Saturday, 26 March 2011

Japan Nuclear Crisis-Scientist sums up argument for immediate entombment.





Hirose Takashi:  The Fukushima Nuclear Power Plant Accident and the State of the Media
Broadcast by Asahi NewStar, 17 March, 20:00
Interviewers: Yoh Sen'ei and Maeda Mari
Yoh:  Today many people saw water being sprayed on the reactors from the air and from the ground, but is this effective?
Hirose:  . . . If you want to cool a reactor down with water, you have to circulate the water inside and carry the heat away, otherwise it has no meaning. So the only solution is to reconnect the electricity.  Otherwise it’s like pouring water on lava.
Yoh:  Reconnect the electricity – that’s to restart the cooling system?
Hirose:  Yes.  The accident was caused by the fact that the tsunami flooded the emergency generators and carried away their fuel tanks.  If that isn’t fixed, there’s no way to recover from this accident.
Yoh: Tepco [Tokyo Electric Power Company, owner/operator of the nuclear plants] says they expect to bring in a high voltage line this evening.
Hirose: Yes, there’s a little bit of hope there.  But what’s worrisome is that a nuclear reactor is not like what the schematic pictures show (shows a graphic picture of a reactor, like those used on TV).  This is just a cartoon.  Here’s what it looks like underneath a reactor container (shows a photograph).  This is the butt end of the reactor.  Take a look.  It’s a forest of switch levers and wires and pipes.  On television these pseudo-scholars come on and give us simple explanations, but they know nothing, those college professors.  Only the engineers know.  This is where water has been poured in.  This maze of pipes is enough to make you dizzy.  Its structure is too wildly complex for us to understand. For a week now they have been pouring water through there.  And it’s salt water, right?  You pour salt water on a hot kiln and what do you think happens?  You get salt. The salt will get into all these valves and cause them to freeze.  They won’t move.  This will be happening everywhere.  So I can’t believe that it’s just a simple matter of you reconnecting the electricity and the water will begin to circulate.  I think any engineer with a little imagination can understand this.  You take a system as unbelievably complex as this and then actually dump water on it from a helicopter – maybe they have some idea of how this could work, but I can’t understand it.
Yoh:  It will take 1300 tons of water to fill the pools that contain the spent fuel rods in reactors 3 and 4.  This morning 30 tons.  Then the Self Defense Forces are to hose in another 30 tons from five trucks.  That’s nowhere near enough, they have to keep it up.  Is this squirting of water from hoses going to change the situation?
Hirose:  In principle, it can’t.  Because even when a reactor is in good shape, it requires constant control to keep the temperature down to where it is barely safe.  Now it’s a complete mess inside, and when I think of the 50 remaining operators, it brings tears to my eyes.  I assume they have been exposed to very large amounts of radiation, and that they have accepted that they face death by staying there.  And how long can they last?  I mean, physically.  That’s what the situation has come to now.  When I see these accounts on television, I want to tell them, “If that’s what you say, then go there and do it yourself!”  Really, they talk this nonsense, trying to reassure everyone, trying to avoid panic.  What we need now is a proper panic.  Because the situation has come to the point where the danger is real. 
If I were Prime Minister Kan, I would order them to do what the Soviet Union did when the Chernobyl reactor blew up, the sarcophagus solution, bury the whole thing under cement, put every cement company in Japan to work, and dump cement over it from the sky.  Because you have to assume the worst case.  Why?  Because in Fukushima there is the Daiichi Plant with six reactors and the Daini Plant with four for a total of ten reactors.  If even one of them develops the worst case, then the workers there must either evacuate the site or stay on and collapse.  So if, for example, one of the reactors at Daiichi goes down, the other five are only a matter of time.  We can’t know in what order they will go, but certainly all of them will go.  And if that happens, Daini isn’t so far away, so probably the reactors there will also go down.  Because I assume that workers will not be able to stay there. 
