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[aaronjb]

latest news: ther reactor is completely out of control..

reactor temperatures exceed 2200 Celcius.. As I understand from news only some hours are left for it to be Chernobyl II

Got a link to that, Cem? The latest information I can find suggests that the situation may be approaching a full meltdown but that a) they are close to restoring power to the cooling pumps and b) the international atomic commission is telling everyone that no matter how bad this gets, it could not be anywhere near as bad as Chernobyl.

For a start, as I understand it, the control rods are at least partially inserted in Fukushima, while in Chernobyl there were no safety systems active at all as they'd been effectively bypassed and all warnings were ignored (thanks to the wonderful Communist era disregard for human life vs. cheap energy) - not to mention a number of years difference in plant design and the fact that, even in optimum conditions, the design of the RMBK-1000 reactors used at Chernobyl had some serious deficiences.

[cem_devecioglu]

latest news: ther reactor is completely out of control..

reactor temperatures exceed 2200 Celcius.. As I understand from news only some hours are left for it to be Chernobyl II

Got a link to that, Cem? The latest information I can find suggests that the situation may be approaching a full meltdown but that a) they are close to restoring power to the cooling pumps and b) the international atomic commission is telling everyone that no matter how bad this gets, it could not be anywhere near as bad as Chernobyl.

For a start, as I understand it, the control rods are at least partially inserted in Fukushima, while in Chernobyl there were no safety systems active at all as they'd been effectively bypassed and all warnings were ignored (thanks to the wonderful Communist era disregard for human life vs. cheap energy) - not to mention a number of years difference in plant design and the fact that, even in optimum conditions, the design of the RMBK-1000 reactors used at Chernobyl had some serious deficiences.

optimism is to be able to say nice things when there is an axe inserted in your head

international 'dangle berries' talking comission is telling porkies as usual

and yes there is no radiation leak, in fact there is no nuclear power plant

[aaronjb]

Or, you could just call me a skeptic

2200C is well above the melting point of Uranium, so the fuel would have long since melted into a pool at the bottom of the reactor.. Now while it may have done that, the number looks unreasonably high to me - by 2200C the steel and concrete in the containment vessel would have melted and/or reached flash point and caught fire..

2200F is more likely - which, coincidentally, is the exact number used as the design assumption for the melting point of Uranium .. the fact that it so precisely matches makes me wonder where the figure came from.

[Mysteryman]

Getting away from the reactor situation for a moment, I am really surprised that more effort is not being made to reach the survivors who are out in the cold or hopitalised in the north of the country.
I think it goes to show just how fragile our infrastructure really is.

[aaronjb]

Getting away from the reactor situation for a moment, I am really surprised that more effort is not being made to reach the survivors who are out in the cold or hopitalised in the north of the country.
I think it goes to show just how fragile our infrastructure really is.

Very true - once you've washed the roads away 'we' (modern humans, I mean) suddenly find it very hard to get around..

Although considering the amount of military hardware sitting around not far away, it's a great shame more helicopters and so on aren't flying around

[cem_devecioglu]

Or, you could just call me a skeptic

2200C is well above the melting point of Uranium, so the fuel would have long since melted into a pool at the bottom of the reactor.. Now while it may have done that, the number looks unreasonably high to me - by 2200C the steel and concrete in the containment vessel would have melted and/or reached flash point and caught fire..

2200F is more likely - which, coincidentally, is the exact number used as the design assumption for the melting point of Uranium .. the fact that it so precisely matches makes me wonder where the figure came from.

http://www.news.com.au/world/magnitude-quake-strikes-japan/story-e6frfkyi-1226019903430
( a bit long)



"4.04am IAEA secretary general Yukiya Amano said in a press conference he plans to go to Japan as early as tomorrow and urged Japan to provide better information to the agency.

"There are too many elements that we do not know yet. So it is too early for us to pass judgement on their efforts," - Yukiya Amano

He did confirm that[size=12] core damage had occurred to three units at the stricken Fukushima nuclear plant. [/size]
"The situation ... is very serious."


let me translate..  "We are in deep sh*t and dont know what to do" 

as for 2200 celcius (4000F), source :Kyodo News.. just google..

