nuclear meltdown

(redirected from Core melt accident)
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Noun1.nuclear meltdown - severe overheating of the core of a nuclear reactor resulting in the core melting and radiation escapingnuclear meltdown - severe overheating of the core of a nuclear reactor resulting in the core melting and radiation escaping
overheating - excessive heating
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In a simulated core melt accident of nuclear power plant (NPP), a molten pool called corium can melt through the reactor pressure vessel (RPV) and be released to the containment basemat.
The VVER 440 design does not have a secondary containment system able to protect the public and environment from radioactive material released as a result of a core melt accident and explosions," they said.
Most notably the VVER 440 design does not have a secondary containment system that is able to protect the public and the environment from radioactive material released as a result of a core melt accident and internal or externals explosions," they said.