Flamanville EPR RPV's heads carbon segregation: tests program definition to characterize the mechanical properties of the carbon segregation

Stéphane Marie, Jérôme Demarecaux, Philippe Fichot, Elisabeth Keim, Johannes May, Peter Birkett, Marlies Lambrecht, Rachid Chaouadi, Mejido Hajjaj, Cecile Miller

Research outputpeer-review


To characterize the mechanical properties of the residual carbon segregation of the Flamanville EPR RPV heads, a testing program have been organized by
Framatome and performed in 3 laboratories (Wood, Framatome technical center of Erlangen and SCK Mol). This paper presents the tests program, how it has been defined and its goals. The main issue was the impact of the carbon content on the toughness properties. A procedure was defined to characterize specifically the toughness distribution in the upper part of the brittle-toductile transition. The ductile regime was also investigated. These tests were completed with tensile,
Charpy and drop weight tests, representing a final total of approximatively 1700 mechanical tests.
Original languageEnglish
Title of host publicationProceedings of the ASME 2018 - Pressure vessels and piping conference
Place of PublicationPrague, Czez Republic
Number of pages8
StatePublished - 2 Sep 2019

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