DISASTER Fukushima Reactor Disaster: MAIN THREAD - Five Year Anniversary

Catbird

Inactive
Kyodo News:

#
BREAKING NEWS: So far no reports of injuries from No. 3 reactor's explosion: EdanoNote
#
11:45 14 March
BREAKING NEWS: No reports of No. 3 reactor's container damaged: EdanoNote
#
11:43 14 March
BREAKING NEWS: Major radiation leaks unlikely from No. 3 rector: Edano
 

rafter

Since 1999
http://www.cnbc.com/id/42064920

Blast at Stricken Japan Plant, New Tsunami Heads for Coast
Published: Sunday, 13 Mar 2011 | 10:54 PM ET Text Size
By: Reuters


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A hydrogen explosion rocked the earthquake-stricken nuclear plant in Japan where authorities have been working desperately to avert a meltdown, while media said a fresh tsunami was heading for the same coastline that was hit last week.


Source: DigitalGlobe
Earthquake and tsunami damaged Dai Ichi Power Plant in Japan.

Japan's nuclear agency confirmed there was an explosion at the No. 3 reactor of the Daiichi plant in Fukushima, and TV images showed smoke rising from the facility, 240 km (150 miles) north of Tokyo.

Officials said they could not immediately confirm whether the blast had caused a radioactive leak.

Operators had earlier halted injection of sea water into the reactor, resulting in a rise in radiation levels and pressure. The government had warned that an explosion was possible because of the buildup of hydrogen in the building housing the reactor.

Japan battled through the weekend to prevent a nuclear catastrophe and to care for the millions without power or water in its worst crisis since World War Two, after a huge earthquake and tsunami that likely killed more than 10,000 people.

A badly wounded nation has seen whole villages and towns wiped off the map by a wall of water, leaving in its wake an international humanitarian effort of epic proportions.

Kyodo quoted authorities as saying the new tsunami could be up to a height of three meters and issued an alert for the country's Pacific coast, including Fukushima prefecture.

As the country returned to work on Monday, markets began estimating the huge economic cost, with Japanese stocks <.N225> plunging around 5 percent and the yen <JPY=> falling against the dollar.

Prime Minister Naoto Kan said the situation at the crippled Fukushima nuclear plant remained worrisome and that the authorities were doing their utmost to stop damage from spreading.

"The earthquake, tsunami and the nuclear incident have been the biggest crisis Japan has encountered in the 65 years since the end of World War Two," a grim-faced Kan had told a news conference on Sunday.

"We're under scrutiny on whether we, the Japanese people, can overcome this crisis."

Officials confirmed on Sunday that three nuclear reactors north of Tokyo were at risk of overheating, raising fears of an uncontrolled radiation leak.

Engineers worked desperately to cool the fuel rods in the damaged reactors. If they fail, the containers that house the core could melt, or even explode, releasing radioactive material into the atmosphere.

The world's third-biggest economy also faced rolling power blackouts to conserve energy, and Tokyo commuters reported long delays as train companies cut back services.

Death Toll "Above 10,000"

Broadcaster NHK, quoting a police official, said more than 10,000 people may have been killed as the wall of water triggered by Friday's 8.9-magnitude quake surged across the coastline, reducing whole towns to rubble. It was the biggest to have hit the quake-prone country since it started keeping records 140 years ago.

"I would like to believe that there still are survivors," said Masaru Kudo, a soldier dispatched to Rikuzentakata, a nearly flattened town of 24,500 people in far-northern Iwate prefecture.


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Kyodo said 80,000 people had been evacuated from a 20-km (12-mile) radius around the stricken nuclear plant, joining more than 450,000 other evacuees from quake and tsunami-hit areas in the northeast of the main island Honshu.

Almost 2 million households were without power in the freezing north, the government said. There were about 1.4 million without running water.

"I am looking for my parents and my older brother," Yuko Abe, 54, said in tears at an emergency center in Rikuzentakata.

"Seeing the way the area is, I thought that perhaps they did not make it. I also cannot tell my siblings that live away that I am safe, as mobile phones and telephones are not working."

Nuclear Crisis

The most urgent crisis centers on the Fukushima Daiichi nuclear complex, where authorities said they had been forced to vent radioactive steam into the air to relieve reactor pressure.

The complex was rocked by a first explosion on Saturday, which blew the roof off a reactor building. The government had said further blasts would not necessarily damage the reactor vessels.

Operator Tokyo Electric Power said on Monday it had reported a rise in radiation levels at the complex to the government. On Sunday the level had risen slightly above what one is exposed to for a stomach X-ray, the company said.



