Flowsheets of the Flamanville EPR

The results presented in this case study derive from detailed data provided by EDF to the French Nuclear Safety Authority (ASN) in support of the commissioning authorization for the Flamanville EPR power plant.

Although highly insightful, this dataset introduces several complexities, as it is subject to various interpretations. Specifically, strictly adhering to the diagram values appears to underestimate the generated power in some instances. Attempting to reconcile these power values—while holding parameters like feedwater temperature constant—requires adjusting the polytropic expansion efficiency as well as the extraction rates.

In the flowsheets provided below, the former option was chosen. As a result, the power values differ slightly from the official figures.

Flamanville 3 EPR 100 %

Flamanville 3 EPR 90 %

Flamanville 3 EPR 70 %

Flamanville 3 EPR 50 %

Flamanville 3 EPR 30 %