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Development of materials specifications and emplacement procedures for backfilling nuclear fuel waste vaults

  • Lopez R. S. 
  • Yong R. N. 
  • Boonsinsuk P. 
  • Card E. C. 
  • White P. 
Article

Abstract

Atomic Energy of Canada Limited and Ontario Hydro are conducting a research program to assess the environmental impact and safety of the concept of disposal of nuclear fuel waste in an underground vault in plutonic rock of the Canadian Shield. The Vault Sealing Program, one of the components of the Nuclear Fuel Waste Management Program, is concerned with the development of materials specifications and emplacement procedures for backfilling the vault. Backfilling materials would surround the nuclear waste containers and fill all vault openings to minimize leaching and movement of radionuclides.

This paper presents the procedure followed to select candidate backfill materials, the integration of mathematical modelling studies and physical testing for the definition of materials specifications, and the principal elements of the recommended handling and emplacement systems.

Keywords

Backfilling California Bearing Ratio Canadian Shield Backfill Material Compact Bentonite 

Établissement des propriétés des matériaux et mise au point de techniques de mise en place du remblai dans les enceintes de stockage de déchets de combustible nucléaire

Résumé

L'Énergie Atomique du Canada Limitée et l'Ontario Hydro exécutent actuellement un programme de recherches dans le but d'évaluer la sûreté du concept d'évacuation (stockage) des déchets de combustible nucléaire dans une enceinte souterraine construite dans la roche plutonique du bouclier canadien et les conséquences pour l'environment. Le programme de scellement de l'enceinte, une des parties du Programme de gestion des déchets de combustible nucléaire, porte sur l'établissement des propriétés des matériaux et la mise au point de techniques de mise en place du remblai dans l'enceinte. Les matériaux de remblayage entoureraient les conteneurs de déchets nucléaires et combleraient toutes les ouvertures de l'enceinte pour minimiser la lixiviation et le transport des radionucléides par les eaux souterraines.

Cet article présente la technique suivie pour choisir les matériaux à retenir comme remblai, l'intégration de la modélisation et des essais physiques pour définir les propriétés des matériaux ainsi que les éléments principaux des systèmes de manutention et mise en place recommandés.

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Copyright information

© International Assocaition of Engineering eology 1987

Authors and Affiliations

  • Lopez R. S. 
    • 1
  • Yong R. N. 
    • 2
  • Boonsinsuk P. 
    • 2
  • Card E. C. 
    • 3
  • White P. 
    • 4
  1. 1.Atomic Energy of Canada Limited Research CompanyPinawaCanada
  2. 2.Geotechnical Research CentreMcGill UniversityMontrealCanada
  3. 3.W.L. Wardrop and Associates Ltd.WinnipegCanada
  4. 4.Canadian Mine Services Ltd.BramptonCanada

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