Reduced order stress model for online maneuvering,...

Details Reduced order stress model for online maneuvering,... Reduced order stress model for online maneuvering,...

G - Physics

21

C

G21C 7/36 (2006.01) G21C 7/00 (2006.01)

Patent

CA 2738708

The invention is principally directed to a reduced order model, XEDOR, facilitating the prediction of and the diagnostics of pellet-clad interaction stress- corrosion-cracking failure of nuclear fuel rods. The invention more particularly relates to assessment of susceptibility to PCI failure for guidance in the design of fuel loading in nuclear reactors. The invention additionally relates to the protection against PCI failure by providing operational information to operators of a nuclear reactor during power maneuvering, including predictive calculations prior to executing power maneuvers. Additionally, the invention relates to the diagnostics of an event suggesting a possible PCI cladding failure.

L'invention porte principalement sur un modèle à ordre réduit, XEDOR, facilitant la prévision et le diagnostic d'une rupture d'interaction pastille-gaine (PCI), par fissuration-corrosion-contrainte, de barres de combustible nucléaire. L'invention porte particulièrement sur l'évaluation de la susceptibilité à la rupture de PCI pour une aide à la conception de chargement de combustible dans des réacteurs nucléaires. L'invention porte également sur la protection contre la rupture de PCI par la fourniture d'informations de fonctionnement aux opérateurs d'un réacteur nucléaire pendant une manuvre de puissance, comprenant des calculs prédictifs avant l'exécution de manuvres de puissance. L'invention porte également sur le diagnostic d'un événement suggérant une possible rupture de gaine de PCI.

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