Neutronics characterization of an erbia fully poisoned PWR assembly by means of the APOLLO2 code

Open Access

Table 11

Fuel temperature coefficient.

Configuration	Phase	T_fuel [°C]	ΔT	k_inf [pcm]	α_Dop [pcm/°C] @ BU=0
²³⁵U = 10.27 wt.% and Er = 1 at.%	Initial	540	10	1.323998	−1.809
	Final	550	10	1.323681	−1.809
	Initial	540	20	1.323998	−1.812
	Final	560	20	1.323363	−1.812
	Initial	540	50	1.323998	−1.867
	Final	590	50	1.322364	−1.867
	Initial	540	−10	1.323998	2.264
	Final	530	−10	1.324395	2.264
	Initial	540	−20	1.323998	2.061
	Final	520	−20	1.324721	2.061
	Initial	540	−50	1.323998	1.925
	Final	490	−50	1.325687	1.925


²³⁵U = 5 wt.% and Er = 0 at.%	Initial	540	50	1.324021	−1.864
	Final	590	50	1.322389	−1.864
	Initial	540	−10	1.324021	1.853
	Final	530	−10	1.324346	1.853
	Initial	540	−50	1.324021	1.939
	Final	490	−50	1.325723	1.939


²³⁵U = 10.27 wt.% and Er = 0 at.%	Initial	540	50	1.451792	−1.637
	Final	590	50	1.450069	−1.637
	Initial	540	−50	1.451792	1.717
	Final	490	−50	1.453604	1.717

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