Earthquake

Japan Fears Nuclear Reactor Is Leaking Contaminated Water
http://www.nytimes.com/2011/03/29/world/asia/29japan.html?

By HIROKO TABUCHI and KEN BELSON
Published: March 28, 2011

Radiation measuring 1,000 millisieverts per hour was detected in water in an overflow tunnel outside the plant’s Reactor No. 2, Japan’s nuclear regulator said at a news conference. The tunnel leads from the reactor’s turbine building, where contaminated water was discovered on Saturday, to an opening just 180 feet from the sea, said Hidehiko Nishiyama, deputy director-general for the Nuclear and Industrial Safety Agency.

The contaminated water level is now about three feet from the exit of the vertical, U-shaped tunnel and rising, Mr. Nishiyama said.

Contaminated water also was found at tunnels leading from the No. 1 and No. 3 reactors, though at much lower levels of radiation.
 
Radioactive Plutonium Found in Soil Around Damaged Japanese Nuclear Plant
Radioactive Plutonium Found in Soil Around Damaged Japanese Nuclear Plant | Asia | English

Officials say evidence of highly radioactive plutonium has been detected in the soil in five locations around Japan's earthquake-disabled nuclear reactor.

Operators of the Fukushima nuclear plant quoted by Japan's Kyodo news agency said Monday they believed the plutonium was seeping out from the nuclear fuel in the damaged reactors.

The Tokyo Electric Power Company (TEPCO) that runs the plant said they did not believe the levels were high enough to be considered a risk to human health.

BELIEVE IS SCARY, REAL SCARY!!! I WOULD BE 50+ MILES AWAY FROM THE SITE, NOW.
 
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Japan Considers Entombing Nuclear Plant as Workers Fight to Stop Radiation
Japan Considers Entombing Nuclear Plant as Workers Fight to Stop Radiation - Bloomberg

Japan will consider entombing its crippled atomic plant in concrete as workers grapple to reduce radiation and contain the worst nuclear disaster in 25 years.

Chief Cabinet Secretary Yukio Edano today ruled out the possibility that two of the six reactors at the Fukushima Dai- Ichi plant would ever be salvaged.

[It has been my impression that the site has been doomed since the use of sea water for cooling. Regardless, this is truly a national disaster of monumental proportions. The estimated recovery cost is now over $300 BILLION.]
 
WHAT WAS THE CAUSE OF THE HIGH Cl-38 RADIOACTIVITY IN THE FUKUSHIMA DAIICHI REACTOR #1
http://lewis.armscontrolwonk.com/files/2011/03/Cause_of_the_high_Cl38_Radioactivity.pdf

F. Dalnoki-Veress
March 28 2011

I have been totally consumed the last few weeks by one thing, day and night, and those are the events unfolding in Japan. I keep on alternating between complete disbelief and acceptance of the gravity of the situation, but mostly disbelief. And I am not the only one. Most of the nuclear physicists and engineers with whom I have spoken since the incident cannot - will not - believe that it is possible that some of the fuel that is melting could somehow produce little pockets that could go critical. I believed them for the longest time until the following came on the Kyodo news website (relevant text italicized below for emphasis) and I did the following analysis.


Conclusions

So we are left with the uncomfortable realization that the cause of the Cl-38 concentrations is not due to seawater intercepting neutrons from natural spontaneous fission of the used nuclear fuel. There has to be another reason. Assuming that the TEPCO measurements are correct, the results of this analysis seem to indicate that we cannot discount the possibility that there was another strong neutron source during the time that the workers were sending seawater into the core of reactor #1. However, since we don’t know the details of the configuration of the core and how the seawater came in contact with the fuel it is difficult to be certain. Given these uncertainties it is nonetheless important for TEPCO to be aware of the possibility of transient criticalities when work is being done; otherwise workers would be in considerably greater danger than they already are when trying to working to contain the situation. A transient criticality could explain the observed 13 “neutron beams” reported by Kyodo news agency (see above). This analysis is not a definitive proof but it does mean that we cannot rule localized criticality out and the workers should take the necessary precautions.
 

