Automated burnup sequence

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Generating group constants for a fuel cycle simulator calculation requires covering all operating conditions within the reactor core throughout the simulated cycle, such as fuel temperature, coolant void fraction (BWR) and the concentration of soluble absorber (PWR). The group constant data is parametrized according to discrete state-points, from which the core simulator interpolates the values corresponding to burnup and thermal hydraulic state. Since the local operating conditions inside a fuel assembly also affect how the assembly is depleted, the state-points by which the group constant data is parametrized are not completely independent. The calculations are instead divided into: