ASN gives a level 2 rating on the INES scale to a significant safety event regarding a risk of the loss of heat sink for the reactors in the Belleville-sur-Loire, Cattenom, Chinon, Cruas, Dampierre-en-Burly, Golfech, Nogent-sur-Seine, Paluel, Saint-Alban and Saint-Laurent-des-Eaux NPPs. 29 900 MWe and 1300 MWe reactors are concerned by this event.