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Fukushima Workers Threatened by Heat Bursts; Sea Radiation Rises
Fukushima Workers Threatened by Heat Bursts; Sea Radiation Rises - Bloomberg

Japan’s damaged nuclear plant may be in danger of emitting sudden bursts of heat and radiation, undermining efforts to cool the reactors and contain fallout.

The potential for limited, uncontrolled chain reactions, voiced yesterday by the International Atomic Energy Agency, is among the phenomena that might occur, Chief Cabinet Secretary Yukio Edano told reporters in Tokyo today. The IAEA “emphasized that the nuclear reactors won’t explode,” he said.

Three workers at a separate Japanese plant received high doses of radiation in 1999 from a similar nuclear reaction, known as ‘criticality.’ Two of them died within seven months.

Tokyo Electric Power Co., the Fukushima Dai-Ichi plant’s operator, and Japan’s nuclear watchdog, dismissed the threat of renewed nuclear reactions, three weeks after an earthquake and tsunami triggered an automatic shutdown. Tokyo Electric has been spraying water on the reactors since the March 11 disaster in an effort to cool nuclear fuel rods.

“The reactors are stopped, so it’s hard to imagine re- criticality,” occurring, Tsuyoshi Makigami, a spokesman for the utility, told a news conference today.

A partial meltdown of fuel in the No. 1 reactor building may be causing isolated reactions, Denis Flory, nuclear safety director for the IAEA, said at a press conference in Vienna. This might increase the danger to workers at the site.

‘Ethereal Blue Flash’

Nuclear experts call such reactions “localized criticality.” They consist of a burst of heat, radiation and sometimes an “ethereal blue flash,” according to the U.S. Energy Department’s Los Alamos National Laboratory website. Twenty-one workers worldwide have been killed by criticality accidents since 1945, the site said.

The IAEA acknowledged “they don’t have clear signs that show such a phenomenon is happening,” Edano said.

Radioactive chlorine found March 25 in the No. 1 turbine building suggests chain reactions continued after the reactor shut down, physicist Ferenc Dalnoki-Veress of the James Martin Center for Nonproliferation Studies in Monterey, California, wrote in a March 28 paper. Radioactive chlorine has a half-life of 37 minutes, according to the report.

Japan’s Nuclear and Industrial Safety Agency said there’s no possibility of uncontrolled chain reactions. Boron, an element that absorbs neutrons and hinders nuclear fission, has been mixed with cooling water to prevent this, Hidehiko Nishiyama, a spokesman for the agency, told reporters today.

Ocean Contamination

Contamination of seawater found near the 40-year-old plant has increased. Radioactive iodine rose to 4,385 times the regulated safety limit yesterday from 2,572 times on Tuesday, Nishiyama said. No fishing is occurring nearby and the sea is dispersing the iodine so there is no health threat, he said.

There was 180 becquerel per cubic centimeter of radioactive iodine-131 found in the ocean 330 meters (1,082 feet) south of the plant. Drinking one liter of fresh water with that level would be equivalent to getting double the annual dose of radiation a person typically receives.

Workers have averted the threat of a total meltdown by injecting water into the damaged reactors. The complex’s six units have been reconnected with the power grid and two are using temporary motor-driven pumps. Work to repair the plant’s monitoring and cooling systems has been hampered by discoveries of hazardous radioactive water.

Dismantling the plant and decontaminating the site may take 30 years and cost Tokyo Electric more than 1 trillion yen ($12 billion), engineers and analysts said. The government hasn’t ruled out pouring concrete over the whole facility as one way to shut it down, Edano said. Tokyo is 135 miles (220 kilometers) south of the Dai-Ichi power plant.

Dumping Concrete

Dumping concrete on the plant would serve a second purpose: it would trap contaminated water, said Tony Roulstone, an atomic engineer who directs the University of Cambridge’s masters program in nuclear energy.

“They need to immobilize this water and they need something to soak it up,” he said. “You don’t want to create another hazard, but you need to get it away from the reactors.”

The process will take longer than the 12 years needed to decommission the Three Mile Island reactor in Pennsylvania following a partial meltdown in 1979, said Hironobu Unesaki, a nuclear engineering professor at Kyoto University.

