Nuclear Waste Vitrification Process

Waste vitrification process and for the storage of vitrified waste produced from this process.

Nuclear reactor rbmk countries used nuclear weapons. Most hlw other than spent fuel itself arises in a liquid form from the reprocessing of spent fuel. The issue of nuclear waste a key problem with nuclear power is what to do with the waste products generated when the fuel is completely spent. However in 1982 the decision was taken to implement the second generation french avh atelier de vitrification la hague process in the ukas waste vitrification plant wvp.

This is a unique commingling of wastes to utilize glass forming capabilities of one stream to stabilize other. In the vitrification process radioactive waste is mixed with a substance that will crystallize when heated eg sugar sand and then calcined. Calcination removes water from the waste to enhance the stability of the glass product.

As the world fossil fuel reserves diminish alternate energy sources will become increasingly important. On the other hand low level radioactive waste hereinafter referred to as low level waste produced at nuclear power stations reprocessing plants and the like is characterized by a wide range of radioactivity levels compositions. This type of process referred to as vitrification d has also been extended for lower level wastes where the type of waste or the economics have been appropriate.

Vitrification of nuclear waste linda thompson november 28 2010 submitted as coursework for physics 240 stanford university fall 2010. Drying and calcination which decomposes the nitrates to oxides. And reaction of oxides with glass forming addi tives and fusion to produce hlw glass.

The geomelt systems can be an in situ vitrification technology ideal for soil solid wastes and debris but also an in container vitrification technology ideal for waste streams. The vitrification process yields a stable and durable waste form. The larger avh design had a higher throughput than avm 25 vs 15 kg glass per hour and used an elliptical rather than cylindrical melter.

Provide varied fit to purpose technologies to rise to all the challenges. Atarticleosti10130159 title first principles process product models for vitrification of nuclear waste. Liquid waste stream containing the fission products and residual actinides from the spent fuel.

Vitrification is a process used to stabilize and encapsulate high level radioactive waste. This highly active liquor hal is concentrated by evaporation and stored in tanks prior to being converted into a borosilicate glass at the sellafield waste vitrification plant wvp.