IMPROVEMENT OF SURFACE INSULATION STRUCTURES IN A NUCLEAR REACTOR, ESPECIALLY OF THE FAST NEUTRON TYPE

摘要

Improvement in thermal insulation structures for surfaces in a nuclear reactor. /P P According to the invention, use is made of heat-insulating panels held against the surface to be protected, by means of a double fixing, comprising on the one hand a tubular element passing through a bore of the panel, fixed end to the surface and threaded at its opposite end, cooperating with a first nut applying the panel against the surface by means of a support plate and, on the other hand, a stud mounted in the axis of the tubular element , also fixed to the surface and having at its opposite end a threaded head protruding from the end of the tubular element and cooperating with a second nut supporting a washer capable of stopping the fall of the tubular element and of the panel in the event of rupture of said tubular element. /P P Application to fast neutron reactors.