IEC 61502-ed.1.0

Annotation of standard text IEC 61502-ed.1.0 :

Applies to systems used for monitoring the vibratory behaviour of the internal structures of pressurized water reactors (core barrel, thermal shield, upper and lower core support, etc.) and fuel assemblies on the basis of neutron fluctuations observed outside the vessel and vessel vibrations. The main objective of monitoring is to detect degradation of internal structures. Sapplique aux systemes utilises pour surveiller le comportement vibratoire des structures internes des reacteurs a eau pressurisee (panier de coeur, ecran thermique, supports de coeur superieurs et inferieurs, etc.) et les assemblages combustibles, sur la base des fluctuations neutroniques observees a lexterieur de la cuve et des vibrations de la cuve. Lobjectif principal de la surveillance est de detecter des degradations des structures internes.