Investors Wiped Out

Moody’s Japan K.K. cut its rating on Tokyo Electric and warned it may reduce it further, saying the problems at Fukushima “appear far from being resolved” and the company is likely to remain unprofitable for a long time. Senior secured and long-term issuer ratings were downgraded to Baa1 from A1, Moody’s said in a statement.

Tokyo Electric’s shareholders may be wiped out by clean-up costs and liabilities stemming from the nuclear accident, the worst since Chernobyl. The company, known as Tepco, faces claims of as much as 11 trillion yen if the crisis lasts two years and potential takeover by the government, according to a March 29 Bank of America Merrill Lynch report.

Radiation “far below” levels that pose a risk to humans was found in milk from California and Washington, the first signs Japan’s nuclear accident is affecting U.S. food, state and Obama administration officials said.

The U.S. is stepping up monitoring of radiation in milk, rain and drinking water, the Environmental Protection Agency and Food and Drug Administration said yesterday in a statement.

Radiation levels in the U.K. are normal and extra testing isn’t needed to protect the food supply, the Food Standards Agency said.

The number of dead and missing from the earthquake and tsunami had reached 27,690 as of 10 a.m. today, Japan’s National Police Agency said.
 
Fukushima Radiation: Modeling Shows Limited Spread in Ocean
Fukushima Radiation: Modeling Shows Limited Spread in Ocean - ScienceInsider

Daily computer simulations are suggesting that, so far, the hazardous radioactive materials being released into the sea by the Fukushima nuclear plants are still largely restricted to areas near the coast. In the model being run by French researchers, the powerful Kuroshiro current—the Pacific's version of the Gulf Stream—tends to block contaminated seawater from flowing southward toward Tokyo Bay while picking up little contamination itself.
 
[ame="http://www.youtube.com/watch?v=70ZHQ--cK40"]YouTube - SOS from Mayor of Minami Soma City, next to the crippled Fukushima nuclear power plant, Japan[/ame]

A Desperate Plea From a Japanese City to the World Is Heard
http://www.nytimes.com/2011/04/07/world/asia/07plea.html?_r=1&hp

By MARTIN FACKLER
Published: April 6, 2011


MINAMISOMA, Japan — It was a desperate plea for help, spoken into a small digital camcorder by the mayor of this seemingly forsaken city, and posted on the Internet like a bottle tossed into a digital sea.

In the 11-minute recording, the mayor, Katsunobu Sakurai, described the dire situation facing Minamisoma, whose residents were still reeling from a devastating earthquake and 60-foot tsunami when they were ordered to stay indoors because of radiation leaks from Japan’s crippled nuclear plant, 15 miles away. Those who had not fled now faced starvation, he said, as they were trapped in their homes or refugee shelters by the nuclear alert, which also prevented shipments of food from arriving.

“We are left isolated,” Mr. Sakurai said urgently into the camera, his brow furrowed and his voice strained with exhaustion. “I beg you, as the mayor of Minamisoma city, to help us.”

The video, posted on YouTube a day after it was recorded late on the night of March 24, became an instant sensation, and has since drawn more than 200,000 viewers. Almost two weeks later, the city hall is still getting phone calls, most from non-Japanese calling from abroad with offers to help. The city has also received hundreds of boxes of food and other supplies from individuals, and truckloads of relief goods from nonprofit organizations.

“It’s amazing how many of these donors say they saw us on YouTube,” said Noriyoshi Saito, who works in the City Hall economic section and is in charge of handling donated goods.

Mr. Sakurai described the online plea as a turning point in Minamisoma’s struggle against the triple disaster, which for a time had transformed this city of 75,000 people into a virtual ghost town. Some 50,000 residents fled in the first two weeks after the earthquake, though a small number have begun trickling back.

Mr. Sakurai credited the large-scale response to his video with helping those who remained in the stricken city to carry on.

“Suddenly, the world was extending its hand to us,” said Mr. Sakurai, 55, an energetic man who still wears the same beige uniform as in the video, but now smiles and seems more relaxed. “We learned we’re not alone.”

Today, the city is slowly coming back to life. While the order to stay indoors remains in place, many of the remaining residents have begun to ignore it. Gas stations and convenience stores are starting to reopen, though large stores remain closed. Cars are now plentiful on major thoroughfares, but most side streets and shops still remain eerily empty.

