Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Preliminary Technology Maturation Plan for Immobilization of High-level Waste in Glass Ceramics
Author: Preliminary Assessment of Candidate Immobilization Technologies for Retrieved Single-shell Tank Wastes
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 75
Book Description
This report describes the initial work that has been performed to select technologies for immobilization of wastes that may be retrieved from Hanford single-shell tanks (SSTs). Two classes of waste will require immobilization. One is the combined high-level waste/transuranic (HLW/TRU) fraction, the other the low-level waste (LLW) fraction. A number of potential immobilization technologies are identified for each class of waste. Immobilization technologies were initially selected based on a number of considerations, including (1) the waste loading that could likely be achieved within the constraint of producing acceptable waste forms, (2) process flexibility (primarily compatibility with anticipated waste variability), (3) process complexity, and (4) state of development. Immobilization technologies selected for further development include the following: for HLW/TRU waste -- borosilicate glass, lead-iron phosphate glass, glass-calcine composites, glass-ceramics, and cement based forms; for non-denitrated LLW -- grout, laxtex-modified concrete, and polyethylene; and for denitrated LLW -- silicate glass, phosphate glass, and clay calcination or tailored ceramic in various matrices.
Long-term High-level Waste Technology Program
Author: Publisher:
ISBN:
Category : Radioactive waste disposal
Languages : en
Pages : 100
Book Description
Ceramic Process and Plant Design for High-level Nuclear Waste Immobilization
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In the last 3 years, significant advances in ceramic technology for high-level nuclear waste solidification have been made. Product quality in terms of leach-resistance, compositional uniformity, structural integrity, and thermal stability promises to be superior to borosilicate glass. This paper addresses the process effectiveness and preliminary designs for glass and ceramic immobilization plants. The reference two-step ceramic process utilizes fluid-bed calcination (FBC) and hot isostatic press (HIP) consolidation. Full-scale demonstration of these well-developed processing steps has been established at DOE and/or commercial facilities for processing radioactive materials. Based on Savannah River-type waste, our model predicts that the capital and operating cost for the solidification of high-level nuclear waste is about the same for the ceramic and glass options. However, when repository costs are included, the ceramic option potentially offers significantly better economics due to its high waste loading and volume reduction. Volume reduction impacts several figures of merit in addition to cost such as system logistics, storage, transportation, and risk. The study concludes that the ceramic product/process has many potential advantages, and rapid deployment of the technology could be realized due to full-scale demonstrations of FBC and HIP technology in radioactive environments. Based on our finding and those of others, the ceramic innovation not only offers a viable backup to the glass reference process but promises to be a viable future option for new high-level nuclear waste management opportunities.
Energy Research Abstracts
Author: Scientific and Technical Aerospace Reports
Author: Supplemental Immobilization Cast Stone Technology Development and Waste Form Qualification Testing Plan
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Hanford Tank Waste Treatment and Immobilization Plant (WTP) is being constructed to treat the 56 million gallons of radioactive waste stored in 177 underground tanks at the Hanford Site. The WTP includes a pretreatment facility to separate the wastes into high-level waste (HLW) and low-activity waste (LAW) fractions for vitrification and disposal. The LAW will be converted to glass for final disposal at the Integrated Disposal Facility (IDF). The pretreatment facility will have the capacity to separate all of the tank wastes into the HLW and LAW fractions, and the HLW Vitrification Facility will have the capacity to vitrify all of the HLW. However, a second immobilization facility will be needed for the expected volume of LAW requiring immobilization. A number of alternatives, including Cast Stone--a cementitious waste form--are being considered to provide the additional LAW immobilization capacity.
ICPP Waste Management Technology Development Program
Author: Publisher:
ISBN:
Category : Radioactive waste disposal
Languages : en
Pages : 24
Book Description
Radioactive Waste Processing and Disposal
Author: U.S. Nuclear Regulatory CommissionPublisher:
ISBN:
Category : Radioactive waste disposal
Languages : en
Pages : 908
Book Description
Author: