FIELD: nuclear physics and equipment.
SUBSTANCE: invention relates to nuclear power engineering. Metal protection tank for cooling the caisson comprises a reactor of a steam generating plant located in the tank caisson. In the upper part the tank is equipped with two additional tanks and two branch pipes connecting the upper tanks with the lower tank, forming a single caisson, cooled by the coolant of the cooling system of the equipment of the steam generating unit, that provides the heat removal from the reactor vessel, and also four nozzles for connection to the cooling system of the equipment of the steam generating unit with the organization of natural circulation of water from the lower tank to the upper tanks.
EFFECT: invention makes it possible to increase the reliability of the cooling system of the steam generating plant equipment and the safety of the steam generating unit in normal operation and in the case of accidents involving loss of the coolant of the primary circuit.
1 cl, 1 dwg
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