“I hope that by just opening my store I can set people’s hearts at ease,” said Yasuko Sanno, the owner of a small grocery store that was one of only a handful of businesses open recently on a shopping street. Ms. Sanno, who said she had returned after fleeing to a neighboring prefecture for nearly two weeks, had covered her shop’s windows with sheets proclaiming, “Hang in there, Minamisoma!”

In heavily damaged coastal areas, survivors were coming out to pick through the ruins for belongings, while rescue workers searched for bodies. Of the almost 1,500 people believed killed by the waves, which wiped away entire neighborhoods up to two miles inland, only 358 have been found.

City residents say things are slowly getting closer to normal, though the continuing crisis at the nearby Fukushima Daiichi nuclear power station still keeps the community stuck in limbo, uncertain of its fate.

Sumio Tanaka was able to reopen his sushi restaurant, Satsuki, on Monday for the first time since the earthquake. He said deliveries of food were starting to resume, though he had only a limited amount of fish from the far side of Japan, away from the nuclear plant.

While he did not know of the YouTube video, Mr. Tanaka credited the mayor for working hard to get the city back on its still wobbly feet.

“The mayor really put his heart into saving Minamisoma,” said Mr. Tanaka, 62.

Indeed, city employees said the video had drawn more attention abroad than in Japan. On a recent morning, a Japanese-American called from California to ask in halting Japanese where to send aid.

Mr. Sakurai describes the time when he made the video as the darkest moment in the disaster. Survivors had not even had time to recover the remains of loved ones from the wreckage of the tsunami when parts of the city were evacuated and people in others were ordered to remain indoors because of the plant accident. Food and fuel were running short as delivery trucks refused to enter within 18 miles of the plant, the area covered by the order to stay indoors.

“It was a terrifying time,” said Takamitsu Hoshi, a City Hall employee. “The furniture was constantly shaking from aftershocks, and we were constantly afraid of another explosion at the nuclear plant.”

Mr. Sakurai and other city employees described the video as a final call for help by a city that felt abandoned by the rest of Japan. The mayor said the city had even disappeared from news broadcasts because the reporters stationed in the City Hall press club had all run away.

In the video, titled, “S O S from Minamisoma mayor,” Mr. Sakurai spoke urgently of how city hall employees were “working under the threat of radiation.” He asked for volunteers to come to the city’s aid.

“Please help us before the contamination spreads further,” he said.

Mr. Sakurai said the idea for the video had come from local residents who came to City Hall to complain that so few volunteers were coming to help and urged him to make an appeal directly on the Internet. He admitted that he was skeptical of the idea at first, having never used YouTube. Still, he said he was desperate enough to try anything, so they shot the video in the mayor’s sparsely furnished meeting room.

“Until now, we waited for the mass media to come here and videotape us,” Mr. Sakurai recalled. “This time, we reversed the process by taking our own video and broadcasting it.”

While Mr. Sakurai spoke in Japanese, the resident who took the video, whom city officials said they did not know and could identify by only his family name, Nakata, later added English subtitles. Inquiries to the YouTube account that posted Mr. Sakurai’s video were unanswered on Tuesday, and city officials said Mr. Nakata was apparently among those who had fled Minamisoma.

While the video has remained online, Mr. Sakurai says the city’s situation has changed for the better since it was made. The city has added text to the video to tell would-be volunteers not to come because of the radiation threat, and asks that aid be sent instead. Food and fuel are flowing into the city again, though some trucking companies still refuse to come too close.

City officials said that more than anything, what the city really needed was for the Japanese government and the Tokyo Electric Power Company to get the nuclear plant under control. Then the city can get on with the difficult work of cleaning up and rebuilding.

“We could have bounced back much more quickly if it were not for this nuclear accident,” said Mr. Hoshi, the City Hall employee. “It’s frustrating that our city’s fate rests in someone else’s hands.”
 
Magnitude 7.4 - NEAR THE EAST COAST OF HONSHU, JAPAN
2011 April 07 14:32:41 UTC
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc0002ksa.php
 
Chernobyl
Paul Fusco
Chernobyl | Magnum In Motion

Over twenty years have passed since the meltdown at Chernobyl. Paul Fusco faces the dark legacy of the modern technological nightmare that continues to plague those exposed to its destructive radiation.


