Increasing the burnup limits for economic reasons and preferring MOX for the possibility of recycling spent material are among the two main reasons that lead to a greater production of helium in fuel and a consequent higher fission gas release in nuclear fuel. These are a major concern for the performance of the fuel rods in operation but also their safe management during disposal to avoid any potential radioactive release to the environment. Generally, these classes of problems could be handled through progressively more comprehensive and predictive models. However, these require an increased understanding of the physical properties and transport mechanisms for helium behaviour in nuclear fuels and materials. For this, helium has been infused in glasses used for the vitrification of radioactive waste, paving the way for further investigation in materials considered for nuclear waste disposal, besides nuclear fuel.

Helium Infusion In Nuclear Materials

L. Cognini;
2021

Abstract

Increasing the burnup limits for economic reasons and preferring MOX for the possibility of recycling spent material are among the two main reasons that lead to a greater production of helium in fuel and a consequent higher fission gas release in nuclear fuel. These are a major concern for the performance of the fuel rods in operation but also their safe management during disposal to avoid any potential radioactive release to the environment. Generally, these classes of problems could be handled through progressively more comprehensive and predictive models. However, these require an increased understanding of the physical properties and transport mechanisms for helium behaviour in nuclear fuels and materials. For this, helium has been infused in glasses used for the vitrification of radioactive waste, paving the way for further investigation in materials considered for nuclear waste disposal, besides nuclear fuel.
Proceedings of the International Conference Nuclear Energy for New Europe, Bled, Slovenia, September 6-9, 2021
9789616207515
File in questo prodotto:
File Dimensione Formato  
Cognini_Wiss_NENE2021.pdf

accesso aperto

: Publisher’s version
Dimensione 2.28 MB
Formato Adobe PDF
2.28 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/1203079
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact