Curiouser and Curiouser …. the podcast. This is part one of three planned discussions with Theo Theofanous.
Tag Archives: Japan Disaster
Japan quake, tsunami, nuke news 14: Waiting for the other shoe to drop
The experts monitoring and reporting on the Fukushima nuclear disaster have, for several days now, stopped talking about melting reactor fuel or breached containment vessels. The International Atomic Energy Agency, the Energy Collective, and other groups now merely pass along information about pressure and temperature and make a note here and there about water being sprayed on something or not sprayed on something. They have not stopped talking about melting overheated fuel because they have determined that there isn’t any. They stopped talking about it because there isn’t anything to say. Reactors have melted down, the meltdown is still in process, and while everyone waits for the other shoe to drop … something more out of control than they have now, which hopefully will not happen … they talk about pressure gages and tonnes of water and temperature readings. Have you ever watched someone who is quite ill die over a period of days or weeks? This is often how it goes. You stop talking about fixing the damaged heart or repairing the useless lungs or shrinking the growing tumor, and if you talk about anything medical at all, it’s the dials and widgets attached to chrome rods and racks and draped with cables and tubes, flashing, beeping, oscillating behind the unconscious patient. This is how Fukushima looks to me today.
Continue reading Japan quake, tsunami, nuke news 14: Waiting for the other shoe to drop
Japan quake, tsunami, nuke news 13: When in doubt, throw a towel on it.
As I tune in to NHK live TV, and see the piece on using Twitter to aid in disaster relief being shown for the 20th time over the last 48 hours, I wonder about what appears to be a sudden and dramatic drop in the level of coverage of the Fukushima nuclear power plant disaster. Over the last several days, the IAEA has stopped bothering to note that cooling systems are still not working and have shifted their attention to monitoring the rising radiation levels outside the plant on both land and sea. Meanwhile, TEPCO engineers are speaking of covering the reactor plant with a big blanket of some kind while reasonably credible sources (i.e., those involved in building the plant) seem increasingly convinced that one reactor’s core has breached its containment vessel.
We have mainly been simply reporting what the Internet has been saying, what the Japanese news has been saying, and what the International Atomic Energy Agency has been saying. This is interesting because Ana’s feed is live and catches with its currency and all the quirks and foibles along with the news, the Internet is a diversity of reaction delayed by hours, and the IAEA response is at least a day behind, measured, and we presume most accurate.
And, of course, we have been told to quiet down in a number of ways by a number of people. First we were told to quiet down because there really could not be a disaster here. Radiation could not really escape at serious levels. The buildings that exploded were not really needed. They are supposed to explode, so it is no big deal. The containment vessel is so solid that nothing can get out of it. Anyway, the Tsunami is the real disaster. Automobile deaths are the real problem. Food poisoning is where we should be focusing our attention. And, most recently, asking questions about what is happening during a very current and very real nuclear power plant disaster is offensive to the hard working people who are in danger at the plant.
We are not amused with the screeching monkeys.
Here’s what we’ve got:
Continue reading Japan quake, tsunami, nuke news 13: When in doubt, throw a towel on it.
Has Fukushima Daiichi Reactor 2 Core Melted Down?
It is said that it is physically impossible for the nuclear material in any of the Fukushima reactors to melt through the containment vessels. Despite a rumor of a crack in one of the vessels, nuclear power experts have maintained that it is impossible that there could be such a crack. Nonetheless, a US based GE-connected nuclear engineered who has ties to the Fukushima facility has boldly asserted that he thinks that the core in reactor 2 has “melted through the bottom of the pressure vessel … and at least some of it is down on the floor of the drywell.”
Richard Lahey was head of safety research for this kind of reactor for GE at the time that they installed the units at Fukushima. He has told his analysis to The Guardian. You can read it here.
NHK news service has not mentioned this, nor has the International Atomic Energy Agency. This is utterly unconfirmed and probably not true. It is, after all, impossible.
But if it is true, this places the situation at Fukushima on the high side of the TMI tickmark on the scale of badosity. The core at Three Mile island got all messed up but it did not breach its containment.
Japan quake, tsunami, nuke news 12: Engineers discover giant trench filled with radioactive water; Plutonium in nearby soil?
The most interesting and important current news, interesting if confirmed, is that plutonium has been discovered in soil near Fukushima. With all this talk about radiation, it is easy to forget that some of these elements are extremely poisonous in their own right. Plutonium is a very nasty poison. I’ve not seen the news reports or any details yet … as of this writing, this is just reasonably reliable rumor. I’m off the intertubes for the rest of the day, but I’ll update tomorrow on this topic.
