METHOD AND SYSTEM FOR EMERGENCY AND BACK-UP COOLING OF NUCLEAR FUEL AND REACTORS Russian patent published in 2018 - IPC G21C15/18 

FIELD: nuclear physics, nuclear technology.

SUBSTANCE: invention relates to a method and system for emergency and backup cooling of nuclear fuel and nuclear reactors. System comprises a nuclear reactor chamber comprising an inlet port and at least one container containing liquid nitrogen, the at least one container comprising an outlet port, in fluid communication with said inlet port of the nuclear reactor chamber, so that liquid nitrogen can flow into the chamber from the at least one container, and a thermally activated valve connected to said inlet port and configured to control the flow of liquid nitrogen. Liquid nitrogen contained in the container can enter the chamber when ambient temperature in the chamber reaches or exceeds a threshold value. Said inlet port of the nuclear reactor chamber is located above the fuel elements of the nuclear reactor.

EFFECT: technical result is the provision of efficient, safe and fast cooling of the nuclear reactor under conditions where there is no electrical power or when the nuclear reactor and nuclear fuel are already overheated.

5 cl, 5 dwg