Peak dose at Yucca Mt. long before 1-million years, NRC says

Washington DC (Platts)--13Dec2005

The peak radiation dose from a repository at Yucca Mountain, Nev.
could occur 125,000 to 150,000 years after the underground disposal facility
is closed, Tim McCartin of the US Nuclear Regulatory Commission said today.
McCartin, who was briefing the Advisory Committee on Nuclear Waste on NRC's
proposed repository licensing regulation, acknowledged it would make sense for
the regulation to contain a 200,000-year regulatory period but added that
analyses would have to go out 1-million years in order to be certain a higher
release would not occur later. The NRC proposal, like the Environmental
Protection Agency's proposed radiation protection standard it reflects, has a
regulatory period of 1-million years. Most waste packages would fail 60,000 to
80,000 years after being emplaced in Yucca Mountain, McCartin said.

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