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Science Terms Definitions - Y


The energy released by a nuclear explosion.

Yucca Mountain

Located in Nevada, Yucca Mountain is being characterized as a potential geologic repository for High Level Waste, Spent Nuclear Fuel, and possibly for waste that is defined as Greater-than-Class-C (GTCC). A key element of permanent disposal is that it must be able to isolate highly radioactive waste for thousands of years because its radioactivity can harm people and the environment. According to the 1992 Energy Policy Act, EPA is to set generally applicable standards based upon public health and safety standards and be consistent with the findings and recommendations of the National Academy of Sciences for the protection of the public from releases from radioactive materials stored or disposed of in the repository at the Yucca Mountain site.

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