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Evaluation of West Valley High-Level Waste Tank Lay-Up Strategies.

DE2004832981

Publication Date	2004
Personal Author	McClure, L. W.; Henderson, J. C.; Elmore, M. R.
Page Count	22
Abstract	The primary objective of the task summarized in this paper was to demonstrate a methodology for evaluating alternative strategies for preclosure lay-up of the two high-level waste (HLW) storage tanks at the West Valley Demonstration Project (WVDP). Lay-up is defined as the period between operational use of tanks for waste storage and final closure. The U.S. Department of Energy (DOE) is planning to separate the environmental impact statement (EIS) for completion of closure of the WVDP into two separate EISs. The first EIS will cover only waste management and decontamination. DOE expects to complete this EIS in about 18 months. The second EIS will cover final decommissioning and closure and may take up to five years to complete. This approach has been proposed to expedite continued management of the waste and decontamination activities in advance of the final EIS and its associated Record of Decision on final site closure. Final closure of the WVDP site may take 10 to 15 years; therefore, the tanks need to be placed in a safe, stable condition with minimum surveillance during an extended lay-up period. The methodology developed for ranking the potential strategies for lay-up of the WVDP tanks can be used to provide a basis for a decision on the preferred path forward. The methodology is also applicable to determining preferred lay-up approaches at other DOE sites. Some of the alternative strategies identified for the WVDP should also be considered for implementation at the other DOE sites. Each site has unique characteristics that would require unique considerations for lay-up.
Keywords	High-level radioactive wastes Waste storage Waste management Closures Evaluation Methodology Decommissioning Decontamination Environmental impact statements Radioactive waste processing
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Jacobs Engineering Group, Inc., Richland, WA.; Department of Energy, Washington, DC.; Pacific Northwest National Lab., Richland, WA.
Supplemental Notes	Prepared in cooperation with Pacific Northwest National Lab., Richland, WA. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200513

Evaluation of West Valley High-Level Waste Tank Lay-Up Strategies.

Evaluation of West Valley High-Level Waste Tank Lay-Up Strategies.
DE2004832981

Publication Date	2004
Personal Author	McClure, L. W.; Henderson, J. C.; Elmore, M. R.
Page Count	22
Abstract	The primary objective of the task summarized in this paper was to demonstrate a methodology for evaluating alternative strategies for preclosure lay-up of the two high-level waste (HLW) storage tanks at the West Valley Demonstration Project (WVDP). Lay-up is defined as the period between operational use of tanks for waste storage and final closure. The U.S. Department of Energy (DOE) is planning to separate the environmental impact statement (EIS) for completion of closure of the WVDP into two separate EISs. The first EIS will cover only waste management and decontamination. DOE expects to complete this EIS in about 18 months. The second EIS will cover final decommissioning and closure and may take up to five years to complete. This approach has been proposed to expedite continued management of the waste and decontamination activities in advance of the final EIS and its associated Record of Decision on final site closure. Final closure of the WVDP site may take 10 to 15 years; therefore, the tanks need to be placed in a safe, stable condition with minimum surveillance during an extended lay-up period. The methodology developed for ranking the potential strategies for lay-up of the WVDP tanks can be used to provide a basis for a decision on the preferred path forward. The methodology is also applicable to determining preferred lay-up approaches at other DOE sites. Some of the alternative strategies identified for the WVDP should also be considered for implementation at the other DOE sites. Each site has unique characteristics that would require unique considerations for lay-up.
Keywords	High-level radioactive wastes Waste storage Waste management Closures Evaluation Methodology Decommissioning Decontamination Environmental impact statements Radioactive waste processing
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Jacobs Engineering Group, Inc., Richland, WA.; Department of Energy, Washington, DC.; Pacific Northwest National Lab., Richland, WA.
Supplemental Notes	Prepared in cooperation with Pacific Northwest National Lab., Richland, WA. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200513