nuclear meltdown

(redirected from Core meltdown)
Also found in: Thesaurus, Acronyms.
ThesaurusAntonymsRelated WordsSynonymsLegend:
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
Translations
References in periodicals archive ?
In summary on Fukushima, a 40 year old nuclear plant essentially survived Japan's worst recorded earthquake, and although three core meltdowns are likely to have occurred, there has been no exposure of their fuel outside the pressure and containment vessels.
These include additional systems to prevent core meltdown and innovation to mitigate its potential consequences as well as technological advances to ensure resistance to external hazards, in particular earthquakes.
The 1979 nuclear accident at Three Mile Island involved a partial core meltdown of a pressurized water reactor.
But a cooling systems failure would lead to a core meltdown, similar to the Chernobyl accident, which caused immediate deaths from radiation exposure.
He asserted that a Fukushima-like accident is impossible at Iter as the fusion reaction is fundamentally safe and any disturbance from ideal conditions and the reaction will stop, adding that a runaway nuclear reaction and a core meltdown are simply not possible.
Correction (published May 19, 2010): The 1979 nuclear accident at Three Mile Island involved a partial core meltdown of a pressurized water reactor.
CRAC-2 found that a core meltdown and consequent radiological release at one of the two operating Indian Point reactors could cause 50,000 early fatalities from acute radiation syndrome and 14,000 latent fatalities from cancer.
with the K-19 arise that may lead to a core meltdown and explosion that
To cause a core meltdown and disperse radioactive material, attackers would have to defeat the security systems and destroy or disable its multiple safety systems simultaneously.
A Globalise Resistance spokesman said yesterday: "The city centre will witness scenes of a simulated nuclear reactor core meltdown.
Despite a second explosion at the site, Japanese authorities are playing down the danger of a core meltdown in one of the reactors.
Another new requirement is to install a vent system that has special filters able to remove radioactive materials when reducing pressure within reactor containment vessels, a move designed to hold down contamination even in the case of a core meltdown.