The International Atomic Energy Agency views the accident in Japan as one more serious than the partial core meltdown at Three Mile Island, but says it's nowhere near the scale of the disaster that occurred in Ukraine twenty-five years ago. Yet each day, tests detect more contamination. Low levels of iodine-131 and cesium-137 in the drinking water of several prefectures, albeit "at levels far below those that would initiate recommendations for restrictions of drinking water," are high enough to prompt warnings for infants. The Japanese Ministry of Health, Labor, and Welfare has detected very low-level contamination in spinach, leafy vegetables, and some meat. Individuals living within a 20 kilometer radius of the plant have been evacuated, and those who live within 30 kilometers have been asked to leave voluntarily.
Chernobyl's Tragic Legacy
 
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End to Japan nuke crisis is years, a fortune away
The Associated Press: End to Japan nuke crisis is years, a fortune away

TOKYO (AP) — Once Japan's leaky nuclear complex stops spewing radiation and its reactors cool down, making the site safe and removing the ruined equipment is going to be a messy ordeal that could take decades and cost hundreds of millions of dollars.
 
Japan expands nuclear evacuation zone as new quake hits
http://www.reuters.com/article/2011/04/11/us-japan-idUSTRE72A0SS20110411

(Reuters) - Japan on Monday expanded the evacuation zone around its crippled nuclear plant because of high levels of accumulated radiation, as a strong aftershock rattled the area one month after a quake and tsunami sparked the worst nuclear crisis since Chernobyl.
 
[Isn't this a dramatic announcement.]

Japan Nuclear Crisis: Officials Raise Crisis To Highest Severity Level, 7, On Par With Chernobyl
Japan Nuclear Crisis: Officials Raise Crisis To Highest Severity Level, 7, On Par With Chernobyl

TOKYO — Japan's nuclear regulators raised the severity level of the crisis at a stricken nuclear plant Tuesday to rank it on par with the 1986 Chernobyl disaster, citing the amount of radiation released in the accident.

The regulators said the rating was being raised from 5 to 7 – the highest level on an international scale overseen by the International Atomic Energy Agency. However, there was no sign of any significant change at the tsunami-stricken Fukushima Dai-ichi nuclear plant.

The new ranking signifies a "major accident" with "wider consequences" than the previous level, according to the Vienna-based IAEA.

"We have upgraded the severity level to 7 as the impact of radiation leaks has been widespread from the air, vegetables, tap water and the ocean," said Minoru Oogoda of Japan's Nuclear and Industrial Safety Agency.

NISA officials said one of the factors behind the decision was that the cumulative amount of radioactive particles released into the atmosphere since the incident had reached levels that apply to a Level 7 incident.

The revision was based on cross-checking and assessments of data on leaks of radioactive iodine-131 and cesium-137, said NISA spokesman Hidehiko Nishiyama.

"We have refrained from making announcements until we have reliable data," Nishiyama said.

"The announcement is being made now because it became possible to look at and check the accumulated data assessed in two different ways," he said, referring to measurements from NISA and the Nuclear Security Council.

Nishiyama noted that unlike in Chernobyl there have been no explosions of reactor cores at the Fukushima Dai-ichi plant, although there were hydrogen explosions.

"In that sense, this situation is totally different from Chernobyl," he said.

He said the amount of radiation leaking from the Fukushima Dai-ichi nuclear plant was around 10 percent of the Chernobyl accident.

Tokyo Electric Power Co., the operator of the plant, is still estimating the total amount of radioactive material that might be released by the accident, said company spokesman Junichi Matsumoto.

He acknowledged the amount of radioactivity released might even exceed the amount emitted by Chernobyl.

The company, under fire for its handling of the accident and its disaster preparedness before the March 11 earthquake and tsunami, issued yet another apology Tuesday.

"We humbly accept this. We deeply apologize for causing tremendous trouble to those who live near the nuclear complex and people in the prefecture," TEPCO spokesman Naoki Tsunoda said.

