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|Title:||Germany – Fuel rod fracture behaviour studies|
|Authors:||RONDINELLA Vincenzo; WISS Thierry; PAPAIOANNOU Dimitrios; NASYROW Ramil|
|Type:||Articles in periodicals and books|
|Abstract:||The proposed activity consists of a review and synthesis of available knowledge gathered in experimental studies carried out in ITU on the assessment of the structural integrity and behaviour of the spent fuel rod system during storage and its response to accidental conditions associated e.g. with accidents during handling or transportation. This task includes the review and synthesis of previous work performed in ITU on the microstructural and macroscopic properties evolution of irradiated fuel under the cumulative effect of (alpha) decay damage during storage, covering various compounds of relevance (ranging from alpha-doped UO2 and other ceramic waste forms to natural analogue with high accumulated decay dose to spent fuel with different specific activity –UO2, MOX, etc.-). Also included is the assessment of vulnerability of nuclear fuel rods to failure, fragmentation and radionuclides release in an impact accident (a key safety concern and regulatory issue). This was studied by performing impact rupture tests on spent fuel rodlets from PWR and BWR, covering a range of burnup conditions.|
|JRC Directorate:||Nuclear Safety and Security|
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