CARA Design Criteria for HWR Fuel Burnup Extension

FLORIDO, P.; CIRIMELLO, R.; BERGALLO, J.; MARINO A.; DELMASTRO, D.F.; BRASNAROF, D.; GONZALEZ, J.; JUANICO

Bariloche

Congreso; IAEA Technical Committee Meeting on ?Technical and Economic Limits to Fuel Burnup Extension?.; 1999

IAEA (International Atomic Energy Asociation)

A new concept for HWR fuel bundles, namely CARA, is presented. The CARA design allows to improve all the major performances in the PHWR fuel technology. Among others, it reaches higher burnup and thermohydraulic safety margins, together with lower fuel pellet temperatures and Zry/HM mass ratio. Moreover, it keeps the fuel mass content per unit length and the channel pressure drop by using a single diameter of fuel rods.