In Chernobyl, in the Ukraine, a reactor exploded on April 26, 1986, spewing a cloud of radiation over much of the Northern Hemisphere. A zone about 19 miles (30 kilometers) around the plant was declared uninhabitable, although some plant workers still live there for short periods and a few hundred other people have returned despite government encouragement to stay away.

Meanwhile, setbacks continued at Japan's tsunami-stricken nuclear power complex, with workers discovering a small fire near a reactor building Tuesday. The fire was extinguished quickly, TEPCO said.

It said the fire in a box containing batteries in a building near the No. 4 reactor was discovered at about 6:38 a.m. Tuesday and was put out seven minutes later.

It wasn't clear whether the fire was related to a magnitude-6.3 earthquake that shook the Tokyo area Tuesday morning. The cause of the fire is being investigated.

"The fire was extinguished immediately. It has no impact on Unit 4's cooling operations for the spent fuel rods," said TEPCO spokesman Naoki Tsunoda.

The plant was damaged in a massive tsunami March 11 that knocked out cooling systems and backup diesel generators, leading to explosions at three reactors and a fire at a fourth that was undergoing regular maintenance and was empty of fuel.

The magnitude-9.0 earthquake that caused the tsunami immediately stopped the three reactors, but overheated cores and a lack of cooling functions led to further damage.

Engineers have been able to pump water into the damaged reactors to cool them down, but leaks have resulted in the pooling of tons of contaminated, radioactive water that has prevented workers from conducting further repairs.

Aftershocks on Monday briefly cut power to backup pumps, halting the injection of cooling water for about 50 minutes before power was restored.

A month after the disaster, more than 145,000 people are still living in shelters, and the government on Monday added five communities to a list of places people should leave to avoid long-term radiation exposure.

A 12-mile (20-kilometer) radius has already been cleared around the plant.

The disaster is believed to have killed more than 25,000 people, but many of those bodies were swept out to sea and more than half of those feared dead are still listed as missing.

Aftershocks have taken more lives.

In Iwaki, a city close to the epicenter of a magnitude-7.0 temblor Monday, a landslide brought down three houses, trapping up to seven people. Four were rescued alive, but one of those – a 16-year-old girl – died at the hospital, a police official said. He would not give his name, citing policy.

Around 210,000 people have no running water and, following Monday's aftershocks, more than 240,000 people are without electricity.

In all, nearly 190,000 people have fled their homes, the vast majority of whom are living in shelters, according to the national disaster agency. About 85,000 are from the cleared zone around the nuclear plant; their homes may be intact, but it's not known when they'll be able to return to them.
 
Is This the Poster Food for a Radiation Menace?
http://www.nytimes.com/2011/04/12/health/12essay.html

April 11, 2011
By DENISE GRADY

9135


One of the many endearing things about my husband is that he has five Geiger counters.

I didn’t have much use for them until I started writing about radiation from the damaged nuclear reactors at the Fukushima Daiichi power plant in Japan. Recently, one of my interviews took a turn for the weird. I asked a scientist about possible health effects from radioactive materials leaking out of the plant, and he started talking about bananas.

“Why, we ingest radioactive material every day,” he said in a tone of wonderment. “Bananas are a most potent source.”

They contain a naturally occurring form of radioactive potassium, more than other fruit, he explained.

“It stays in our body, in our muscles,” he said. “Every second, our bodies — yours and mine — are irradiating.”

Brazil nuts are even hotter than bananas, he added, sounding almost gleeful. “The radium content is off the wall!”

I tried to steer the interview back to nuclear reactors, and for a few minutes it seemed to work. He said unnecessary exposures to radiation should be avoided.

But then he said: “I love bananas. I will not give them up.”

A few days later, I tried another expert, halfway across the country from the first. I asked about radioactive iodine and cesium being found in some Japanese milk and produce.

He said there wasn’t much risk, but it would probably still be better not to eat the food. Then he said, “I just had a banana for lunch.”

Uh oh, I thought, here comes the banana speech again. Is there a script circulating out there in radiation land, “How to Calm the Public With Bananas”?

“Bananas are radioactive,” he went on soothingly. “Everything is radioactive, including the food we eat and, for many people in this country, the water we drink. There is a point at which we say there’s no more than Mother Nature out there.”