I’m speaking of the worst case, but the probability is not low.  This is the danger that the world is watching.  Only in Japan is it being hidden.  As you know, of the six reactors at Daiichi, four are in a crisis state.  So even if at one everything goes well and water circulation is restored, the other three could still go down.  Four are in crisis, and for all four to be 100 per cent repaired, I hate to say it, but I am pessimistic.  If so, then to save the people, we have to think about some way to reduce the radiation leakage to the lowest level possible.  Not by spraying water from hoses, like sprinkling water on a desert.  We have to think of all six going down, and the possibility of that happening is not low.  Everyone knows how long it takes a typhoon to pass over Japan; it generally takes about a week.  That is, with a wind speed of two meters per second, it could take about five days for all of Japan to be covered with radiation.  We’re not talking about distances of 20 kilometers or 30 kilometers or 100 kilometers.  It means of course Tokyo, Osaka.  That’s how fast a radioactive cloud could spread. Of course it would depend on the weather; we can’t know in advance how the radiation would be distributed.  It would be nice if the wind would blow toward the sea, but it doesn’t always do that.  Two days ago, on the 15th, it was blowing toward Tokyo.  That’s how it is. . . .
Yoh: Every day the local government is measuring the radioactivity.  All the television stations are saying that while radiation is rising, it is still not high enough to be a danger to health. They compare it to a stomach x-ray, or if it goes up, to a CT scan.  What is the truth of the matter?
Hirose: For example, yesterday.  Around Fukushima Daiichi Station they measured 400 millisieverts – that’s per hour.  With this measurement (Chief Cabinet Secretary) Edano admitted for the first time that there was a danger to health, but he didn’t explain what this means.  All of the information media are at fault here I think.  They are saying stupid things like, why, we are exposed to radiation all the time in our daily life, we get radiation from outer space.  But that’s one millisievert per year.  A year has 365 days, a day has 24 hours; multiply 365 by 24, you get 8760.  Multiply the 400 millisieverts by that, you get 3,500,000 the normal dose.  You call that safe?  And what media have reported this?  None.  They compare it to a CT scan, which is over in an instant; that has nothing to do with it.  The reason radioactivity can be measured is that radioactive material is escaping.  What is dangerous is when that material enters your body and irradiates it from inside.  These industry-mouthpiece scholars come on TV and what to they say?  They say as you move away the radiation is reduced in inverse ratio to the square of the distance.  I want to say the reverse.  Internal irradiation happens when radioactive material is ingested into the body.  What happens?  Say there is a nuclear particle one meter away from you. You breathe it in, it sticks inside your body; the distance between you and it is now at the micron level. One meter is 1000 millimeters, one micron is one thousandth of a millimeter.  That’s a thousand times a thousand: a thousand squared.  That’s the real meaning of “inverse ratio of the square of the distance.”  Radiation exposure is increased by a factor of a trillion.  Inhaling even the tiniest particle, that’s the danger.
Yoh:  So making comparisons with X-rays and CT scans has no meaning.  Because you can breathe in radioactive material.
Hirose:  That’s right.  When it enters your body, there’s no telling where it will go.  The biggest danger is women, especially pregnant women, and little children.  Now they’re talking about iodine and cesium, but that’s only part of it, they’re not using the proper detection instruments.  What they call monitoring means only measuring the amount of radiation in the air.  Their instruments don’t eat.  What they measure has no connection with the amount of radioactive material. . . .
Yoh:  So damage from radioactive rays and damage from radioactive material are not the same.
Hirose:  If you ask, are any radioactive rays from the Fukushima Nuclear Station here in this studio, the answer will be no.  But radioactive particles are carried here by the air.  When the core begins to melt down, elements inside like iodine turn to gas.  It rises to the top, so if there is any crevice it escapes outside.
Yoh:  Is there any way to detect this?
Hirose: I was told by a newspaper reporter that now Tepco is not in shape even to do regular monitoring.  They just take an occasional measurement, and that becomes the basis of Edano’s statements.  You have to take constant measurements, but they are not able to do that.  And you need to investigate just what is escaping, and how much.  That requires very sophisticated measuring instruments.  You can’t do it just by keeping a monitoring post.  It’s no good just to measure the level of radiation in the air.  Whiz in by car, take a measurement, it’s high, it’s low – that’s not the point.  We need to know what kind of radioactive materials are escaping, and where they are going – they don’t have a system in place for doing that now.