Authorities had been pouring sea water in two of the reactors at the complex to cool them down.

Nuclear experts said it was probably the first time in the industry's 57-year history that sea water has been used in this way, a sign of how close Japan may be to a major accident.

"Injection of sea water into a core is an extreme measure," Mark Hibbs of the Carnegie Endowment for International Peace. "this is not according to the book."

Chief Cabinet Secretary Yukio Edano said there might have been a partial meltdown of the fuel rods at the No. 1 reactor, where Saturday's blast took place, and there was a risk of an explosion at the building housing the No. 3 reactor, but that it was unlikely to affect the reactor core container.

A Japanese official said 22 people have been confirmed to have suffered radiation contamination and up to 190 may have been exposed. Workers in protective clothing used handheld scanners to check people arriving at evacuation centers.

"Not Another Chernobyl"

The nuclear accident, the worst since Chernobyl in Soviet Ukraine in 1986, sparked criticism that authorities were ill-prepared for such a massive quake and the threat that could pose to the country's nuclear power industry.

Prime Minister Kan on Sunday sought to allay radiation fears: "Radiation has been released in the air, but there are no reports that a large amount was released," Jiji news agency quoted him as saying. "This is fundamentally different from the Chernobyl accident."

Kan said food, water and other necessities such as blankets were being delivered by vehicles but because of damage to roads, authorities were considering air and sea transport.

Thousands spent another freezing night huddled in blankets over heaters in emergency shelters along the northeastern coast, a scene of devastation after the quake sent a 10-meter (33-foot) wave surging through towns and cities in the Miyagi region, including its main coastal city of Sendai.

Economic Impact

The earthquake has forced many firms to suspend production and shares in some of Japan's biggest companies tumbled on Monday, with Toyota dropping around 7 percent. Shares in Australian-listed uranium miners also dived.

Already saddled with debts twice the size of its $5 trillion economy and threatened with credit downgrades, the government is discussing a temporary tax rise to fund relief work.

Analysts expect the economy to suffer a hit in the short-term, then get a boost from reconstruction activity.

"When we talk about natural disasters, we tend to see an initial sharp drop in production ... then you tend to have a V-shaped rebound. But initially everyone underestimates the damage," said Michala Marcussen, head of global economics at Societe Generale.

Ratings agency Moody's said on Sunday the fiscal impact of the earthquake would be temporary and have a limited play on whether it would downgrade Japan's sovereign debt.


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Risk modeling company AIR Worldwide said insured losses from the earthquake could reach nearly $35 billion.

The Bank of Japan has said it would pump cash into the banking system to prevent the disaster from destabilizing markets.

It is also expected to signal its readiness to ease monetary policy further if the damage threatens a fragile economic recovery.

Finance Minister Yoshihiko Noda said authorities were closely watching the yen after the currency initially rallied on expectations of repatriations by insurers and others. The currency later reversed course in volatile trading.

The earthquake was the fifth most powerful to hit the world in the past century. It surpassed the Great Kanto quake of Sept. 1, 1923, which had a magnitude of 7.9 and killed more than 140,000 people in the Tokyo area.

The 1995 Kobe quake killed 6,000 and caused $100 billion in damage, the most expensive natural disaster in history. Economic damage from the 2004 Indian Ocean tsunami was estimated at about $10 billion.

Copyright 2011 Thomson Reuters. Click for restrictions.
 
I just saw a very salient question on another forum...

How many people on Hawaii and the West Coast died from the fallout of Hiroshima and Nagasaki?
 

night driver

ESFP adrift in INTJ sea
You get a mushroom cloud with anything more than 500 pounds of high explosive, or with enough hydrogen.


(ref the vids of Iraqi "Shock n Awe")
 

Catbird

Inactive
Not the best pic but you can see the smoke.
-----------

"@ProducerMatthew
New photo: Screen grab, moment of explosion at Fukushima 1 nuclear power plant - http://t.co/sSDzZGi"


257492601.jpg
 

night driver

ESFP adrift in INTJ sea
I just saw a very salient question on another forum...

How many people on Hawaii and the West Coast died from the fallout of Hiroshima and Nagasaki?

JT, I'm pretty sure the answer is zero.

MOre to the point is the question of how many cancers were caused by it, and I'm pretty sure we don't have THAT data.....

My pediatrician was the first line pediatrician and second line geneticist who went to H & N in 1952 on the tour that the US Gov put together.

His papers were interesting.
 

Catbird

Inactive
Translated from presser.

