Jump to content
BANGKOK
Sign in to follow this  
george

Meltdown Likely Under Way At Japan Nuclear Reactor

Recommended Posts

Japan is a "hi-tech" well organised country, that has spent a lot of time, thought and money on dealing with earthquakes....

Imagine if this happened in another country with nuclear power plants!

I feel sad for Japan but like you said we all should be glad it happened there.We are in the best of hands and lets hope it will not be another Chernobyl.

Even with the best organisation and planning and foresight things still can go wrong. This will be also a setback for all countries to try to shake away from the dependents on oil.

The future is at stake here too.Very sad to say the least.

Share this post


Link to post
Share on other sites

BangkokEddy, there's been no indication made publicly that a complete meltdown has occurred at the Daichi No. 1 reactor..

That is true, i was referring to "news" by elcent posted yesterday:

that's what I wished for, but unfortunately authorities have confirmed a meltdown according to German TV station ARD.

that is 100% false.

Came from the same elcent who said: " obfuscating by deliberately confusing the order of events - a fine Japanese tradition by the way,"

There is an accident in a nuclear power plant after one of the strongest EQ ever recorded. We don't know yet how worse the accident actually is.

Some concerned anoraks with beards using the situation to propagate their "clean" green energy.

and some really disturbed minds using it to add hatemongering to scaremongering and telling "jokes" that should have no place in this topic.

:lol: In Thailand they would send an army with pat-loms (fans) to defend against nuclear radiation leakage, not to forget to consult the ghosts and fortune tellers. :lol:

Share this post


Link to post
Share on other sites

Evacuations update from NHK. Not sure why these #s are quite lower than the 200,000+ ones used earlier.

The earlier numbers came from the central govt., whereas these apparently are from the local prefectural officials:

Evacuation advised for 80,0000 near nuclear plants

Fukushima prefectural government says on Sunday 70,000 to 80,000 people living near the Fukushima No.1 and No.2 Nuclear Plants are subject to an evacuation advisory.

They live in 10 cities and towns near the nuclear plants including Minamisouma-city, Tamura-city, and 8 towns.

About 62,000 people are confirmed to have already evacuated.

The prefectural authorities plan to help evacuate those remaining in the area.

Sunday, March 13, 2011 16:35 +0900 (JST)

http://www3.nhk.or.j...lish/13_25.html

Edited by jfchandler

Share this post


Link to post
Share on other sites

So does 1,204 microsieverts per hour radiation mean it was 1.2 sieverts per hour???

That would be 1.2 milliSieverts or .0012 Sv/hour. 1.2 Sieverts/hour would be massive.

Share this post


Link to post
Share on other sites

There are no alternatives currently. Our world needs energy to go forward. To go forward with medicine, all kind of nice things like the internet, taveling etc... nothing happens without energy.

Well, there is an option of burning coal. To understand what that means, you can go to visit some Chinese cities and ask when was the last time they saw blue sky. Or perhaps on what decade it happened.

The last nuclear plant accident was 1986. That is 25 year ago! The death toll for Chernobyl and this Japan accident has been less than people die in the traffic accidents in one year her in LOS.

Nuclear science is more challenging for the mind and therefore might scare some people. It's not that bad at all.

incorrect - a minute bit of research would so you how wrong you are. You make far too many assumptions about both the production of and future needs for energy.

Agreed with Deerai

I agree with oilinki. It seems he had thought a little bit deeper and definitely longer than the one minute some anti-nuclear scaremongers spend in google to gain 'knowledge' about the subject.

There are alternatives and they work now, the difference is cost effectiveness vs risk aversion.

Coal is not a future alternative, it is the past and we need to look ahead not backwards.

To say that Chernoble was only 25 years ago is a red herring

the damage from Chernoble is ongoing today 25 years later.

Share this post


Link to post
Share on other sites

BangkokEddy, there's been no indication made publicly that a complete meltdown has occurred at the Daichi No. 1 reactor..

That is true, i was referring to "news" by elcent posted yesterday:

that's what I wished for, but unfortunately authorities have confirmed a meltdown according to German TV station ARD.

that is 100% false.

Came from the same elcent who said: " obfuscating by deliberately confusing the order of events - a fine Japanese tradition by the way,"

There is an accident in a nuclear power plant after one of the strongest EQ ever recorded. We don't know yet how worse the accident actually is.

