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Energia i regulacje · 25.01.2002

Specification of a Probability for Unlikely Features, Events and Processes

The Nuclear Regulatory Commission (NRC) is proposing to amend its regulations governing the disposal of high-level radioactive wastes in a potential geologic repository at Yucca Mountain, Nevada, to define the term "unlikely" in quantitative terms. That is, it would be defined as a range of numerical values for use in determining whether a feature, event, or process (FEP) or sequence of events and processes should be excluded from certain required assessments. The NRC is proposing this amendment to clarify how it plans to implement two of the final environmental standards for Yucca Mountain issued by the U.S. Environmental Protection Agency (EPA). Specifically, EPA's final standards require the exclusion of "unlikely" FEPs, or sequences of events and processes, from the required assessments for the human intrusion and ground-water protection standards. In accordance with the Energy Policy Act of 1992, the NRC has adopted EPA's final standards in its recently published technical requirements for a potential geologic repository at Yucca Mountain.

Source: Federal Register — Nuclear Regulatory CommissionOpen original release →