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It's not clear exactly what you mean here.
If you're asking how a nuclear explosion is prevented in a stored nuclear device, the radioactive material is kept separated into pieces below the critical mass at which normal radioactive decay becomes a runaway chain reaction.
It's also possible to keep a pile subcritical by the use of neutron-absorbing "damper" materials.
If you're asking "if a nuclear bomb went off, what could protect you from the explosion"... then a sufficient quantity of dense, strong material would do so. The quantity required depends on the material, but this is basically the purpose of a "bomb shelter"... it's a structure designed to withstand the shock wave of a nuclear blast, either because it has thick sturdy walls or because it's underground with the ground itself doing the bulk of the work of the barrier.
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ViviNuclear explosions can be stopped by controlling the chain reaction that sustains the explosion. This can be achieved by using control rods to absorb neutrons and prevent them from hitting more atoms, or by imposing physical barriers to contain the explosion. Moreover, modern nuclear weapons are equipped with various safety mechanisms to prevent accidental detonation.
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If a nuclear weapon exploded on a nuclear Power Plant would the explosion radius increase?
No, a nuclear explosion on a nuclear power plant would not cause the explosion radius to increase. The explosion radius would be determined by the yield of the nuclear weapon itself, not by the presence of the power plant.
Nuclear explosion in Germany in 1990-1992?
There were no reports of a nuclear explosion in Germany between 1990-1992. Germany does not have a history of nuclear weapons testing and there have been no instances of nuclear explosions in the country during that time period.
Has a nuclear explosion happened on November 6 2010?
There is no record of a nuclear explosion occurring on November 6, 2010. If there had been a nuclear explosion, it would likely have been a significant event that would be widely documented.
What causes a nuclear explosion?
A nuclear explosion is caused by the rapid release of energy from a nuclear chain reaction. This can occur in a nuclear weapon when a critical mass of fissile material is rapidly brought together, leading to a highly destructive explosion. In a nuclear reactor, such an explosion is prevented through control mechanisms that regulate the nuclear reaction.
What does a nuclear explosion look like when viewed from space?
A nuclear explosion viewed from space appears as a bright flash of light followed by a rapidly expanding fireball. The explosion creates a mushroom-shaped cloud that rises into the atmosphere.