Some concerned anoraks with beards using the situation to propagate their "clean" green energy.

and some really disturbed minds using it to add hatemongering to scaremongering and telling "jokes" that should have no place in this topic.

:lol: In Thailand they would send an army with pat-loms (fans) to defend against nuclear radiation leakage, not to forget to consult the ghosts and fortune tellers. :lol:

The Japanese saying they are planing to evacuate 80,000+ people doesn't sound like

"Some concerned anoraks with beards using the situation to propagate their "clean" green energy."

Many people are quite informed on all of these subjects, and this is just an actualization of some of our worst fears.

Make it seem LESS than it is, by trite sarcastic commentary to make is seem lesser is not making your case in any way.

It does make it look like YOU have an agenda, not the inverse.

And our first priority here is to keep an eye on what is happening today in real time in japan now, and how it will affect us as well as the suffering Japanese people.

Edited by animatic

Share this post


Link to post
Share on other sites

I'm afraid that this nuclear emergency is unfolding very much like all of the preceeding nuclear catastrophies, ( Three Mile Island, Chernobyl). The operators and the govt. acting in concert to obfisscate, mislead, and confuse what the whole world can obviously see. The beginning of a total, uncontrolled meltdown, and another display of human error causing the sickness and death of other humans and environment on a grand scale. All to" save face".

First the Japanese operators say there is no serious risk of radiation, but evacuate over 200,000 people anyway. Then they say they have the situation under control, right before they blow the roof off the building.Now we find out that indeed significant amounts of radiation have not only been released, but 19 people have been radiated. And still they continue to downplay the situation. The amount of cowardice, thoughtlessness, and lack of responsibility would be comical if it were not so sickening.

Just now on the news, they are saying that no3 reactor is now in meltdown, in addition to no 1 reactor. If they had been more upfront and responsive in the beginning, backup generators could be helicoptered in and in place by now. The whole U.S seventh fleet is less than an hour away, for Gods sake! They could park a nuclear powered sub right off the coast and connect up to the grid and fire up the entire prefecture if they would just think ahead.God help anyone downwind from these idiots.

Share this post


Link to post
Share on other sites
[3:46 a.m. ET, 4:46 p.m. Tokyo] A second explosion could occur at an earthquake-struck nuclear plant in northeastern Japan, a government official told reporters Sunday. Chief Cabinet Secretary Yukio Edano said an explosion could occur in the buliding housing the No. 3 reactor at the Fukushima Daiichi plant.

http://news.blogs.cnn.com/2011/03/13/japan-quake-live-blog-nine-people-test-positive-for-high-radiation-levels/

Share this post


Link to post
Share on other sites

Power outages coming... says Kyodo News:

Kaieda warns of massive electricity shortage following quake TOKYO, March 13, Kyodo

Japan's eastern and northeastern areas may fall into an ''abnormal'' situation involving a shortage in electricity supply in the wake of Friday's powerful earthquake that hit Japan and crippled nuclear power plants in the northeast, industry minister Banri Kaieda said Sunday, while calling for preventive measures.

To avoid massive blackouts in the areas, Kaieda and an energy agency official said that Tokyo Electric Power Co. and Tohoku Electric Power Co. may implement planned power outages in their service areas as early as Monday, with the step likely to last more than several weeks.

''As companies and others will start economic activities...from tomorrow and afterward, there is a high possibility that the service areas of Tokyo Electric and Tohoku Electric will face an abnormal situation in which a great deal of supply shortage will occur,'' the economy, trade and industry minister said, adding that the government has urged large companies to limit electricity use.

''But if a great supply shortage is expected even if we take such measures (to limit the use), there is a possibility that Tokyo Electric and Tohoku Electric will implement planned power outages,'' Kaieda told a press conference in Tokyo.

He also said the government and utility companies will take every possible measure to minimize the impact of any planned outage on people's lives.

Tetsuhiro Hosono, head of the Natural Resources and Energy Agency, said the power suspension, if implemented, may last ''more than several weeks'' and that it may start from Monday.

http://english.kyodonews.jp/news/2011/03/77350.html

Share this post


Link to post
Share on other sites

Off topic/argumentative posts have been removed after my caution. Further such posts will be removed without notice. Continuing to do so will have consequences.

Share this post


Link to post
Share on other sites

And an update on the Daichi No. 3 plant from Kyodo News...

Highlights below... Full article link beneath. Reactor No. 3 now officially toast.

