scholarly journals Concepts involved in a proposed application of uncertainty analysis to the performance assessment of high-level nuclear waste isolation systems

1986 ◽  
Author(s):  
R. E. Maerker
Keyword(s):  
Uncertainty Analysis ◽  
Performance Assessment ◽  
Nuclear Waste ◽  
High Level Nuclear Waste ◽  
Isolation Systems ◽  
High Level

Performance Assessments of Geologic Repositories for High-Level Nuclear Waste: Are They Necessary or Sufficient?

2004 ◽  
Vol 824 ◽  
Author(s):  
Rodney C. Ewing
Keyword(s):  
Performance Assessment ◽  
Nuclear Waste ◽  
System Analysis ◽  
Regulatory Compliance ◽  
Performance Assessments ◽  
Data Uncertainty ◽  
Emergent Properties ◽  
Total System ◽  
High Level Nuclear Waste ◽  
High Level

AbstractPerformance assessments of geologic repositories for high-level nuclear waste will be used to determine regulatory compliance. The determination, that with a “reasonable expectation” regulatory limits are met, is based on the presumption that all of the relevant physical, chemical and biological processes have been modeled with enough accuracy to insure that a confident judgment of safety may be made. For the geologic disposal of high-level nuclear waste, this generally means that models must be capable of calculating radiation exposures to a specified population at distances of tens of kilometers for periods of tens to hundreds of thousands of years. A total system performance assessment will consist of a series of cascading models that are meant in toto to capture repository performance. There are numerous sources of uncertainty in these models: scenario uncertainty, conceptual model uncertainty and data uncertainty. These uncertainties will propagate through the analysis, and the uncertainty in the total system analysis must necessarily increase with time. For the highly-coupled, non-linear systems that are characteristic of many of the physical and chemical processes, one may anticipate emergent properties that cannot, in fact, be predicted. For all of these reasons, a performance assessment is not in and of itself a sufficient basis for determining the safety of a repository, but it remains a necessary part of the effort to develop a substantive understanding of a repository site.

Application of Interaction Matrices in Performance Assessment - the Fuel Matrix as an Example

1996 ◽  
Vol 465 ◽  
Author(s):  
Patrik Sellin ◽  
Jordi Bruno ◽  
Ester Cera
Keyword(s):  
Performance Assessment ◽  
Nuclear Waste ◽  
Safety Analysis ◽  
Interaction Matrix ◽  
Spent Fuel ◽  
Process System ◽  
High Level Nuclear Waste ◽  
High Level ◽  
Interaction Matrices

ABSTRACTIn a safety analysis of a repository for high level nuclear waste, it is of primary importance to identify and document all processes that are acting on the repository system. An interaction matrix methodology have been applied to the spent fuel subsystem. The purpose of this application is to identify, structure and rank the Process System and to discuss how the identified processes can be treated.

Transmutation of high-level nuclear waste by means of accelerator driven system

2013 ◽  
Vol 3 (1) ◽  
pp. 60-69 ◽  
Author(s):  
Hamid Aït Abderrahim ◽  
Didier De Bruyn ◽  
Gert Van den Eynde ◽  
Sidney Michiels
Keyword(s):  
Nuclear Waste ◽  
Driven System ◽  
High Level Nuclear Waste ◽  
Accelerator Driven System ◽  
High Level
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