Survey on operational experiences of NPPs in a transitioning energy system going from baseload to flexible operation

The report is based on the existing operational experience in German Pressurized Water Reactors (PWR) and Boiling Water Reactors (BWR), collected by Framatome via four interviews with high level management, knowledgeable on the FlexOp strategy. Impacts on the plant from a design, operational and organization point of view and the corresponding measures to improve the flexibility or mitigate impacts were summarized. The level of the performed flexibility and some specific features were noted as well, mostly focused on altering the active power. Nordic NPPs could benefit from this information, minimizing possible risks when such a transition is required.