Is there a point at which we say the urge to reassure people might get in the way of straight answers? A point at which, for instance, a reporter might think that if one more person brings up bananas, she herself will melt down, or, with all due respect, giggle.

I know the experts were just trying to put the invisible menace of radiation into perspective. But it did feel like a Wizard-of-Oz effort to distract the audience from the real questions: Pay no attention to those fuel rods behind the curtain!

When I told Peter Sandman about the banana speech, he laughed. Dr. Sandman is a risk communication expert based in Princeton, N.J., who has spent much of his long career advising scientists to avoid doing things like answering in bananas when the question is milk.

“The right comparison is the food they’re talking about,” Dr. Sandman said. “You can say: ‘The average amount is X. Now we’re seeing Y.’ ”

“It’s very bad risk communication to communicate in ways that make people feel as if you think they’re stupid,” he said.

He said he had worked with nuclear scientists who were irritated by the public’s ignorance about radiation, but were also proud to be recognized as experts. Pride plus irritation, he said, can be a recipe for pronouncements that come off as pompous and condescending. Mix in an agenda — whether it’s the urge to reassure people, or to stir them up — and the message can really backfire.

“People smell it,” Dr. Sandman said. “And they don’t trust you.”

That’s where the Geiger counters come in handy. Just how radioactive are bananas?

My husband, who teaches high school chemistry, took a banana to school and tested it with one of the Geiger counters he keeps in his classroom. He put the probe near the banana, then against the skin, then poked into the fruit — two five-minute runs at each spot. He did multiple runs to test the background radiation in the classroom. For good measure, he even tested an apple, an orange and a granola bar. The banana was not so hot. Not hot at all, in fact, no more counts per minute than the other stuff, or the background. He ate the banana.

I’m not saying the experts were wrong. But my husband staunchly defends the sensitivity of his Geiger counter. Maybe it was an odd banana. It doesn’t matter now.
 

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Christodouleas JP, Forrest RD, Ainsley CG, Tochner Z, Hahn SM, Glatstein E. Short-Term and Long-Term Health Risks of Nuclear-Power-Plant Accidents. New England Journal of Medicine.

On March 11, 2011, a 9.0-magnitude earthquake struck the east coast of Japan. The total number of people who died in the earthquake and the tsunami that it generated is still being assessed, but the official estimation already exceeds 14,000.1 The natural disaster also caused substantial damage to the Fukushima Daiichi nuclear power plant, the consequences of which are still unclear. The purpose of this review is to put the emergency at the Japanese power plant, even as it is evolving, into the context of the extensive literature on nuclear-reactor accidents by analyzing the mechanisms and major short-term and long-term health risks of radiation exposure. In addition, we briefly discuss the accidents at Three Mile Island in Pennsylvania in 1979 and at Chernobyl in Ukraine in 1986 because they illustrate the broad range of potential outcomes.
 

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JAPAN EARTHQUAKE AND NUCLEAR CRISIS
Japan is struggling with its worst-ever nuclear power disaster, following the magnitude-9 earthquake and massive tsunami that struck the country on 11 March. Nature brings you regular updates, analysis and comment on the crisis.
Specials : Nature
 
Stramondo S, Kyriakopoulos C, Bignami C, et al. Did the September 2010 (Darfield) earthquake trigger the February 2011 (Christchurch) event? Sci Rep 2011;1. http://www.nature.com/srep/2011/110922/srep00098/pdf/srep00098.pdf

We have investigated the possible cause-and-effect relationship due to stress transfer between two earthquakes that occurred near Christchurch, New Zealand, in September 2010 and in February 2011. The Mw 7.1 Darfield (Canterbury) event took place along a previously unrecognized fault. The Mw 6.3 Christchurch earthquake, generated by a thrust fault, occurred approximately five months later, 6 km south-east of Christchurch’s city center. We have first measured the surface displacement field to retrieve the geometries of the two seismic sources and the slip distribution. In order to assess whether the first earthquake increased the likelihood of occurrence of a second earthquake, we compute the Coulomb Failure Function (CFF). We find that the maximum CFF increase over the second fault plane is reached exactly around the hypocenter of the second earthquake. In this respect, we may conclude that the Darfield earthquake contributed to promote the rupture of the Christchurch fault.
 
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