The cooling systems are still not operational and a huge amount of radioactive water has been found in a trench that communicates with the reactor/turbine complex that either TEPCO was unaware of the existence of, did not think to look in, or has known of but remained silent about since March 11th. I’m not sure which is worse, a zillion gazillimsuts of extra radioactive dihydrogen oxide they didn’t know about, their ability to selectively not mention very important things for very long periods of time, or the astonishing incompetence demonstrated by ignorance. I guess we’ll find out eventually.
Now, on to Ana’s feed:
Ana’s Feed starting at about 10 after midnight, today, March 28:
Re: reactor no.4, from video evidence – The crane has fallen onto the spent fuel rods – “the likelihood of damage to the fuel cannot be denied.” Also, the yellow lid of the containment vessel can be seen … off to the side … there was no fuel in the reactor at the time of the quake. (NHK)
- Clarification: There was no fuel in the reactor CORE at the time of the quake. It had all been moved upstairs to the spent fuel pool which is now crushed by crane
- Seawater continues to be pumped by truck onto the spent fuel area – white steam/vapor continues to rise.
- (this entry slightly edited to reflect later corrections)
The plan to pump highly contaminated water from the turbine rooms into the condenser units for storage has hit a snag in that the condenser units are full. The next plan of moving the water from cond. units to “outside pools” has also been challenged by the fact that these pools are also full. -NISA
Some residents with homes inside the 20km evac. zone have left shelters and returned. Officials believe there are about 30 people in violation of the order, but given the danger in the area, no one has gone in to check. SDF forces may be mobilized to extract them forcibly. (NHK)
TEPCO has sent soil samples taken from around the plant on March 22 to independent research centers where they will be checked for highly toxic plutonium. Results are expected in the next days. (NHK)
Edano on reactor no.2: It is possible that the water inside the pressure vessel has come into contact with melted elements. That is a possibility. (NHK)
- Q: Does the fuel continue to melt?
- A (Edano): NISA will give an expert report.
- Analiese Miller Gauge-topping readings of 1,000mSv/hr. are confined to the interior of the no.2 building. There is concern about this material seeping into groundwater. (Edano presser)
- My understanding is that entombment is not an option so long as the fuel has heat – that doing so would only increase the likelihood of nuclear explosion – that, in fact, it has been the “controlled venting” of the reactors that has kept them more or less intact to this point. I haven’t heard anything about this rationale from Michio – haven’t heard him acknowledge that concern.
Is it possible, given that soil samples have been sent off-site, that the equipment in use at Daiichi does not allow for detection of the weak gamma-ray emissions of plutonium? Someone tell me this is not a possibility.
I-131 found at levels 1,150 times normal in the sea, 30m N. of discharge pipes of units 5 and 6.
- NISA spokesman says: Generally speaking, the current here moves N. to S., but the sample was taken near shore, so maybe those currents don’t hold. The assumption is that the contamination moved along the shore from S. to N., but that is not certain.
“Highly radioactive water has been found outside the reactor building.” (NHK)
- There is a pipe-lined, underground trench running horizontally from reactor no.1 – no.3, at about 16m deep. The pipes in this trench can be observed by workers on the ground through a manhole. Workers have looked into this manhole and have seen water. It has nearly filled the observation column to the surface, and is of the same radioactivity as found in the adjacent turbine room of reactor no.2, 1,000mSv/hr. (NHK analyst)
- (When talking 1,000mSv/hr., we’re talking more than that – apparently no one’s got a dosimeter that can read anything higher.)
- TEPCO says that the trench does not directly connect to the sea.
- see this
As of 16:00 March 28, 2011 – some very high readings outside the evac. zone.
(Ana’s Feed is a collection of Analiese Miller’s facebook status entries posted as she takes in the news live in Japan.)
Links to news stories and updates:
- Woes deepen over radioactive water at nuke plant, sea contamination
- Radiation In Seawater May Be Spreading In Japan
- Tokyo Shares End Down As Nuclear Crisis Drags On; Tepco At 31-Yr Low
- Nuclear industry touts safety of new reactors
- Fukushima’s Cooling Efforts Are Delayed by Spilled Water
- U.S. Barge Cools Nuclear Plant in Japan
- Crisis In Japan: Radiation Detected In Seawater; Frustration Grows
- Temperatures rising in reactor one at Fukushima Daiichi plant
- Japan fears nuclear fuel rod meltdown at Fukushima
- More Radioactive Substances Found in Seawater Near Fukushima Nuke Plant
- Japan’s death toll from tsunami over 10,000
- Japan Update 3/27: Death Toll Passes 10,500 – Nuclear Emergency Worsens
- How I learned to stop worrying and love nuclear power
- High-level radiation detected in trench outside Fukushima reactor building
International Atomic Energy Agency update edited for brevity. See this link for the rest, and for radiation monitoring information.
