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Merged 8.8 quake in Sendai, Japan

Aepervius said:
OH and by the way , accusing the people of being "conspiracy theorist" is apparently the new insult used to stop *ALL* debate on this forum. Congratulation on your ad hominem.
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And if you are on german fora, one will instantly be declared a paid nuclear-energy shill if one dares to mention some facts instead of the hype. While these people making those accusations could also be declared paid shills, namely shills for the solar and wind industry.

The sheer level of ignorance of the facts ist really frightening. But then, it's not really a surprise considering the amount of Bil-like tabloids sold and blindly believed over here.

Oh, and dare you tell these people that solar cells are anything, but not environmentally friendly. Then you are in for an astonishing show of denial.

Greetings,

Chris
 
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DC said:
lowering pressure so the damn thing doesnt blow up.....
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So explain to me why lowering the pressure is a bad thing and not a good thing while also acknowledging that any preconceived notions about getting rid of hydrogen are fundamentally flawed from an elementary school level of chemistry.
 
technoextreme said:
So explain to me why lowering the pressure is a bad thing and not a good thing while also acknowledging that any preconceived notions about getting rid of hydrogen are fundamentally flawed from an elementary school level of chemistry.
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i never said it is a bad thing to lower the pressure......
but that half the building blowup is not a good thing in my eyes......

:rolleyes:
 
Aepervius said:
If you live outside germany, then you have NO call to take some guy name at random and say it agreed with you.
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Well, to be fair, he surely cann call that what this guy said agrees with his opinion. However, that does in no way mean that what this guy spouts agree with reality. Especially given the fact that this guy has an agenda.

Greetings,

Chris
 
Dan O. said:
The P waves travel at about 9km/s. It will reach the first sensor in 2-3 minutes but that gives you no information about the quake (except if you have a 3 axis seismometer you can get a vector to the quake by looking at the first arrival). The S wave is typically used to compute magnitude. S waves travel at only half the speed of the P waves. If you calculate the magnitude from a single station you could get a misleading result. It is necessary to get measurements from multiple azimuths around the epicenter to properly determine the orientation of the event and therefore the actual magnitude. Depth information comes from the more distant stations out to about 30 degrees.

The 20 minute delay is what I was told is typical for the earthquakes for this event in Japan. Generally, the delay will be up to 30 minutes for world wide events.

ETA: Within the US where there is a higher density network, the delay should be closer to 5 minutes. If you need a faster response, you need a local network like they have in Japan and other high seismicity regions and probably need to accept a lower accuracy of data (ie: you know the event is close and big but don't have an exact location or magnitude).
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Thanks for the explaination. Makes sense.
 
Christian Klippel said:
Well, to be fair, he surely cann call that what this guy said agrees with his opinion. However, that does in no way mean that what this guy spouts agree with reality. Especially given the fact that this guy has an agenda.

Greetings,

Chris
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:rolleyes:
 
Undesired Walrus said:
Slightly (well, largely) off topic, but does anyone know the reason why Japan's Prime Minister's resign so frequently? I believe the last parliament had four, and this one already has already had two. The last one resigned because he broke a campaign promise. If the rest of the world's leaders did that we'd have many leaving office after a few days!

Is it a cultural thing?
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I think the economy has something to do with it.
 
DC said:
i never said it is a bad thing to lower the pressure......
but that half the building blowup is not a good thing in my eyes......

:rolleyes:
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It's really quite simple, and i'm surprised that you fail to understand that.

Not releasing the pressure would mean that sooner or later the pressure vessel will explode. So they did release the pressure.

However, the resulting vapor and gases are slightly radioactive, albeit with a very, very short half-life period. So they did not vent it directly into the atmosphere to avoid even more fear mongering ("Look! The levels are rising! We are all going to die!"), but "into the building" instead, so they could wait a little time and then vent it to the outside.

And that's where the explosion then happened. It happened in an area that is pretty useless anyways, when it comes to the safety of the core in this situation. It just blew the roof away. A roof that is there to keep stuff from coming in, like rain and birds. It was never ever designed to keep things inside anyways.

So they did a minor mistake by nor venting it to the outside directly to prevent more fear-mongering coming up. That strategy failed, but the result of such an explosion is of pretty much no consequence.