Decontamination Threshold Raised From 6000cpm to 100000cpm

NISA announces that decontamination threshold has been raised: http://www.nisa.meti.go.jp/english/files/en20110325-5-1.pdf

NISA releases radioactive contamination results of water from Unit #1

http://www.nisa.meti.go.jp/english/files/en20110325-6.pdf

Friday, 25 March 2011

JAIF: "working condition in high radiation area is so bad and there is no prospect of accomplishing the work for this recovery"

Latest JAIF report: http://www.jaif.or.jp/english/news_images/pdf/ENGNEWS01_1301116660P.pdf

Evidence says Japan nuclear meltdown will surpass Chernobyl.

The science is simple. Nuclear fuel rods will heat up, melt, and then burn if they are not cooled.

Examination of the heat, pressure and radiation data from Fukushima tells us the worst. Efforts to cool the nuclear fuel with sea water have compounded the already difficult problem of cooling the tonnes of nuclear fuel in the shattered plant. The salt buildup created virtually guarantees that large areas of the fuel are now unreachable by circulating water. A little progress has been made in cooling some areas, but fuel in many areas is receiving little or no cooling.

Fuel rods are melting at a number of locations at the plant. Many of these rods are receiving no cooling. They do not appear to be burning much yet, but they will be soon. Once rods start burning, radiation release at the site will become so lethal that all further effort to cool the fuel will stop. More fuel will burn, radiation levels will rise, and so on in a vicious loop.

The Japanese Government has still not admitted to the seriousness of the problem. I feel that the problem is so large that they can see no rational solution. The Entire country of Japan is in dire peril. To a lesser extent, the entire world.

A significant percentage the nuclear fuel on-site is at risk of melting and burning. This includes the common spent fuel pond and perhaps worst, the tonnes of plutonium in Unit #3. Once the plutonium starts burning it will leave a trail of uninhabitable death in whichever direction the wind blows and the water flows.

If you can leave Japan, I would recommend doing so now before it becomes impossible.

I dislike alarmists, and know I must sound like one, but the evidence is clear. I have no agenda. I have just looked at the data and science that is available to us all. I have provided most of the important links earlier in my blog, but it is not that hard to find the data any longer. The radioactive elements being released prove fuel is melting. The data shows that a number of locations at the plant have fuel that is continuing to heat. Burning is inevitable.

When the fuel seriously starts to burn, black smoke will start to rise in earnest. This smoke will be roughly equivalent to that released at Chernobyl (without graphite), but will continue and grow in quantity and radioactivity as more fuel burns. This event will not blow itself apart and become less dangerous as at Chernobyl. It will continue and grow. When the fuel in Unit #3 starts burning it will mark just the beginning of the single most catastrophic event humankind has brought on itself so far. The idea of the common spent fuel pond burning is so terrible I cannot comment sensibly on it.

Melting fuel can accumulate into a critical mass.

It is probable that we will see a lot more black smoke soon. Probably in the next 48hrs. At some point after that, we will probably see more explosions, some hydrogen, and probably some nuclear. One or more small criticalites are again horrible to contemplate, but are possible if not probable. If and when they happen, especially in Unit #3, a massive release of radioactive materials, dust, and particles will occur.

Once again, I hope the brave workers perform a miracle and save the plant. Unfortunately the data and science say that this is doubtful.

Once again, If you can leave Japan, I would recommend doing so now before it becomes impossible.

AaronC

Monday, 21 March 2011

Japan Nuclear Crisis-Evidence Clear-Meltdowns Continue-Government Minimizes

It is no longer hard to find the evidence. The links that I found over the last few days and newer information such as the radioactive composition of releases from Fukushima, radiation maps of japan, food contamination, etc seem conclusive enough to me. The battle to stop the meltdowns was lost days ago. TEPCO and the Japanese Government continue to minimize and paint the most optimistic face on everything.

The situation at Fukushima is beyond critical. Firetrucks and water bombing have little chance of cooling shattered pools, and no chance of cooling melting cores. Radiation levels on-site are rising above lethal levels. Unit #3 will soon make the entire plant uninhabitable when its core starts spewing plutonium.

Japan must immediately get its head out of the sand. The sky IS falling. Everything up to and including the meltdown of #1 through #6 AND the massive exterior used fuel storage pool is possible, if not probable. Criticalities (small nuclear explosions) are a real possibility especially in unit #3.

Japan and the world is now faced with coming up with a way to cool an entire 6 reactor facility which will be too radioactive for humans to work on without massive protection.

The first part of this solution is to stop pretending the problem can be fixed at all, at least in the short term.

The evacuation area must be expanded immediately. Japan must enlist the help of the world to plan and execute the largest cooling and containment effort in our history.

AaronC

Japan Nuclear Crisis-Radiation spikes for third time.

Reading of environmental radioactivity level by prefecture, Time series data(Graph)(English version)

Take note of Fukushima and Ibaraki Prefectures. We see larger spikes corresponding to explosions at unit #1 and unit #3, and a new, smaller spike corresponding with gray smoke and evacuation from #3 (maybe 2).

This data also shows that many areas now receive more than a normal years worth of radiation every 24hrs.

AaronC