The situation at the Fukushima Daiichi plant remains very serious.
The restoration of off-site power continues and lighting is now available in the central control rooms of Units 1, 2 and 3. Also, fresh water is now being injected into the Reactor Pressure Vessels (RPVs) of all three Units.
Radiation measurements in the containment vessels and suppression chambers of Units 1, 2 and 3 continued to decrease. White “smoke” continued to be emitted from Units 1 to 4.
Pressure in the RPV showed a slight increase at Unit 1 and was stable at Units 2 and 3, possibly indicating that there has been no major breach in the pressure vessels.
At Unit 1, the temperature measured at the bottom of the RPV fell slightly to 142 °C. At Unit 2, the temperature at the bottom of the RPV fell to 97 °C from 100 °C reported in the Update provided yesterday. Pumping of water from the turbine hall basement to the condenser is in progress with a view to allowing power restoration activities to continue.
At Unit 3, plans are being made to pump water from the turbine building to the main condenser but the method has not yet been decided. This should reduce the radiation levels in the turbine building and reduce the risk of contamination of workers in the turbine building restoring equipment.
No notable change http://scienceblogs.com/gregladen/2011/03/japan_quake_tsunami_nuke_news_5.phphas been reported in the condition of Unit 4.
Water is still being added to the spent fuel pools of Units 1 to 4 and efforts continue to restore normal cooling functions.
Units 5 and 6 remain in cold shutdown.
We understand that three workers who suffered contamination are still under observation in hospital.
For more information and essays about the Earthquake, Tsunami and Nuclear Reactor problems in Japan CLICK HERE.
Japan quake, tsunami, nuke news 11 … overnight spike was false reading?
Sea water has now been replaced with fresh water for cooling reactors, and, apparently, spent fuel storage pools. Work continues on restoring power and repairing cooling systems, but the cooling systems remain unrepaired. An interesting development overnight (overday in Japan): A very high radiation reading in Reactor 2 showed what apparently was high enough radiation to cause workers to immediately evacuate, as well as a high enough rate of short-lived radioactive isotope to make it a certainty that fission was happening, if not currently, within the previous few hours, and that radioactive stuff was leaking, according to the engineers, from the core.
Then, later, it was determined that the reading was a mistake. The person who took the reading ran away the moment the reading showed this high level. That may be because the workers who were injured in the radioactive “puddles” in Reactor 3 suffered those injuries in part because they did not believe the high readings they were getting. Policies and procedures were updated, we were told, so that would not happen again.
In the case of last night’s reading, however, it is normal that a second reading would be taken, but that did not happen because the first reading was so astoundingly high that, apparently, running away seemed to be the best thing to do.
At present, we don’t have any reports of new readings that are lower than the very high reading taken some time ago. What we have is the engineers deciding that the very high reading was too high to be believed. I’m not sure how to interpret that. Probably, it was just a bad reading.
Now that you have the necessary background, I give you Ana’s Feed and the usual links to recent news reports and commentary, as well as the International Atomic Energy Agency’s (IAEA) update. Ana is asleep right now, and has not heard about the retraction of the high reading.
Continue reading Japan quake, tsunami, nuke news 11 … overnight spike was false reading?
The Crack at Fukushima Reactor 3, and other matters
A crack in the containment vessel of Fukashima Reactor 3 has been mentioned by MSNBC and ABC news, citing the New York Times. The New York Times has an article in which the crack is mentioned in a side bar, attributed to an anonymous person. An anonymous source is not particularly impressive, but the New York Time is. So I suppose this is somewhat impressive.
Various news sources are reporting an actual quote from the anonymous source and say a little more about him. This is what is being reported:
Continue reading The Crack at Fukushima Reactor 3, and other matters
Japan quake, tsunami, nuke news 10 … Tickling the Dragon’s Tail?
