attempt to represent the worst conditions that could be imposed by such media. The analysis successfully demonstrates the ability of the containers to withstand extreme, yet credible, repository loads.

Additional information

Authors: OVE ARUP & PARTNERS, Ove Arup & Partners, London (GB)
Bibliographic Reference: EUR 12839 EN (1990) 19 pp., FS, ECU 5
Availability: (2)
ISBN: ISBN 92-826-1529-4
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