A Working Definition of Scenario and a Method of Scenario Construction

by G. E. Barr, Sandia Natl Lab, Albuquerque, United States,
E. Dunn, Sandia Natl Lab, Albuquerque, United States,

Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1993


The event-tree method of scenario construction has been chosen for the Yucca Mountain performance assessment. Its applicability and suitability to the problem are discussed and compared with those of the Nuclear Regulatory Commission (NRC) method. The event-tree method is appropriate for an incompletely characterized site, where there must be an evolving understanding, over time, of the processes at work, for a site that may require analysis of details, in specific context, and when the scenario functions to guide site characterization. Anticipating the eventual requirement for using the NRC method, we show that the event-tree method can be translated to the NRC format after final scenario screening.

Subject Headings: Construction methods | Federal government | Terminology and definition | Radioactive wastes | Waste disposal | Comparative studies | Industrial wastes | Risk management

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