Sea water injected into troubled Fukushima [No. 3] power plant TOKYO, March 13, Kyodo

Japanese authorities scrambled Sunday to control overheating reactors at the troubled Fukushima No. 1 [Daichi] nuclear power plant, injecting sea water into them and reducing the pressure inside, top government spokesman Yukio Edano said.

While acknowledging that the core of the No. 3 reactor at the plant may have been deformed due to overheating, the chief Cabinet secretary denied it has led to a ''meltdown,'' a critical situation where fuel rods have melted.

Edano warned, however, that a hydrogen explosion similar to one that occurred at the No. 1 reactor at the same facility nearby on Saturday could occur at the No. 3 reactor because large amounts of hydrogen were created when the water injection procedure briefly ran into trouble.

The plant's operator, Tokyo Electric Power Co., began injecting fresh water into the reactor to deal with the problem that the tops of MOX fuel rods were 3 meters above the water in the reactor following a magnitude 9.0 earthquake which hit northeastern and eastern Japan on Friday.

But it began injecting sea water after trouble developed with a fresh water pump, a step that will lead to the reactor's dismantlement.

Radiation around the reactor measured 1,557 micro sievert at 1:52 p.m., Edano said, adding the figure went down to 184 about 50 minutes later. He dismissed concerns that the radiation level would affect human health.

Meanwhile, radiation monitored at the Onagawa nuclear power plant in Miyagi Prefecture on the Pacific coast shot up on Sunday, Tohoku Electric Power Co. said, adding that it was likely caused by radioactive substances let out at the troubled Fukushima No. 1 nuclear power plant in Fukushima Prefecture.

Radiation levels were very low but about 400 times as high as in normal times, the power supplier said, dismissing the possibility that the Miyagi plant was to blame.

MORE: http://english.kyodonews.jp/news/2011/03/77339.html

Share this post


Link to post
Share on other sites

There is no such thing as a partial Meltdown, Once the Meltdown has begun due to loss of coolant there is virtually no way to stop it. Read the 'China Syndrome"

If they try to cool it with Sea Water their will be a massive explosion as the Sea Water is immediately converted to steam causing a massive realease of Radioactive material including Plutonium the most toxic substance known.

Yes this is chernobyl all over again but located in one of the most densely popuulated places in the world. The Radiation exposure will affect millions.

Share this post


Link to post
Share on other sites

BTW, I believe I've seen reference to this, but it's not been addressed in a very direct way...

At Fukushima Daichi 1 reactor, once they started pumping sea water into the containment area, I'm under the impression that means that particular reactor is toast... or... to put it more scientifically...would be unable to be returned to service in the future. It's done. Never operate again...

It is interesting to note tha Fukushima Daichi 1 was initially commissioned on 26 March 1971 and was scheduled to be shut down on it's 40th birthday on 26 March 2011. So it was probably an easy decision to sacrifice the unit in an attempt to prevent a complete meltdown. However, that's not the same case with Unit 3, which still had several more years of life left, until they injected the sea water into the reactor.

Edited by boldfj

Share this post


Link to post
Share on other sites

There is no such thing as a partial Meltdown, Once the Meltdown has begun due to loss of coolant there is virtually no way to stop it. Read the 'China Syndrome"

Too much science fiction out there. ;)

The China Syndrome is a hypothetical idea of an extreme result of a nuclear meltdown in which molten reactor core products breach the barriers below them and flow downwards through the floor of the containment building. The origin of the phrase is the fictional idea that molten material from an American reactor could melt through the crust of the Earth and reach China.[1]

The 'China Syndrome' refers to the most drastically severe meltdown a nuclear reactor could possibly achieve. In this case, the reactor would reach the highest level of supercriticality for a sustained period of time, resulting in the melting of its support infrastructure. The uranium in the core would behave in a similar manner to a delta-class fire, self-sustaining temperatures in excess of 2000°C. Since these temperatures would melt all materials around it, the reactor would sink due to gravity, effectively boring a hole through the reactor compartment's floor.

China Syndrome

Two meltdowns occurred at American civil nuclear power plants:

1. The partial meltdown at the Fermi 1 experimental fast breeder reactor required the reactor to be repaired, though it never achieved full operation afterward.

2. The Three Mile Island accident, referred to in the press as a "partial core melt",[3] led to the permanent shutdown of that reactor.

Nuclear Meltdown

A partial can be stopped when proper cooling is supplied. A partial refers to portions of the exposed rods being exposed. It is not necessarily a runaway action.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...