25 Sieverts per hour

I have known about this issue for some time, but never really realized how dire the situation really is.

This is not doom porn, this is simply reality.

25 Sieverts per hour.... not micro....not milli..... 25 sieverts per hour. This would be fatal to humans in a short period of time... and time is quickly running out.

The stack in question lies behind reactors 1 & 2..... the stack is badly damaged and in danger of collapsing at any moment.




nuclear-news.net...


So what happens if the stack comes tumbling down and spreads around material that is clocking in at 25 sieverts per hour?

Nothing good is the only thing I can say.....

Keep in mind that the 25 sieverts per hour reading is from the bottom of the stack... another area has readings of 15 sieverts per hour... the cracks shown in the above picture are at the 60 meter level... where this is in relation to the readings, I have no idea.

Quick,,see if there are any Cranes around,,




In danger,,really??
of collapsing,,


a reply to: RickinVa

a reply to: BobAthome


The stack in question is the one to the rear I believe......I don't see a crane holding it up.

And yes the stack is in danger of collapsing. They can't repair it, the readings are too high for workers to make the repairs.

There is a known effect of radiation, especially high radiation reading and its effects on steel, iron etc..... Fukushima is only 3 three years young and they already are seeing these effects..... this is why the sarcophagus at Cherny has to be repaired/replaced,,, the radiation weakens the concrete after a period of time.

Unless they have several support cables hooked up to a crane 24/7/365.....that is the only way to keep it from collapsing. I have seen the cranes moving around,,, they aren't supporting any emmisions stacks.

PS: Tepco's webcams are too crappy to really make out any fine details.... you can't make the assumption they are using cranes to support the stacks.

When the stack goes, it will go without warning.... most likely during another earthquake would be my guess.... although as bad as it looks, I suppose a good typhoon could take it down.... and spread whatever is inside it all over who knows where!

lol I don't see a crane holding up a stack for the next 30-40 years,,, but maybe that's just me.

If your post is solely to claim that Tepco is using cranes to support the stack to keep it from falling, please link a source or at the very least a credible picture that shows this.

a reply to: RickinVa

You're talking about the emissions stack, the big towers for emergency venting?

Not good. They were used extensively to release pent up pressure in the reactor buildings (their primary purpose) before the first explosions occurred. Their inner surfaces are coated with a lot of radioactive material. Heres a video of # 1 venting in the early hours saturday morning (day after the Earthquake)…Some snapshots I took from an infrared video the night before… the number one stack is lit up like a christmas tree.




That upright white line is the number 1 emergency vent stack and its hotter than hell. Note the bottom half of building number 1 as well.

a reply to: intrptr

Yes.. the emissions stack. The metal and supports are growing weaker every day.

its the stack directly behind units 1 & 2 and it's highly radioactive.

To put this in perspective.... that stack might have been ready to collapse 3 years ago.... or it might be ready to collapse 3 more years from now.... or it may collapse tomorrow.

Judging by the pictures above, there are some serious questions about the stability and integrity of the stack and it's something people should be aware of.... if it collapses, it could change the whole outlook for Fukushima, or at the very least put a dent in the "decommissioning" time frame.

Thank you RickinVa,

It has become near impossible to find anything other than propaganda coming out of Japan for the last 6 months since it passed it's new Official Secrets Laws.

This report has left me feeling sick to my stomach.

Contrasting this tragic account is the current mega-motion picture written and produced by the American Military Industrial Complex, 'Godzilla', which makes light of the situation and even goes so far as to represent the Fukushima exclusion zone as a fraud.

That's your tax dollars at work for you.

a reply to: BobAthome

This is a pic taken just a couple of minutes ago of the emission stack and crane:



As you can see, the crane is not holding up the stack or even connected to it. Although you can not see the top of it, if you observe the same webcam you capped from, you can clearly see there are no other cranes.

This is from the other angle... it looks like the crane in the first picture is near the stack, but you can see in reality that it isn't that close:



I don't think anything is supporting the stack.

a reply to: RickinVa

Vent stacks the world over are problematic for decommissioning. They are typically constructed of reinforced concrete or brick and they are a) very tall, b) highly contaminated, and c), difficult to bring down without spreading the contamination over a wide area.

The reason they are so hi is to carry their emissions far from the plant. The reason they are reinforced is for strength (like in an earthquake zone). The reason they are contaminated is durning the normal course of plant operations over its lifetime, typically lots of little incidents occur that require some form of emergency venting. Although the actual release point at the top of the stack contains filters, the inside of the stack all the way up is coated with the detritus accrued over the plants lifetime… and that is from normal operations.

These cores melted down. For nearly 24 hours this one stack bore the brunt of the emissions from the melting core inside the number one reactor. As the core melted, radioactive hydrogen gas and other fission by products were vented out the #1 stack. The IR image of the #1 vent stack in the photos I brought in my earlier post show how thermally hot the stack became in the predawn hours, Saturday. The walls of the stack are thick concrete, the heat required to light it up like that is enormous.

And it still wasn't enough to prevent what happened next. Once ignited the hydrogen explosion blew the top of the building off.

The combination of the earthquake and the subsequent aftershocks, the Tsunami, explosions from the plants and the radioactive decay from the high emissions during venting have weakened the structure substantially.

You just don't knock these things down. They have to be taken down from the top, bit by bit. The reinforced concrete making it most difficult by stirring up a dust cloud that will drift with the wind.

Considering the cores themselves and the fuel pools take priority before the stacks can be decommissioned means they will sit until they get around to it.

Tick, tock…

"Considering the cores themselves "

well for one i would start with the STACKS,
cause thats where the manual says it should go.

and yes THE CRANE IS CLOSE ENOUGH

TOO MOVE TOO THE ,,

stack that is in emminent danger of collapse.

where John Wayne when u need him?


a reply to: intrptr

a reply to: BobAthome

coulda shoulda woulda.....


Of course the crane is close enough... any of the cranes would be close enough.

But they aren't connected..... do you think the emissions stack is going to send out rsvp invites before it goes?

Is the next earthquake going to phone in reservations 2 hours in advance before shaking the ground?

The point is....when (and if) the tower goes,,, unless support cables are hooked up to it prior, it will too late to move cranes or anything else.... it will be nothing but a big ole pile of irradiated metal and concrete.... if it falls the wrong way, it could actually land on reactor 1 or 2.

EDIT: I have to agree with the assessment that the stacks are low on the priority pole.... My guess for a worst case scenario would for the tower to fall and release large doses over the immediate surrounding area, which would into in turn lead to them have to abandon the plant because of high radiation levels which leads to.......and the list goes on

And we need about a 1000 John Waynes to send to Fukushima..... if they couldn't fix it, we would be doomed lol....

a reply to: intrptr

Looks to be the same brightness as all the other buildings nearby to me.

sorry it just that one would think,, they would have already taken care of the problem,,because it is not for lack of cranes,,

yes i know i expected thinking,,,,sorry.a reply to: RickinVa

Remember folks.... the 25 sievert per hour reading has been known about for quite some time now, there's nothing Tepco can do about it ...it's too hot to even get close to it.... but those pictures of the actual joints is downright scary.

originally posted by: AlphaHawk
a reply to: intrptr

Looks to be the same brightness as all the other buildings nearby to me.

What looks to be the same…?

a reply to: intrptr

The buildings look the same brightness as the stack.

It's not lit up like a christmas tree.