2nd International Summer School
on Nuclear Glass Wasteform:
Structure, Properties and Long-Term Behavior Wasteform

September 23 to 27, 2013 in the site of Pont du Gard (France)


Vitrification: general aspects

Fission products (FP) account for only 5 wt% of spent nuclear fuel but represent about 98% of its radioactivity. The recovery for possible reuse of 95% of the energy-producing content of spent fuel (uranium and plutonium) is the main rationale for treatment and recycling, particularly in tomorrow’s fast reactors. The fission products and a small fraction of minor actinides, on the other hand, are and will remain the ultimate wasteforms of nuclear energy.
Vitrification is currently the only technique in the world capable of ensuring safe confinement of FP solutions that has been validated at industrial scale. Vitrification is therefore essential for the treatment and recycling of spent fuel. International experience confirms that no nuclear regulatory authority will allow the continuation of reprocessing if safe confinement of the resulting FP solutions is not operational.
Moreover, although vitrification has mainly focused on fission product solutions during the last thirty years, its field of application will undoubtedly be extended over the next thirty years to long-lived intermediate-level waste intended for geological disposal.
Waste incineration and vitrification (for example coupled with a plasma torch) can be used for organic liquids and solids, as well as mixed waste, with a significant volume reduction by confining the ashes in an extremely durable inorganic (glass or glass-ceramic) matrix.
Vitrification is and will remain a key technology for sustainable nuclear energy. The first session will provide an overview of its development in the principal countries that have adopted this approach.

Proceeding, important dates

Deadline for submission

icon calendarDecember 20th 2013

Paper review feedback deadline

icon calendarFebruary 15th 2014

Final version

icon calendarMarch 15th 2014

Sumglass Gallery


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