ASPECTS OF POSTCLOSURE SAFETY OF THE MARK II ENGINEERED BARRIER SYSTEM FOR A USED FUEL REPOSITORY
3rd Canadian Nuclear Waste Management Decommissioning and Environmental Restoration - 2016 Sept. 11-14


Presented at:
3rd Canadian Nuclear Waste Management Decommissioning and Environmental Restoration
2016 Sept. 11-14
Location:
Ottawa, Canada
Session Title:
Session W2: APM Repository Design & Safety Case

Authors:
E.P. Kremer (Nuclear Waste Management Organization)
  

Abstract

The Nuclear Waste Management Organization is responsible for the implementation of Adaptive Phased Management, the federally-approved plan for the safe long-term management of Canada’s used nuclear fuel. Under this plan, used nuclear fuel will ultimately be placed within a deep geological repository in a suitable host rock formation.

Before specific sites have been identified for detailed examination, generic studies are used to illustrate the long-term performance and safety of the multi-barrier repository system within various geological settings. The 6th and 7th Case Studies consider the postclosure safety of a repository that uses the Mark II engineered barrier system (EBS).

To be effective, the safety assessment must be robust and have an appropriate balance of model simplicity without excess conservatism. This paper considers how to approach a postclosure safety assessment of the Mark II EBS, with focus on the container failure model. Models representing the Normal Evolution Scenario are presented, including calculations and results.

Individual Conference-Paper Copies (Electronic Where Available):

  • For CNS members, the first 5 copies per calendar year are free, and additional copies are $10 each.
  • For non-members, the price is $25 for the first Conference-paper copy in a request, and $10 each for additional copies of papers in the same conference and in the same request.
  • Contact the CNS office to order reprints.