DOE/EIS-0283-S2: NNSA Supplement Analysis (January 2021)

NNSA Supplement Analysis for the Disposition of Fast Critical Assembly Plutonium (January 2021)

The National Nuclear Security Administration (NNSA) prepared Supplement Analysis for the Disposition of Fast Critical Assembly Plutonium (DOE/EIS-0283-S2-SA-02) for a proposed change in the disposition method for up to 350 kilograms of stainless-steel clad plutonium from Japan’s Fast Critical Assembly (FCA) reactor. Instead of using the Waste Isolation Pilot Plant analyzed in Surplus Plutonium Disposition Supplemental EIS (DOE/EIS-0283-S2, 2015), NNSA proposes to use the H-Canyon/HB-Line to Defense Waste Processing Facility (DWPF) Alternative. Based on the Supplement Analysis, NNSA determined that there are no substantial difference in environmental impacts and that no additional NEPA review is required to dispose of FCA fuel via electrolytic dissolution in H-Canyon, subsequent immobilization at DWPF, and storage at the Glass Waste Storage Building pending shipment to a geologic repository.

For more information, see DOE/EIS-0283-S2: Surplus Plutonium Disposition Supplemental Environmental Impact Statement.