EPThttp://www.onorbit.com/node/3085
And I made a gif out of those images which I guess shows the magnitude of destruction very well;
+ Show Spoiler +
![[image loading]](http://i.imgur.com/Kc6XS.gif)
Crisis in Japan - Page 99
| Forum Index > General Forum |
Thread is about the various issues surrounding Japan in the aftermath of the recent earthquake. Don't bring the shit side of the internet to the thread, and post with the realization that this thread is very important, and very real, to your fellow members. Do not post speculative and unconfirmed news you saw on TV or anywhere else. Generally the more dramatic it sounds the less likely it's true. | ||
|
Tiax;mous
669 Posts
http://www.onorbit.com/node/3085 And I made a gif out of those images which I guess shows the magnitude of destruction very well; + Show Spoiler + | ||
|
Maggeus
France277 Posts
On March 14 2011 01:11 Grettin wrote: "1606: A pump within the cooling system of one of the reactors at the Tokai nuclear power plant has stopped working, according to the Kyodo news agency. The plant is located in the Naka district of the central prefecture of Ibaraki, and is operated by the Japan Atomic Power Company." A REB has more than one pump. I'm not absolutely sure it's the same with Tokai, but if it's only one pump, it should still be able to cool down the reactor enough, since the reactor's alreaby been cooled a little after the automatic shut down of the power-plant. Furthermore, a lot of reactors uses passive system or gravity if there's a problem with a pump. | ||
|
magha
Netherlands427 Posts
:O | ||
|
thehorsebecomesking
189 Posts
| ||
|
FLu
Germany147 Posts
| ||
|
SKC
Brazil18828 Posts
On March 14 2011 01:49 FLu wrote: Doesn't Uran split into Cesium and if, doesn't cesium have a long half-life? What if this gets out? Uranium leaking would indeed be bad, but that's a worst case scenario that so far doesn't seem too likely, the containement structure is supposed to be intact. | ||
|
Maggeus
France277 Posts
And if it gets out, it depends on the mass that gets out, the winds, etc... We don't know what will be the consequences for now. | ||
|
nukkuj
Finland403 Posts
I hope they are able to recover from all this. I was planning to use my holiday in Tokyo, but I'm bit puzzled if it's appropriate to visit there if everyone are more or less devastated because of this.  Gambatte! | ||
|
aqui
Germany1023 Posts
http://www.nytimes.com/interactive/2011/03/12/world/asia/the-explosion-at-the-japanese-reactor.html?ref=asia teaser: ![[image loading]](http://img231.imageshack.us/img231/5338/reactorr.jpg) Some explanations ( sorry for any redundancy, the thread is too long to read completly). Picture 3: The basic principle in for example an uran235 reactor is that the energy of the atom core is higher than the combined energy of the barium145 and krypton88 cores. Normally though, there is an energy barrier than prevents u235 to decay ( like a ball which lays in a high valley although its potential energy is lower in a lower valley but it can't just roll over the mountain to get to the low valley^^). If the u235 catches an neutron though, it can be pushed over the mountain / decay to barium and krypton and 2 neutrons and release part of the energy difference in form of kinetic energy of the neutrons which could be used to heat surrounding water by bumping into it. The Neutron can also be catched by another u235 atom and trigger another decay. By controlling the number of neutrons that can reach other u235 atoms you control the reaction, which is done by putting neutron absorbing materials (control rod) between the rods containing u235. So one way to stop the chain reaction is to position the control rods to absorb most of the neutrons. Picture 4: The heat that is generated (partly by bumbs of the neutrons with the surrounding materials) has to be led away to prevent the u235 rods from melting ( in the worst case the melted uran could flow past the control rods and uncontrolably kind of chain react). A problem when the cooling fails is not only that the rods get warmer but also that gas bubbles can be created from the water near the rods and most gases led heat a lot worse than water or steam, making the overheating even worse. If the water gets to hot and steam bubbles are created they can chemically react with parts of the reactor to Hydrogen gas. So if you release Hydrogen you for one increase the heat conductivity in the reactor and you lower the temperature (it costs energy to make gas from a fluid). Notice that while all this happens the control rods are down and the chain reaction itself is stopped, the heat that causes the problems is for example generated by decays of the Barium to Cesium and Idodine meaning that the longer you wait the smaller the danger gets. Picture 6,7: The danger with the explosion of the secondary vessel is that when you release the pressure in the reactor radiactive stuff like cesium137 and iodine131 also get out. Danger of radioactivity: Many functions of your body are carried out by proteins "the machines of the body" which are created in your cells all the time and whose blueprints are written in the DNA in the cell core. Part of the radioactive radiation randomly alters or destroys the DNA resulting in proteins that do not work causing your body to fail. Normally your DNA is constantly repaired but if there is too much radiation the body can't cope with it. | ||
|
LanTAs
United States1091 Posts
On March 14 2011 01:49 FLu wrote: Doesn't Uran split into Cesium and if, doesn't cesium have a long half-life? What if this gets out? Cesium has a half life of about thirty years i believe... any of that crap coming out will lead to long term health effects like cancer, and some other thingies. Daiichi reactor exploded 0.0 yesterday, trying to find source, i read it on the newspaper EDIT:bingo! LATIMES another reactor fails And aparently the core of the reactor is still... intact? | ||
|
JoelB
Germany311 Posts
| ||
|
ZeaL.
United States5955 Posts
The danger is not as high as the media would want you to think, the worst case scenario is not going to be as bad as chernobyl but more like three mile island. | ||
|
{CC}StealthBlue
United States41117 Posts
Panic over at Tokai. Cooling pump failed at plant 120km from Tokyo - but an additional pump is now working and cooling the reactor #Japan Insurance claims following #Japan's offshore earthquake could hit US$35billion, according to initial estimates. | ||
|
Ghad
Norway2551 Posts
On March 14 2011 03:17 {CC}StealthBlue wrote: I did a little resarch into this yesterday. Actually the economic impact of the disaster is probably negligible in the big picture, especially when you take into account this little snippet from wikipedia: GDP of Japan: - Total $4.308 trillion (3rd) Still a terrible cost in lives lost and destroyed of course, i mean no disrespect. | ||
|
farseerdk
Canada504 Posts
| ||
|
True_Spike
Poland3434 Posts
| ||
|
Laids
United Kingdom596 Posts
1. Has the giant mud/debris wave stopped yet? 2. How much of an impact will this have on Japan's economy? The damage looks massive, huge amounts of farmland lost, many ports destroyed, houses, roads, ect... I've never seen a natural disaster this bad, | ||
|
Grettin
42411 Posts
+ Show Spoiler + ![[image loading]](http://static.iltalehti.fi/ulkomaat/pelastus1JOB_ul.jpg) ![[image loading]](http://static.iltalehti.fi/ulkomaat/pelastus3JOB_ul.jpg) ![[image loading]](http://static.iltalehti.fi/ulkomaat/pelastus4JOB_ul.jpg) Glad he made it, must've been tough sail. | ||
|
ondik
Czech Republic2908 Posts
| ||
|
LuckyFool
United States9015 Posts
On March 14 2011 03:46 Grettin wrote: Apparently the rescue crew saved a 60 years old Japanese man floating on a "roof raft" for two days in the ocean after the tsunami wiped the whole capital where hes from. + Show Spoiler + Glad he made it, must've been tough sail. wow that's awesome hope they keep finding people... I fear the death toll is going to just keep rising. | ||
| ||