[Mysteryman]

Or, you could just call me a skeptic

2200C is well above the melting point of Uranium, so the fuel would have long since melted into a pool at the bottom of the reactor.. Now while it may have done that, the number looks unreasonably high to me - by 2200C the steel and concrete in the containment vessel would have melted and/or reached flash point and caught fire..

2200F is more likely - which, coincidentally, is the exact number used as the design assumption for the melting point of Uranium .. the fact that it so precisely matches makes me wonder where the figure came from.

http://www.news.com.au/world/magnitude-quake-strikes-japan/story-e6frfkyi-1226019903430
( a bit long)



"4.04am IAEA secretary general Yukiya Amano said in a press conference he plans to go to Japan as early as tomorrow and urged Japan to provide better information to the agency.

"There are too many elements that we do not know yet. So it is too early for us to pass judgement on their efforts," - Yukiya Amano

He did confirm that[size=12] core damage had occurred to three units at the stricken Fukushima nuclear plant. [/size]
"The situation ... is very serious."


let me translate..  "We are in deep sh*t and dont know what to do" 

Your English gets better when you are passionate.

[cem_devecioglu]

Or, you could just call me a skeptic

2200C is well above the melting point of Uranium, so the fuel would have long since melted into a pool at the bottom of the reactor.. Now while it may have done that, the number looks unreasonably high to me - by 2200C the steel and concrete in the containment vessel would have melted and/or reached flash point and caught fire..

2200F is more likely - which, coincidentally, is the exact number used as the design assumption for the melting point of Uranium .. the fact that it so precisely matches makes me wonder where the figure came from.

http://www.news.com.au/world/magnitude-quake-strikes-japan/story-e6frfkyi-1226019903430
( a bit long)



"4.04am IAEA secretary general Yukiya Amano said in a press conference he plans to go to Japan as early as tomorrow and urged Japan to provide better information to the agency.

"There are too many elements that we do not know yet. So it is too early for us to pass judgement on their efforts," - Yukiya Amano

He did confirm that[size=12] core damage had occurred to three units at the stricken Fukushima nuclear plant. [/size]
"The situation ... is very serious."


let me translate..  "We are in deep sh*t and dont know what to do" 

Your English gets better when you are passionate.

  means my brain upshifts the gear

[aaronjb]

I guess I'm not googling right, because I can't find an article that references the core temperature anywhere.

I did find this, though: http://english.kyodonews.jp/news/2011/03/79046.html

The following is the known status as of Thursday night of each of the six reactors at the Fukushima No. 1 nuclear power plant and the four reactors at the Fukushima No. 2 plant, both in Fukushima Prefecture, which were crippled by Friday's magnitude 9.0 earthquake and the ensuing tsunami.

Fukushima No. 1 plant

-- Reactor No. 1 - Operation suspended after quake, cooling failure, partial melting of core, vapor vented, building housing reactor damaged Saturday by hydrogen explosion, seawater being pumped in.

-- Reactor No. 2 - Operation suspended after quake, cooling failure, seawater being pumped in, fuel rods fully exposed temporarily, vapor vented, building housing reactor damaged Monday by blast at reactor No. 3, damage to containment vessel feared, potential meltdown feared.

-- Reactor No. 3 - Operation suspended after quake, cooling failure, partial melting of core feared, vapor vented, seawater being pumped in, building housing reactor damaged Monday by hydrogen explosion, high-level radiation measured nearby on Tuesday, plume of smoke observed Wednesday and presumed to have come from spent-fuel storage pool, severe damage to containment vessel unlikely, seawater dumped over pool by helicopter on Thursday, water sprayed at it from ground.

-- Reactor No. 4 - Under maintenance when quake struck, fire Tuesday possibly caused by hydrogen explosion at pool holding spent fuel rods, abnormal temperature rise in spent-fuel storage pool, fire observed Wednesday at building housing reactor, pool water level feared receding, renewed nuclear chain reaction feared.

-- Reactors No. 5, 6 - Under maintenance when quake struck, water temperatures in spent-fuel storage pools increased to about 64 C on Thursday.

-- Spent-fuel storage pools at all reactors -- Cooling functions lost, water temperatures or levels unobservable at reactors No. 1 to 4.

Fukushima No. 2 plant

-- Reactors No. 1, 2, 4 - Operation suspended after quake, cooling failure, then cold shutdown.

-- Reactor No. 3 - Operation suspended after quake, cold shutdown.

