During a Loss-of-Coolant Accident (LOCA), the role of accumulator injection in the Emergency Core Cooling System (ECCS) is to rapidly provide a large volume of coolant to the reactor core in the early stages of the accident. A LOCA occurs when there is a break in the reactor's primary coolant system, leading to a rapid loss of coolant and a decrease in reactor pressure. Accumulators are large tanks filled with borated water and pressurized with nitrogen gas. They are connected to the reactor vessel via check valves. When....
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