Method and device for checking the dimensions and geometry of guide and positioning elements in the upper internals of a pressurized water nuclear reactor.

摘要

A plurality of metal armatures (50) is arranged facing a surface (23) of a guide on which the check is being performed, in determined circumferential positions and the capacity is measured of the capacitors consisting of the metal armatures, the surface of the guide and a layer of dielectric fluid such as air or water separating the armature from the surface of the guide. The process and the corresponding devices are applied to the dimensional and geometric checking of the bores of the guide plates and of the continuous channels of a tube for guiding a control cluster of the upper internal equipment of a nuclear reactor. The process can also be applied to the checking of interaxial distance of the guiding pins of the guide tubes of the upper internal equipment of a nuclear reactor. IMAGE