A nuclear meltdown (core meltdown, core melt accident, meltdown or partial core melt[2]) is a severe nuclear reactor accident that results in core damage from overheating.

Mar 18, 2011 · Below, check out five of the most devastating nuclear accidents in history—what caused them, how they were contained (or not) and what happened after.

Meltdown, occurrence in which a huge amount of thermal energy and radiation is released as a result of an uncontrolled chain reaction in a nuclear power reactor.

Sep 27, 2023 · While the IAEA and U.S. Nuclear Regulatory Commission don't officially recognize the term "nuclear meltdown," it remains a source of fear. In this article, we'll explore nuclear …

A nuclear meltdown refers to a severe malfunction of a nuclear power plant, where a loss of cooling leads to overheating of the reactor core, resulting in the melting of nuclear fuel and …

A nuclear meltdown is the worst case scenario for a nuclear power plant, causing widespread releases of deadly radiation into the environment that can spread hundreds of miles away …

8 hours ago · Nuclear power has a lot of potential, but many fear the dangers of nuclear meltdowns. Fortunately, some new reactors might make that possibility even slimmer.

The fear of meltdown has largely derailed nuclear power's progress in becoming a dominant energy source for the world. But how do meltdowns happen? And are they really something …

Mar 15, 2011 · Nuclear reactors at the Fukushima Daiichi station in Japan are critically endangered but have not reached full meltdown status. Our nuclear primer explains what that …

Aug 29, 2025 · A nuclear meltdown is a severe accident where a nuclear reactor’s core overheats significantly. This occurs when nuclear fuel reaches its melting point due to a cooling system …