This is a particularly important update. An anonymous source in Japan has told reporters connected to the New York Times that there is a visible crack in the Fukushima Reactor 3. This is the reactor that showed isotopic evidence of a leak of some kind. Arguments had been made that a hole in the reactor vessel was an impossibility. The increasingly convincing evidence of a leak led people to admit, or realize, that the reactor vessel already has holes in it … those designed to allow pipes and such in and out of the large thick-walled metal object. It was then presumed that this is where leakage was happening, and that remains a distinct possibility. This presumption was based on the repeatedly stated impossibility of the reactor vessel being burned or corroded through.
But now we have evidence of a visible crack. A crack is a whole nuther matter. If there truly is a crack and the crack is through-and-through and allowing leakage, the we may be observing an excellent and disturbing example of how nuclear accidents often play out, and, in fact, why they happen to begin with. There have been repeated arguments made, in the press, on this blog (in comments), and elsewhere that there is no way that even melted down nuclear stuff inside the reactor vessel could eat its way through that vessel. Then a concession was made for pipe-holes. In the end, however, eating through the vessel or corroded or melted pipes may not be the point. Cracking the vessel then leaking out may be a possibility. Hadn’t been considered before.
There is isotopic evidence that the material leaking out of Reactor 3 is in part the product of fission that has occurred since shutdown of the machine at the time of the earthquake. This is not confirmed and there may be other explanations. But, if that is true, this probably means that fuel pellets have come free of their containment in fuel rods and accumulated somewhere in the reactor vessel in sufficient density to cause a chain reaction. If this has happened, it is probably not that severe of a chain reaction (or we would see more heat and other bad things). But, if there are fuel rods that have fallen apart, this means that future movement or pressure changes or other effects in the vessel could be more dangerous. Under some scenarios, just adding water can cause a brittle corroded fuel rod to fall apart, dropping more pellets into an accumulating pile of pellets lower down in the vessel.
Put metaphorically, the concentration of radioactive material in a mass that is increasingly close to that necessary to cause a chain reaction was dubbed, in the early days of nuclear research, “tickling the dragon’s tail.” Researchers, it is said, would move two piles of radioactive stuff closer and closer and measure the increase in radioactive output, in part to determine what a “critical mass” would be for that material. In theory, they would stop just before a high-level reaction occurred. Louis Slotin went to far with this technique in May, 1946 and it killed him.
If the isotopic evidence truly indicates that there has been post-quake fission in the reactor chamber, then this may mean that there is a dragon in there, metaphorically speaking We just have to hope that the Japanese engineers know how to keep the dragon calm.
There are other startling developments including a shakeup in the government. Ana has put together a very interesting feed. Read on:
Continue reading Japan quake, tsunami, nuke news 10 … Tickling the Dragon’s Tail?
There is now little doubt that Fukushima Reactor 3 experienced post-tsunami fission but it is leaking
The water within Reactor Number 3 (where three workers were exposed to high levels of radiation yesterday) is 10,000 times more radioactive than the average water inside a nuclear reactor and contains radioactive iodine that is generated during fission and has a half-life of 8 days. Japanese engineers are pretty sure that this means that fuel rods within the reactor have contributed to fission reactions.
Here’s an important bit: The physical container that holds the fuel rods inside the reactor is very robust and is probably not leaking. However, as you might guess, the reactor container has a number of holes in it for pipes (etc.) that communicate between the inside and outside of the container. The reactor vessel need not be ruptured or broken for stuff to get out. The engineers in Japan think that highly contaminated water probably exited from the reactor containment via these pipes, though they are not sure.
There will be those who will claim that this does not constitute a leak. But it is.
Reactor containers 1 and 2 are also leaking, according to the engineers.
Source: NHK live report. You can also check the IAEA site for updates.
Regarding the workers (from the IAEA site):
Japan quake, tsunami, nuke news 09
Ana’s Feed starting at about 2PM Thursday 24 March:
Finally found some info on that simulation mentioned earlier: “…the model showed that areas where cumulative exposure over 12 days reached 100 millisieverts–the government’s maximum for infants–extended beyond the evacuation zone. A map based on data from the center showed areas that received a cumulative 100 millisieverts extended as far as about 40 kilometers northeast and south from the plant.”
