EMERGENCY REACTOR CORE COOLING SYSTEM AND NUCLEAR REACTOR FACILITIES PROVIDED WITH THE SAME

PROBLEM TO BE SOLVED: To secure power supply required for continuously executing a grasp of plant status and operation of a passive cooling system and cooling a reactor core for a long period of time at the time of occurrence of abnormality of a nuclear plant.SOLUTION: A nuclear reactor facility comprises: a nuclear reactor vessel 1; a nuclear reactor containment vessel 5; an isolation-time condensate water system 10 that condenses steam from inside the nuclear reactor vessel 1 and returns drain water back to the nuclear reactor vessel 1 at the time of isolation of a nuclear reactor; and an accident-time power feeding system 100 that collects a part of decay heat after an accident and feeds power to an emergency power supply load. The isolation-time condensate water system 10 includes: a condenser cooling pool 17; a nuclear reactor isolation-time condenser 11; condenser inlet piping 12 for guiding the steam from the nuclear reactor vessel 1 to the nuclear reactor isolation-time condenser 11; and a condenser outlet piping 14 for guiding the drain water from the nuclear reactor isolation-time condenser 11 to the nuclear reactor vessel 1. The accident-time power feeding system 100 includes: an evaporator 101; an emergency power generation system for performing power generation by a heating medium; and an emergency power distribution device 107.