"bunguman

1. #NHK :JPN Nuke Safety Agency recommend those near 20km evacuation radius of 1st Fukushima PP 2 close windows and do not go outside #jishin_e less than 20 seconds ago via Seesmic Web

2. #NHK : JPN Nuke Safety Agncy: PP worker(s) injured. Specific radiation level & condition of reactor still needs to be confirmed #jishin_e 1 minute ago via Seesmic Web

3. #NHK : JPN Nuke Safety Agency now in press conference #jishin_e 3 minutes ago via Seesmic Web
 

Countrymouse

Country exile in the city
You're right--it is MUCH different---the CNN film I saw earlier was so hazy I couldn't see it well. This looked as though it had orange fire in the very high-rising plume I saw---did others see that as well?

Good Grief---now I'm hearing PC speech run amok--from a representative of the power company---

the latest talking head on CNN is saying that there was "a loud sound" at the plant that "may have been an explosion"....!!!!

(let's not make anyone panic, now!)

http://live.cnn.com/
 

BornFree

Came This Far
7 people missing at plant where explosion occurred per current CNN latest "suit" talking

How does one explain all the smoke before the explosion. Would Hydrogen take the time to just smoke like that before it went boom? I would have thought it would just be an instantaneous event.
 

night driver

ESFP adrift in INTJ sea
How does one explain all the smoke before the explosion. Would Hydrogen take the time to just smoke like that before it went boom? I would have thought it would just be an instantaneous event.

Looked like steam release before the flash of the hydrogen explosion and then the cloud rises.
 

Z28Camaro6D9

Veteran Member
If this was just a similar Hydrogen gas explosion such as the one that occurred yesterday (after which radiation levels were said to have lowered in the vicinity) how come they are now telling people to shelter in place at the outer periphery of the evacuation zone ? And another thing that maybe Dazed or Mickey Mouse can answer: As I understand it, the hydrogen is produced when cold emergency cooling water comes in contact with the super-heated zirconium cladding holding the exposed fuel rods. The reaction is so fast and violent that steam doesn't even have time to form, instead the hydrogen and oxygen molecules are just ripped apart, only to ignite at later time while trapped against the roof of the containment building. This to me would indicate that the emergency cooling is not going as well as planned. Am I missing something ? I understand that the containment vessels may still be intact, but for how much longer ?
 

BornFree

Came This Far
Looked like steam release before the flash of the hydrogen explosion and then the cloud rises.

So what you may be saying is that the steam trapped with the hydrogen suppressed the full explosion until it had pushed a lot of the steam out of the containment building?
 

Catbird

Inactive
#NHK
3 workers injured and 7 missing at Fukushima PP following hydrogen explosion #jishin_e less than a minute ago via Seesmic Web
 

rafter

Since 1999
Per Al Jazeera:

11:40am
The New York Times has reported that experts say radioactive releases could last months.

As the scale of Japan’s nuclear crisis begins to come to light, experts in Japan and the United States say the country is now facing a cascade of accumulating problems that suggest that radioactive releases of steam from the crippled plants could go on for weeks or even months.
 

Jazzdad

Veteran Member
You get a mushroom cloud with anything more than 500 pounds of high explosive, or with enough hydrogen.


(ref the vids of Iraqi "Shock n Awe")

Sure, but there was no mushroom cloud after the explosion of reactor #1. This one was obviously worse. Of course, the reactor vessel might still be intact. The reactor in #1 survived the explosion of that containment building. This one is much worse from an explosive force point of view.
 

Catbird

Inactive
Some good news.

"bunguman

1. #NHK [UPDATED] 7 missing TEPCO workers were found in FUKUSHIMA PP #jishin_e half a minute ago via Seesmic Web "
 

onetimer

Has No Life - Lives on TB
Touruma Shu Uechi
NHK news, the missing 7 people after the 11:10 blast at No.3 reactor were found. #earthquake #tsunami
31 seconds ago
 

TerryK

TB Fanatic
If you look at the youtube video at the 1:00 mark you will see a bright surface flash slightly to the right but definitely at ground level. Then the top of the building erupted with a spherical wave that rolled up high into the air. After about 5 to 10 seconds of going up you could see huge sheets of debri falling out of the sphere heading back down onto the remains of the building. Definitely much more solid matter shot up into the sky compared to the first explosion. Still no word on radiation levels or reactor containment conditions. There definitely is no top on the building any more.
 

