ISO 27468:2011

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ISO 27468:2011 is an international standard that specifies a methodology for evaluating nuclear criticality safety in systems containing PWR UOX fuels, using a bounding burnup credit approach. It outlines parameters, requirements, and precautions for these evaluations, particularly when considering the benefits of burnup (the reduction in fissile material content due to nuclear reactions). This standard is crucial for ensuring the safe handling and storage of nuclear fuel, especially during the later stages of its usage.