Alternatives for High-Level Waste Salt Processing at the Savannah River Site (2000) / Chapter Skim
Currently Skimming:
Barriers to Implementation of HLW Salt Processing Options
Barriers to Implementation of HLW Salt Processing Options
Pages 81-87
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 81... ...
recognized the importance of systems engineering to the success of the salt processing program when it asked the committee to comment on systems integration in this third charge. Given the abbreviated schedule for this project, the committee did not have an opportunity to perform a detailed analysis of the HEW system at SRS or the potential for integration of the candidate processing options into that system.
|
From page 82... ...
The committee did see some evidence that systems engineering approaches are being used at SRS for example, SRS is considering the potential impacts of waste stream feeds to the Defense Waste Processing Facility (DWPF) in its evaluation of processing options.
|
From page 83... ...
FIGURE S.3 Histogram showing the variation of cesium-137 activity in so~uble radionuclides in the high-level waste tanks at Savannah River. SOURCE: Data from Fowler (2000~; see Table 1.2 of this report.
|
From page 84... ...
As noted previously, the MST processing step might be skipped altogether for tank wastes with low strontium and cesium concentrations. Recommendation: SRS should implement a more fully integratecl systems engineering approach for processing HEW salt solu2 Dilution of the supernate during salt processing operations could further reduce the radionuclide concentrations shown in Table 1.2, thereby allowing more tank waste to be sent to the saltstone facility without the need for extensive radionuclide separations.
|
From page 85... ...
tailoring the processing operations to tank waste contents, with the goal of reducing processing time and costs and freeing up tank space, and (2) changing the order of processing to remove radionuclides from the HEW salt solutions, with the goal of reducing processing hazards, costs, and time.
|
From page 86... ...
The challenge is to manage the R&D program, hot and cold demonstration testing, pilot plant operation, and process selection and implementation in ways that minimize total costs without incurring unacceptable risks, either safety or fiscal. The successful implementation of a processing option will require strong and technically informed management of the HEW salt processing program.
|
From page 87... ...
This team should be charged with assuring that R&D and analysis of the alternate processing options are carried out as long as needed to reduce risk to an acceptable level but no longer. The team shoulcl clecide when enough information is available to allow selection or exclusion of any process, what demonstrations hot or cold- should be conducted, what pilot plants are needed, and if so, when.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.