ULTRASONIC MONITORING SYSTEM OF THE NUCLEAR REACTOR ABOVE CORE SPACE

摘要

System for detecting, in a space being monitored, for example a gap, obstacles to rotation of the rotating plugs during refueling operations. The system includes an ultrasound reflector configured in the form of a ring on which at least one row of vertical cylindrical rods is arranged. The ring is attached to one of the thermal screens surrounding the reactor core, preferably one proximate to the nuclear reactor vessel. The spacing at which the cylindrical rods are arranged in the row is less than the spacing between the assemblies.