If they had vented directly, people would have gone nuts instantly, due to the radiation levels that would have been elevated for a very brief period of time.

In fact, they were fully aware that the explosion can happen, and not surprised at all that it did in fact happen.

Is this really so hard to understand? What would you have done instead? And if you say "vented directly", would have you been stayed silent with regards to the increased radiation levels that would result for a short period? Or would you have jumped onto that instead and made a mountain out of a molehill as well?

Greetings,

Chris
 
Christian Klippel said:
It's really quite simple, and i'm surprised that you fail to understand that.

Not releasing the pressure would mean that sooner or later the pressure vessel will explode. So they did release the pressure.

However, the resulting vapor and gases are slightly radioactive, albeit with a very, very short half-life period. So they did not vent it directly into the atmosphere to avoid even more fear mongering ("Look! The levels are rising! We are all going to die!"), but "into the building" instead, so they could wait a little time and then vent it to the outside.

And that's where the explosion then happened. It happened in an area that is pretty useless anyways, when it comes to the safety of the core in this situation. It just blew the roof away. A roof that is there to keep stuff from coming in, like rain and birds. It was never ever designed to keep things inside anyways.

So they did a minor mistake by nor venting it to the outside directly to prevent more fear-mongering coming up. That strategy failed, but the result of such an explosion is of pretty much no consequence.

If they had vented directly, people would have gone nuts instantly, due to the radiation levels that would have been elevated for a very brief period of time.

In fact, they were fully aware that the explosion can happen, and not surprised at all that it did in fact happen.

Is this really so hard to understand? What would you have done instead? And if you say "vented directly", would have you been stayed silent with regards to the increased radiation levels that would result for a short period? Or would you have jumped onto that instead and made a mountain out of a molehill as well?

Greetings,

Chris
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i didnt even read your strawmen further than the first line.
i freaking know that it was essential to release the pressure........

lauter Klugscheisser hier.....
 
DC said:
i didnt even read your strawmen further than the first line.
i freaking know that it was essential to release the pressure........

lauter Klugscheisser hier.....
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and btw, what is your source that they did not vent the building to prevent fearmongering? source?
 
DC said:
and btw, what is your source that they did not vent the building to prevent fearmongering? source?
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huh? they did risk the reactor being damaged by the explosion to prevent fearmongering, really? are you really going with that made up story?
 
DC said:
huh? they did risk the reactor being damaged by the explosion to prevent fearmongering, really? are you really going with that made up story?
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It didn't risk damaging the reactor. How hard is this DC? The reactor (and containment area) are safe, were safe and will be safe so long as nothing really really really serious happens. The roof of the building the reactor and containment areas are in blew off. That's it.

Had they vented directly, the radiation levels would have spiked due to the exceptionally short half-life radiation released, which would have caused panic. Venting into the building meant that they had the chance to vent outside when the radiation had gone, or had the chance to cause a minor and fairly safe explosion.
 
MarkCorrigan said:
It didn't risk damaging the reactor. How hard is this DC? The reactor (and containment area) are safe, were safe and will be safe so long as nothing really really really serious happens. The roof of the building the reactor and containment areas are in blew off. That's it.

Had they vented directly, the radiation levels would have spiked due to the exceptionally short half-life radiation released, which would have caused panic. Venting into the building meant that they had the chance to vent outside when the radiation had gone, or had the chance to cause a minor and fairly safe explosion.
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evidence for your claims :rolleyes:

LOL this is getting so laughable....

you guys make up crap as you go along..... but then cry about media outlets ROFLMAO
 
MarkCorrigan said:
It didn't risk damaging the reactor. How hard is this DC? The reactor (and containment area) are safe, were safe and will be safe so long as nothing really really really serious happens. The roof of the building the reactor and containment areas are in blew off. That's it.

Had they vented directly, the radiation levels would have spiked due to the exceptionally short half-life radiation released, which would have caused panic. Venting into the building meant that they had the chance to vent outside when the radiation had gone, or had the chance to cause a minor and fairly safe explosion.
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I doubt the reactor is set up to allow venting outside the building. Venting goes on inside the building with an igniter to prevent an accumulation of hydrogen gas. The problem is that the igniter, like just about everything else at the reactor, didn't have power.
 
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