What Role for Performance Assessment?
Performance Assessment (PA) is the primary and, perhaps, the only real issue in determining regulatory compliance for the proposed Yucca Mountain nuclear waste repository in the U.S. Experience has revealed both the strengths and weaknesses of PA. The main point of this paper is that while PA is necessary, by itself, it is not sufficient. Although this caveat is recognised, it is not always given sufficient attention. Presenting and evaluating the assumptions, models, and data that underlie PA results are of paramount importance. PA should be only one part of a safety case that also includes consideration of simplified calculations, multiple barriers, and the use of natural analogues.
KeywordsPerformance Assessment Nuclear Waste Natural Analogue Nuclear Regulatory Commission Multiple Barrier
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