Rex Jackson

Has No Life - Lives on TB
Wow

Pumps stopped pumping
Spent rods need cooling
Main rods need cooling but can drop down, as long as cylinder wasn't damged by 2 min of eather shaking
Plant is no longer functional
People exposed to radiation
250,000 people evacuated withing 20 miles of the plants
Plant exploded with Mushroom cloud and reactor parts flying all over the place
Seen the video personally


looks and sounds like a melt down to me, I dont care what anyone says.
 

onetimer

Has No Life - Lives on TB
If the reactor blew it would be 100+ times worse than what we've seen in the youtube videos.
 

Rex Jackson

Has No Life - Lives on TB
""YOU WILL OBEY US, YOU DID NOT SEE A NUCLEAR REACTOR EXPLODING. IT IS AN ILLUSION. ALL IS WELL. GO ABOUT YOUR BUSINESS""
 
D

Dazed

Guest
If this was just a similar Hydrogen gas explosion such as the one that occurred yesterday (after which radiation levels were said to have lowered in the vicinity) how come they are now telling people to shelter in place at the outer periphery of the evacuation zone ? And another thing that maybe Dazed or Mickey Mouse can answer: As I understand it, the hydrogen is produced when cold emergency cooling water comes in contact with the super-heated zirconium cladding holding the exposed fuel rods. The reaction is so fast and violent that steam doesn't even have time to form, instead the hydrogen and oxygen molecules are just ripped apart, only to ignite at later time while trapped against the roof of the containment building. This to me would indicate that the emergency cooling is not going as well as planned. Am I missing something ? I understand that the containment vessels may still be intact, but for how much longer ?

This I am speculating on.

The hydrogen may have been formed earlier on, and when they vented the steam in order to make space for the new water, they had to vent the hydrogen too.

You can't keep adding water to the vessel without letting the air/vapor/steam out, unless you want to let some water out. There is only so much room inside the vessel. You gotta vent something, and I would expect it to be steam so they could condense it as they let pressure out (which would reduce temperature as the pressure decrease lets the water flash to steam letting the steam carry away the heat, leaving room for more water as the pressure went down. But this can lead to a steam explosion as well if ALL the water flashes at once. Its why boiler explosions are usually a small boom followed by a huge one.

Again, this is just speculation.
 

Countrymouse

Country exile in the city
""YOU WILL OBEY US, YOU DID NOT SEE A NUCLEAR REACTOR EXPLODING. IT IS AN ILLUSION. ALL IS WELL. GO ABOUT YOUR BUSINESS""

Did you see what I wrote earlier, when CNN had the power company suit on?

He actually said, "There was a loud sound at the power plant. It may have been something like an explosion."

I swear to god that's what he said.

It would be funny if it wasn't all so awful.
 

Catbird

Inactive
They found the missing but now more injuries.

"REUTERSFLASH

1. Japan chief cabinet secretary Edano: 6 people injured after explosion at Fukushima nuclear plant half a minute ago via web "
 

BV141

Has No Life - Lives on TB
If you look at the youtube video at the 1:00 mark you will see a bright surface flash slightly to the right but definitely at ground level. Then the top of the building erupted with a spherical wave that rolled up high into the air. After about 5 to 10 seconds of going up you could see huge sheets of debri falling out of the sphere heading back down onto the remains of the building. Definitely much more solid matter shot up into the sky compared to the first explosion. Still no word on radiation levels or reactor containment conditions. There definitely is no top on the building any more.

Keep in mind, reactor #1 had a smaller power out put compared to the other 5 reactors at Fukushima Dai-Ichi #1 facility.
Reactor #3, that suffered this 2nd reactor explosion, may simply had much greater hydrogen gas built up that lead to the significantly larger explosion.
 

Hansa44

Justine Case
Wow

Pumps stopped pumping
Spent rods need cooling
Main rods need cooling but can drop down, as long as cylinder wasn't damged by 2 min of eather shaking
Plant is no longer functional
People exposed to radiation
250,000 people evacuated withing 20 miles of the plants
Plant exploded with Mushroom cloud and reactor parts flying all over the place
Seen the video personally


looks and sounds like a melt down to me, I dont care what anyone says.


I saw that too. Those were big parts of something flying all over the place.

Can anybody in the know about these things, say what those parts might be?
 

Catbird

Inactive
From a journo in Tokyo. TBS is Tokyo Broadcasting Service and I'm assuming the "u" in "uSv/h" is in place of the symbol for micro.

"martyn_williams

TBS has a radiation counter in the studio. Says 10 uSv/h is average. Near nuke plant area roughly double after blast 26 minutes ago via TweetDeck "
 
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