Research Reactor Aluminum Spent Fuel Treatment Options for Disposal (1998) / Chapter Skim
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5. Concluding Observations
5. Concluding Observations
Pages 94-112
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From page 94... ...
This concluding chapter offers some general observations about the overall program and how it impacts the treatment selection process, and also offers some suggestions on how DOE-Savannah River might use this knowledge to make more elective treatment selection decisions. The aluminum spent file!
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From page 95... ...
are compatible with the front and back ends, even though compatibility requirements are not well defined at present. In particular, DOE-Savannah River must select one or more treatment options for aluminum spent fuel that will meet repository waste acceptance criteria, which have yet to be finalized; design treatment and storage facilities that are sized appropriately to waste streams, which are subject to future change; and provide for interim storage of the processed waste until the repository, which is yet to be designed, licensed, or constructed, is able to accept it.
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From page 97... ...
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From page 98... ...
ends of the overall disposal program (Table 5.~. PHASED DECISION AND IMPLEMENTATION STRATEGY FOR TREATMENT OPTION SELECTION DOE-Savannah River appears to recognize the importance of a phased decision-making strategy and is already applying it to individual parts of its program.
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From page 99... ...
This inventory would include all of the allot inum spent fuel now in storage at Savannah River, all of the foreign research reactor finely the aluminum spent filet now In storage at the Idaho Engineering and Environmental Laboratory (INEEL) , and other domestic research reactor filet that will be generated and available for shipment prior to about 2015 (Figure 5.~.
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From page 103... ...
NOTE: FRR = foreign research reactor filet; DRR = domestic research reactor fuel; HEIR = High-Flux isotope Reactor filet; from INEEL = aluminum spent filet now in storage at the Idaho National Engineering and Environmental Laboratory that will be shipped to Savannah River for treatment; to INEEL = non-aluminum spent file! at Savannah River that will be shipped to INEEL for treatment; to repository = treated aluminum spent file!
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From page 104... ...
Consequently, DOESavannah River should be able to tailor its decisions on treatment options and facilities to the legacy component of the aluminum spent file! inventory, and at the same time it can obtain additional information to improve the estimates of the post-2015 inventor for a later treatment · .
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From page 105... ...
As noted in Chapter 3, some aluminum spent filet may not meet waste acceptance criteria for direct co-disposal in the repository. Also, for policy reasons, conventional reprocessing may be limited to aluminum spent Mel Rat represents heals or safety hazards, and We reprocessing facilities at Savannah River may not be available after 2002.
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From page 106... ...
during the course of this study, there does not appear to be a technical basis for rejecting conventional reprocessing as an option for treating of aluminum spent fuel from foreign and domestic research reactors. Conventional reprocessing is a proven and reliable spent fuel treatment technology based on over 300 plant-years of operation worldwide, and the necessary treatment facilities (the F and H Canyons and the Defense Waste Processing Facility [DWPF]
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From page 107... ...
Moreover, Savannah River is a weapons material secure site and watt remain so for the duration of this program. The reprocessing of aluminum spent file} also does not appear to be In conflict win Me DOE decision to phase out reprocessing at Savannah River (DOE, 1992a)
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From page 108... ...
wiR review the policy, technology, cost and schedule implications for reprocessing foreign research reactor spent nuclear filet to determine whether reprocessing offoreign research reactor spent nuclear fuel is justified for other than health and safety reasons. ~ As noted in Chapter 2, the foreign research reactor EIS (DOE, 1 996c)
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From page 109... ...
All else being equal, the high cost of time may favor the selection of melt and dilute treatment because the acceptability of a direct co-disposal waste form for some aluminum spent fuel is potentially problematical (Chapter 3~. Melt and dilute treatment will entail more handling and processing of the fuel, but the waste form characteristics can be altered to make it suitable for repository disposal and, additionally, fewer waste containers will be produced.
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From page 110... ...
DOE-Savannah River recognizes that a repository may not be available to receive the treated ~e} well Into the twenty-f~rst centary and is prudently planning for several decades of onsite interim storage. Dry interim storage has lower operating costs and requires less maintenance and servicing than wet storage, the current storage medium for unprocessed spent final.
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From page 111... ...
Decontamination and Decommissioning Even though the D&D costs of facilities built to receive, handle, treat, and store aluminum spent fuel at Savannah River will not be charged directly to the spent fired treatment component of the program, the costs will be borne ultimately by U.S. taxpayers.
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From page 112... ...
did not ask for or receive detailed briefings on this strategy during the course of the study. As part of this decision strategy, it is recommended that DOESavannah River conduct a complete systems review to identify and understand the relationships among the various components of the aluminum spent fuel disposal program shown in Table 5.1.
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