Look at this explosion at 47 seconds into the video.
A violent hydrogen explosion, demolishing such a
heavily reinforced containment building, must have
been the result of a badly overheated reactor.
Japan claims the reactor is intact. But that large of an explosion
could have caused all kinds of damage and leaks that
have yet to be found, or admitted by the Japanese govt.
Japan Nuclear Reactor EXPLOSION Fukushima Meltdown
Japan is reporting the prevailing winds are out to sea.
They've already evacuated 300,000 from the area.
And Fukushima #1 is one of the largest 25 reactors
in the world. And was built ...way back..in 1970.
The first reactor built by it's builder.
I can't help feeling that given that Japan is frequently the subject of
tsunamis (even if not usually this bad), and that there is a clear link
between tsunamis and earthquakes, the nuclear plant backup generators
should have been in a place that is hardened so as to resist a tsunami.
plants werent built to survive much more than a 7.1 since larger
earthquakes are very rare, and the plants would cost ar more.
news now reports 2 reactors exploded and 6 are in trouble.
if the core melts down completely does anyone really know what will
I think there are no more problems. In Chernobyl, the core is
operational when it explodes. In Japan, the control rods were lowered
that controls and stopped the nuclear reactions, so it's not getting
hot anymore and I think what they are doing are simply lowering the
temperature that occured before it shuts off. So there may not be in
danger anymore.. unless the control rods fail to lower down? The
control rods absorb neutrons from the uranium.
During a real meltdown, the nuclear reaction continues and the uranium
becomes molten and bore thru the 6 inches of stainless steel and if it
bore thru the cement floor, it can get underneath the facility and
when it reacts with water, it can contaminate the surrounding, even if
it didn't get out of the cement floor, if it explodes inside the air
contamination can also get out.
But the problem in japan seems to be minor now because the nuclear
reactions are no longer occuring and it is only the prior temperature
of the reactor that is being lowered, right?
Btw... how many miles in outer space before leaking nuclear fuels are
no longer in danger of reaching the earth?
I don't think the core containers are damaged. Where did you hear it?
Also the control rods are functionining property. This seem to be what
this nuclear expert Fred Mccall is convincing us. That there is
nothing to be concerned about. The Japanese are just lowering the
temperature which existed prior to the Earthquake. It is no longer
producing new heat because the neclear reactions are already off when
the control rods are lowered. You were just speculating the control
rod didn't function property. We assume they are. If not, then it's
going to be a problem because the nuclear reactions can generate new
heat... but this is unlikely. Control rods are lowered by simple
actuator machine which seldom fail especially in mil spec
configuration used in nuclear power plants.
On this type of reactor, even if the control rods were fully
inserted, the core has to be cooled for several days
or it'll still melt down. And this very old type of reactor
melts down is minutes once the core is exposed.
So IF they're keeping the core cooled by sea-water, which
is not part of any recognized failure scenario, all that water
would be quickly leaking back out and it would be heavily
contaminated. Probably being flushed out to sea.
I think at this point they're trying to keep the core from melting
through the steel vessel, if that happened then massive amounts
of radiation would be carried away by the winds. Right now
it's all going into the sea water I think.
On CNN they're reporting a US helicopter flew through the
smoke line and17 crew members were contaminated with radiation.
That's a faulty assumption with these very old reactors, it may be
true for most reactors, but these need to be cooled after the
rods are fully inserted for an extended period of time.
Most nuclear plants have their control rods held in place
above the core by electro-magnets. So if the power fails
the rods must fall completely into the core. But not this
reactor, they are hydraulically raised from below.
I think the reason these reactors failed, when so many others in the
region didn't, is because of their age (1967) and very simple
and....cheap design. Right now I bet they're furiously trying to
cool those reactors before the wind changes to the south.
Right now any radiation is going out to sea in the water and wind.
But in a day or two, the winds could shift south and the
radiation could contaminate the ...entire nation.
Quite a drama going on right now over there I bet.
Cite that this is somehow different from other reactors?
You don't seem to understand. No water comes out except as steam.
What they're doing is called 'pump and dump' and while it's not
something you want to be in the position of having to do, it's
certainly a 'recognized failure scenario'.
Well, no, you DON'T think. That's part of the problem.
Again you trot your ignorance out for all to see. Please provide a
cite that shows that this is any different from any other nuclear
I think you're an ignorant fool. I'd bet what I think is right and
what you think is, well, foolish.
"Ignorance is preferable to error, and he is less remote from the
truth who believes nothing than he who believes what is wrong."
On Mon, 14 Mar 2011 21:09:30 -0700, Fred J. McCall
Everything that comes in contact with the core is contamninated.
Ocean water will spreaad the radioactivity all over the world.
If the BP oil mess didn't stop people from eating sea food, they
better stop now.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.