Radiation 10,000 times normal level in water where nuke plant workers irradiated -kyodo news
- 1.3 million Bq of iodine 131. (NHK)
- Workers stood in 15cm of water – TEPCO says the day before, there were no puddles. (NHK)
- Safety agency has instructed TEPCO to revise and review their safety measures. (NHK)
There is very little being reported from Daiichi so far today, but here’s what I’ve gleaned :
- Lights are on in control room no.1. Temps. in the reactor reached 400C degrees. To cool, seawater was added and temp. dropped to 243C, but this increased pressure – the delicate dance of regulating temp. and pressure continues. (NHK)
- High levels of radiation in reactor no.2 are hampering work efforts. (NHK)
- Preparations are still underway to test the pump at reactor no.3. (NHK)
- No word on reactor no.4.
- White steam is seen rising from reactors 1-4. (NHK)
Cesium 137 was detected in mustard spinach in a field near Tokyo – 890Bq/kg (limit is 500). It was grown in a research plot and is not intended for consumption. (NHK)
Reactor vessel of Fukushima plant No. 3 unit may have been damaged: Gov’t panel -kyodo news … “The containment vessel is working to a certain degree” in reactor no.3, but it is leaking. -safety agency
Iodine 131 in water at 18 water purification plants exceeds the limit for infants. (NHK)
Edano: The government encourages those living in the 20-30km radius around the plant to move for easier living. (NHK)
- This statement was followed by something that sounded like there might be a future mandatory evac. order for this area, and perhaps beyond.
- “[1:15 a.m. ET Friday, 2:15 p.m. Friday in Tokyo] A Japanese official described the Fukushima Daiichi nuclear plant crisis as a “difficult” situation, and said the government will provide transportation to those seeking to evacuate with…in 30 kilometers. … Chief Cabinet Secretary Yukio Edano said authorities will provide transportation in response to growing demand among those living between 20-to-30 kilometers hoping to get farther away from the stricken plant.”(cnn live blog)
Police working to provide supplies to those in the evacuation zone have “suffered damages…to themselves.” They have asked for a resupply of uniforms, and for any protective equipment. (NHK)
South Korean water bottlers are diverting product from the domestic market, have amplified production, but still cannot meet Japanese demand. (NHK)
The 2 beta-burned workers have been transferred to the National Institute of Radiological Sciences. (NHK)
In which TEPCO confirms the presence of Zirconium 95 in seawater: http://www.tepco.co.jp/en/press/corp-com/release/betu11_e/images/110324e6.pdf
“It seems that somehow the containment function could have been compromised somewhat.” -safety agency briefing
Pressed by reporters on whether this is the case in all of the first 3, after a consult with men in the wings it is explained that given the reading of 500mSv in No.2 and also high readings in No.1, that similar things could be happening there, though the scale may be different.
Due to the spraying (necessary for avoiding total meltdown), water has accumulated in the basement-level turbine rooms (originally flooded by tsunami). Due to the containment leakages, this water cannot be worked in. On acknowledgement of this situation, a reporter asks “How will you proceed with the work?” The NISA spokesman says, “So far, we have not heard about how to proceed with the work.”
The 3rd contaminated worker, “with an abundance of caution,” has also been sent to hospital.
In the press briefing, the NISA spokesman is very careful to make clear that there is no confirmation of leaks/cracks in the containment, but that even so, “when we look at the composition of the water” it seems to have come form the core (it is more likely to have come from the core than the spent fuel area). Half an hour later, kyodo news reports that there is: No data suggesting No. 3 reactor core cracked: nuke agency
(Ana’s Feed is a collection of Analiese Miller’s facebook status entries posted as she takes in the news live in Japan.)
Links to news stories and updates:
Continue reading Japan quake, tsunami, nuke news 09
Japan quake, tsunami, nuke news 08
Ana’s Feed starting just after midnight 24 March:
“…estimates that 57,000 pounds of salt have accumulated in Reactor No. 1 and 99,000 pounds apiece in Reactors No. 2 and 3, which are larger.” (Editor’s note: This is what I had independently calculated, so it looks right to me)
Ban Ki-moon and IAEA and various governments are going to talk about ways to keep nuclear power safe. (NHK broadcast)
NHK is quoting the recent US poll that shows a decline in public opinion about nuclear power, adding “this means the American people are seriously responding to this situation in Japan.” (NHK)
Work at reactor no.3 has been suspended due to injury – 2 workers were exposed to ~170mSv, developed skin lesions on their feet and have been sent to hospital. (NHK)
The Tokyo metropolitan government is distributing mineral water to families with infants. (NHK)
“The challenges of radiological contamination have made this operation particularly difficult. It has required us to constantly watch the direction of the wind, to be mindful of where our forces are in relation to the Fukushima power plant. It has required us to monitor and decontaminate our aircraft, ships and even our people…”
Links to news stories and updates:
Continue reading Japan quake, tsunami, nuke news 08
I know where I’m eating lunch tomorrow! (Fund Raiser for Japan)
And maybe dinner, too. This will mainly affect our local Twin Cities folk:
Thom Pham and the staffs of Wondrous Azian Kitchen and Thanh Do Restaurant with support from World Class Wines and Joto Sake will host two fundraisers to support the people affected by the Japan Earthquake and Pacific Tsunami.