[Lizzie_Zoom]

Late this afternoon UK nuclear power experts were saying the good news was today, for the first time, there had been no change in the situation with radiation levels outside the 80km zone at acceptable, almost normal levels, with Tokyo at normal, SAFE, levels.  Only around the plant itself are levels higher, but are being contained so far!  There are also more International organisations assisting and monitoring the situation now, who are also saying about today showing no change in the radiation levels.

So stop panicking!     

What will be will be, so just pray for the Japanese who have lost almost everything, whilst others, looks like around 15,000, have lost everying including their lives!

[cem_devecioglu]

I guess I'm not googling right, because I can't find an article that references the core temperature anywhere.

I did find this, though: http://english.kyodonews.jp/news/2011/03/79046.html

The following is the known status as of Thursday night of each of the six reactors at the Fukushima No. 1 nuclear power plant and the four reactors at the Fukushima No. 2 plant, both in Fukushima Prefecture, which were crippled by Friday's magnitude 9.0 earthquake and the ensuing tsunami.

Fukushima No. 1 plant

-- Reactor No. 1 - Operation suspended after quake, cooling failure, partial melting of core, vapor vented, building housing reactor damaged Saturday by hydrogen explosion, seawater being pumped in.

-- Reactor No. 2 - Operation suspended after quake, cooling failure, seawater being pumped in, fuel rods fully exposed temporarily, vapor vented, building housing reactor damaged Monday by blast at reactor No. 3, damage to containment vessel feared, potential meltdown feared.

-- Reactor No. 3 - Operation suspended after quake, cooling failure, partial melting of core feared, vapor vented, seawater being pumped in, building housing reactor damaged Monday by hydrogen explosion, high-level radiation measured nearby on Tuesday, plume of smoke observed Wednesday and presumed to have come from spent-fuel storage pool, severe damage to containment vessel unlikely, seawater dumped over pool by helicopter on Thursday, water sprayed at it from ground.

-- Reactor No. 4 - Under maintenance when quake struck, fire Tuesday possibly caused by hydrogen explosion at pool holding spent fuel rods, abnormal temperature rise in spent-fuel storage pool, fire observed Wednesday at building housing reactor, pool water level feared receding, renewed nuclear chain reaction feared.

-- Reactors No. 5, 6 - Under maintenance when quake struck, water temperatures in spent-fuel storage pools increased to about 64 C on Thursday.

-- Spent-fuel storage pools at all reactors -- Cooling functions lost, water temperatures or levels unobservable at reactors No. 1 to 4.

Fukushima No. 2 plant

-- Reactors No. 1, 2, 4 - Operation suspended after quake, cooling failure, then cold shutdown.

-- Reactor No. 3 - Operation suspended after quake, cold shutdown.

at 1200 Celcius, hydrogen gases occur because of etc etc and explode , this was 2-3 days ago..

[Nickbat]

All Fukushima Daini units now in cold shutdown. No known radiation deaths.

http://www.world-nuclear-news.org/IT-All_Fukushima_Daini_units_in_cold_shutdown-1503114.html

Time for the mainstream media to move on and find a new story that they can exaggerate to cause panic and worry.   

Footnote from Lewis Page (journalist)
As one who earns his living in the media these days, I can only apologise on behalf of my profession for the unbelievable levels of fear and misinformation purveyed this week. I have never been so ashamed to call myself a journalist. 

http://www.theregister.co.uk/2011/03/18/fukushima_friday/page3.html

[cem_devecioglu]

Nickbat, media is not completely reflecting the truth.. you have right .. but its worse.. few minutes ago an expert talked and said, although level 5 is announced its actually 7 now.. why do proud Japan govt ask help from Usa..

[Debs.]

  Nick, I`d dearly love to believe that story; but Japanese State broadcaster NHK, are reporting it in VERY less reassuring tones......so, I`ll be trusting their reportage.

http://www3.nhk.or.jp/nhkworld/

[Nickbat]

Nick, I`d dearly love to believe that story; but Japanese State broadcaster NHK, are reporting it in VERY less reassuring tones......so, I`ll be trusting their reportage.

http://www3.nhk.or.jp/nhkworld/

It was the Daini reactors that have achied cold shutdown. The Daiichi reactors 3 & 4 are still troublesome.