Bias estimation for irradiated assembly reactivity decrement and burnup

Open Access

Table 1.

Calculated average reactivity decrement biases based on PWR Hot Full Power. Values are given in pcm. Burnup values represent the center of the bins, with a width of 10 MWd/kg. See text for the definition of mixed cycles.

Burnup (MWd/kg)	10	20	30	40	50	60
UO₂ Reference [12]	19	46	81	125	177	238
UO₂ Reference [13]	66	101	106	80	22	−64
This work: UO₂ (from mixed cycles)	77	−27	−79	115	342	601
This work: MOX (from mixed cycles)	−15	−105	−4	86	72	–

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