On Wednesday, March 23rd at Thanh Do and on Thursday, March 24th at Wondrous Azian Kitchen 100% of the sales proceeds for the entire day will be donated to the American Red Cross in support of its disaster relief efforts to help those affected by the earthquake in Japan and Tsunami throughout the Pacific.
Continue reading I know where I’m eating lunch tomorrow! (Fund Raiser for Japan)
Reconsidering Nuclear Energy
Risk, Trust, and the Arrogance of Numbers
…The coal and biofuel safety numbers don’t come with a disclaimer that the greatest number of additional deaths from these fuels are due to indoor use for cooking, not from industrial energy production. Wind and solar energy numbers don’t reflect that these are developing industries, without decades of safety standards behind them. (Including development numbers for nuclear would drastically change the picture there, given that it was a technology born out of war.) None of these numbers include the costs of destruction of ecosystems, displacement, and unrest caused by the exploitation of resources required….
Taiwan: The Reassurance of Nuclear Safety is Not Convincing
Following the Fukushima nuclear accident in Japan, there are calls now for a review of Taiwan’s nuclear energy policy, particularly as a fourth nuclear power plant is now under construction.
Lin Tsung-yao (æ??å®?å ¯), member of the Fourth Nuclear Power Plant Safety Monitoring Committee, has called upon [zh] the Taiwan Power company to do a thorough reevaluation of construction of its fourth nuclear power plant…
Calif. panel weighs nuclear safety after quake
State senators are reviewing whether California’s nuclear power plants and gas pipelines are safe from earthquakes as Japan’s scramble to control its damaged reactors brings up uncomfortable similarities to the nuclear plants on America’s seismically active West Coast.
“Japan has always been a leader in preparedness,” said Sen. Ellen Corbett, the San Leandro Democrat who chairs the Senate Select Committee on Earthquake and Disaster Preparedness, Response and Recovery. “It’s time to revisit the safety of these plants in light of what we have learned from Japan,” she said at a hearing Monday…..
IAEA concerned, lacks info on Japan nuclear plant
VIENNA – The UN atomic agency said on Tuesday it was concerned that it had not received some information from Japan about its stricken nuclear plant, saying the overall situation remained “very serious.”
“We have not received validated information for some time related to the containment integrity of unit 1. So we are concerned that we do not know its exact status,” Graham Andrew, a senior official of the International Atomic Energy Agency (IAEA), told a news conference.
If Chernobyl is as bad as it gets, then GIVE ME MORE! The Annotated Version
With the current nuclear power plant kerfuffle1 in Japan, people are making comparisons with a TMI-Chernobyl scale, with TMI being a nuclear accident that is not bad at all2 and Chernobyl being the worst case scenario.3 This is actually very reassuring, because Chernobyl was really no big deal.4
Continue reading If Chernobyl is as bad as it gets, then GIVE ME MORE! The Annotated Version
Fukushima smokes, steams, puts self out again.
There are new fires at the Fukushima Daichi nuclear power plants. There was a fire on the roof of Reactor Unit 3. It burned for several hours causing workers to pull out of the area to have radiation levels tested. The radiatoi levels did not, however, change. About 6:00 PM local time fire went out (on its own) something like steam or smoke (said by TEPCO to be most likely steam but not from the fuel storage pool) started coming out of the building housing Reactor 2. There is no explanation at this time for either incident.
Both reactor buildings were damaged by the same hydrogen explosion (in Reactor 3’s building) soon after the quake and tsunami.
Reactor 3 has had problems with its fuel storage pool which contains some fuel rods with the somewhat more dangerous “MOX” fule. Reactor 2 is thought to have suffered a partial meltdown in the core.
Reactor 2 hasn’t been mentioned much in the news. Some time after the aforementioned damage, there was a second explosion heard somewhere in the vicinity of the reactor containment vessel.
The fire department has stopped spraying water on the plants for the day, and will await a safety reassessment.
Continue reading Fukushima smokes, steams, puts self out again.