The Technical Research Centre of Finland, VTT has developed a low-temperature plasma burning process for controlled and safe incineration of water purification resin used in the primary circuit of nuclear power plants. Storing radioactive waste in the form of ash takes less space and is easier to manage. VTT and its partners have signed an agreement to build a half-scale plasma burning process pilot.
Resin is used for purification of primary circuit water of nuclear power plants, which makes the resin radioactive. The level of its radioactivity does not decrease in incineration, but the volume of the radioactive waste will decrease to at least a tenth of its original volume reducing considerably the storage and final disposal costs for the nuclear power plant. Resin is an organic product and radiation induces gas generation in it, which may be problematic in long-term storage and in final disposal.
Plasma burning enables controlled and safe incineration of radioactive resin. The resin is incinerated in a subatmospheric pressure in a chamber, which enables the maintenance of sufficiently low temperatures. The radioactive ash resulting from the incineration is chemically more stable than resin and radiation does not generate gas in ash. The ash can, for instance, be solidified in concrete which will make the final waste product safe for storage.
Irene Hernberg | alfa
Despite government claims, orangutan populations have not increased. Call for better monitoring
06.11.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Increasing frequency of ocean storms could alter kelp forest ecosystems
30.10.2018 | University of Virginia
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
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Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
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Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
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16.11.2018 | Life Sciences
16.11.2018 | Life Sciences