GENERAL KNOWLEDGE

Detailed explanation-1: -A preventative solution developed in new plants is In-Vessel Melt Retention (IVMR), which intends to stop the progression of a meltdown by automatically flooding the reactor pit with water if the system detects a rising temperature in the core, reducing the risk of human oversight.

Detailed explanation-2: -A nuclear meltdown (core meltdown, core melt accident, meltdown or partial core melt) is a severe nuclear reactor accident that results in core damage from overheating. The term nuclear meltdown is not officially defined by the International Atomic Energy Agency or by the United States Nuclear Regulatory Commission.

Detailed explanation-3: -The term “nuclear meltdown” is commonly used by the public and by news media, but nuclear engineers usually refer to it as a core melt accident. A nuclear meltdown occurs when the middle portion of the nuclear reactor containing the fuel rods (its “core") is not properly cooled.

Detailed explanation-4: -In order to safely handle the enormous amounts of heat produced by nuclear fission, these power plants rely on a cooling system. As water is a great way to cool down a reactor, many plants are located along rivers and coasts where water is plentiful and free.