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
Removing fossil fuel subsidies will not reduce CO2 emissions as much as hoped
08.02.2018 | International Institute for Applied Systems Analysis (IIASA)
The disappearance of common species
01.02.2018 | Technical University of Munich (TUM)
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
Let’s say the armrest is broken in your vintage car. As things stand, you would need a lot of luck and persistence to find the right spare part. But in the world of Industrie 4.0 and production with batch sizes of one, you can simply scan the armrest and print it out. This is made possible by the first ever 3D scanner capable of working autonomously and in real time. The autonomous scanning system will be on display at the Hannover Messe Preview on February 6 and at the Hannover Messe proper from April 23 to 27, 2018 (Hall 6, Booth A30).
Part of the charm of vintage cars is that they stopped making them long ago, so it is special when you do see one out on the roads. If something breaks or...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
16.02.2018 | Information Technology
16.02.2018 | Health and Medicine
16.02.2018 | Physics and Astronomy