IN-CORE CONTROL AND PROTECTION SYSTEM OF REACTOR CORE OF WATER-TO-WATER POWER REACTOR Russian patent published in 2011 - IPC G21C17/02 

FIELD: power industry.

SUBSTANCE: in-core control and protection system of reactor zone of WWPR includes direct charging detectors (DCD) and thermoelectric converters (TEC), which are combined into assemblies of in-core detectors (AICD), information-measuring devices (IMD). AICD are arranged in reactor core so that near each fuel assembly in the area not exceeding three cross dimensions of fuel cluster there are three to six AICD. Information-measuring devices have measuring accuracy of signals of AICD detectors, which does not exceed 0.05%. Information-measuring devices have the possibility of correcting the DCD received signals. Number of racks of information-measuring devices corresponds to the number of channels of reactor protection system. DCD include neutron flux detectors, thermoelectric converters (TEC) and temperature detectors.

EFFECT: invention allows providing the protection of nuclear reactor core in compliance with normative documents.