Starts 2 Nov 2021
Ends 29 Nov 2021
Central European Time
Online -
Online
Strada Costiera, 11 I - 34151 Trieste (Italy)
An ICTP-IAEA Virtual Meeting

Radioactive waste requires immobilization to meet the waste acceptance criteria (WAC) for storage and disposal. To confirm that the final waste package, including waste form, fulfils all the specified requirements as stated in the relevant waste acceptance criteria to ensure long-term durability, waste package performance testing is critical to confirm compliance.

Nuclear energy is a reliable solution to the finite energy supply and climate change issues of fossil fuels. All Member States (MSs) that benefit from the peaceful uses of nuclear energy have radioactive waste that must be managed in a way that it does not present a burden to future generations. Thus, long-term durability of waste packages is a key parameter to ensure a high degree of safety during storage, transportation and disposal.

The most practical approach to obtain a better understanding of the durability of waste packages earmarked for disposal is to focus on performance testing of the wasteform itself, its compatibility with the waste container, and the influence of proposed geochemical disposal conditions. Since the wasteform is considered the primary barrier for radionuclide release, the focus is on wasteform properties. This is particularly the case for novel waste forms devised to improve the encapsulation of waste streams, where performance testing is necessary to approximate long term lifetimes.  

While it is recognised that short-term waste package performance testing does not accurately define long-term durability, waste package performance testing results provide a first indication of relative waste package performance and are therefore included in many repository waste acceptance criteria.

Topics

Specific topical areas within the scope of this workshop includes:
 
  • In dept description of international waste form quality control protocols with illustrated examples(for instance water content, penetration, viscosity, leaching test, differential  thermal analysis (DTA), flammability, radiolysis and radiation durability).
  • In dept description of international waste container quality controls with illustrated examples (for instance mechanical tests, corrosion and  radiation resistance properties).
  • International protocols regarding long-term durability determination of total waste package (for instance leaching, mechanical strength, transportation requirements, radiation durability and geochemical durability).
  • Waste form-waste container compatibility.
  • New testing protocol developments.

Registration: There is no registration fee.
**DEADLINE: 28/10/2021**

Organizers

Willie Meyer (IAEA), Joseph Ryan (PNNL (US)), Daniel Gregg (ANSTO (Australia)), Local Organiser: Nicola Seriani

Co-sponsors