WI: Chernobyl Thermal Explosion?

Iodine 131 has a half-life of 8 days. Wait a few months, and less than 0.01% of it is left. People can take precautions or evacuate temporarily to avoid it. The problem in Nevada was probably Johnrankin's point about 90 tests rather than just a single incident, plus a total lack of precautions.
And that they were nuclear , not chemical, explosions. You aren't going to have huge mushroom clouds from a hydrogen gas explosion spreading it over a wide area.
 
if the explosion is big enough, like 1 kilotons, you will have a mushroom cloud.
A one KT hydrogen explosion is one hell of a lot of hydrogen and 1KT is a baby nuke! That is a little over 1.4 million (hydrogen gas is 1.4 times as explosive as TNT) pounds of hydrogen under ideal conditions. In real life it is going to take a lot more than that. For one thing the oxygen/hydrogen mix won't be perfect.
 
A one KT hydrogen explosion is one hell of a lot of hydrogen and 1KT is a baby nuke! That is a little over 1.4 million (hydrogen gas is 1.4 times as explosive as TNT) pounds of hydrogen under ideal conditions. In real life it is going to take a lot more than that. For one thing the oxygen/hydrogen mix won't be perfect.

the fear was of a steam explosion, not a hydrogen explosion. And yes, it was a hell of a lot of water under that reactor, about 20,000 tonnes of it.
 
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marathag

Banned
Iodine 131 has a half-life of 8 days. Wait a few months, and less than 0.01% of it is left. People can take precautions or evacuate temporarily to avoid it. The problem in Nevada was probably Johnrankin's point about 90 tests rather than just a single incident, plus a total lack of precautions.
except those detonations effects were over quickly.
Different than a continuing plume.
Groundwater table isn't always an underground lake, but small amounts that water flashes to steam with little cooling of the lava, and water is a moderator to increase the fission rate. That's why meltdowns are so terriflying when uncontained
 
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