Tag Archive: Soma


http://news.yahoo.com/s/ap/20110412/ap_on_bi_ge/as_japan_earthquake

By YURI KAGEYAMA and RYAN NAKASHIMA, Associated Press Yuri Kageyama And Ryan Nakashima, Associated Press 53 mins ago

TOKYO – Japan raised the crisis level at its crippled nuclear plant Tuesday to a severity on par with the 1986 Chernobyl disaster, citing high overall radiation leaks that have contaminated the air, tap water, vegetables and seawater.

Japanese nuclear regulators said they raised the rating from 5 to 7 — the highest level on an international scale of nuclear accidents overseen by the International Atomic Energy Agency — after new assessments of radiation leaks from the Fukushima Dai-ichi plant since it was disabled by the March 11 tsunami.

The new ranking signifies a “major accident” that includes widespread effects on the environment and health, according to the Vienna-based IAEA. But Japanese officials played down any health effects and stressed that the harm caused by Chernobyl still far outweighs that caused by the Fukushima plant.

The revision came a day after the government added five communities to a list of places people should leave to avoid long-term radiation exposure. A 12-mile (20-kilometer) radius already had been cleared around the plant.

The news was received with chagrin by residents in Iitate, one of the five communities, where high levels of radiation have been detected in the soil. The village of 6,200 people is about 40 kilometers from the Fukushima plant.

“It’s very shocking to me,” said Miyuki Ichisawa, 52, who runs a coffee shop in Iitate. “Now the government is officially telling us this accident is at the same level of Chernobyl.”

Iitate’s town government decided Tuesday to ban planting of all farm products, including rice and vegetables, said local official Shinichi Momma. The national government earlier banned rice growing there but not necessarily vegetables.

Japanese officials said the leaks from the Fukushima plant so far amount to a tenth of the radiation emitted in the Chernobyl disaster, but said they eventually could exceed Chernobyl’s emissions if the crisis continues.

“This reconfirms that this is an extremely major disaster. We are very sorry to the public, people living near the nuclear complex and the international community for causing such a serious accident,” said Chief Cabinet Secretary Yukio Edano.

But Edano told reporters there was no “direct health damage” so far from the crisis. “The accident itself is really serious, but we have set our priority so as not to cause health damage.”

Click image to see photos of quake, tsunami damage

Hironobu Unesaki, a nuclear physicist at Kyoto University Research Reactor Institute, said the revision was not a cause for worry, that it had to do with the overall release of radiation and was not directly linked to health dangers. He said most of the radiation was released early in the crisis and that the reactors still have mostly intact containment vessels surrounding their nuclear cores.

The change was “not directly connected to the environmental and health effects,” Unesaki said. “Judging from all the measurement data, it is quite under control. It doesn’t mean that a significant amount of release is now continuing.”

Prime Minister Naoto Kan, in a national television address, urged the public not to panic and to focus on recovering from the disaster.

“Right now, the situation of the nuclear reactors at the Fukushima plant has been stabilizing step by step. The amount of radiation leaks is on the decline,” he said. “But we are not at the stage yet where we can let our guards down.”

Continued aftershocks following the 9.0-magnitude megaquake on March 11 are impeding work on stabilizing the Fukushima plant — the latest a 6.3-magnitude one Tuesday that prompted plant operator Tokyo Electric Power Co., or TEPCO, to temporarily pull back workers.

Officials from Japan’s Nuclear and Industrial Safety Agency said that the cumulative amount of radioactive particles released into the atmosphere since the incident had reached levels that apply to a Level 7 incident. Other factors included damage to the plant’s buildings and accumulated radiation levels for its workers.

“We have refrained from making announcements until we have reliable data,” said NISA spokesman Hidehiko 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 Japan’s Nuclear Security Council.

NISA and the NSC have been measuring emissions of radioactive iodine-131 and cesium-137, a heavier element with a much longer half-life. Based on an average of their estimates and a formula that converts elements into a common radioactive measure, the equivalent of about 500,000 terabecquerels of radiation from iodine-131 has been released into the atmosphere since the crisis began.

That well exceeds the Level 7 threshold of the International Nuclear and Radiological Event Scale of “several tens of thousands of terabecquerels” of iodine-131. A terabecquerel equals a trillion becquerels, a measure for radiation emissions.

The government says the Chernobyl incident released 5.2 million terabecquerels into the air — about 10 times that of the Fukushima plant.

If the leaks continue, the amount of radioactivity released in Fukushima could eventually exceed the amount emitted by Chernobyl, a possibility that Naoki Tsunoda, a TEPCO spokesman, said the company considers “extremely low.”

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.

In 2005, the Chernobyl Forum — a group comprising the International Atomic Energy Agency and several other U.N. groups — said fewer than 50 deaths could be confirmed as being connected to Chernobyl. It also said the number of radiation-related deaths among the 600,000 people who helped deal with the aftermath of the accident would ultimately be around 4,000.

The U.N. health agency, however, has said about 9,300 people are likely to die of cancers caused by radiation. Some groups, including Greenpeace, have put the numbers 10 times higher.

The Fukushima plant was damaged in a massive tsunami 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 pumped 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.

A month after the disaster, more than 145,000 people are still living in shelters. The quake and tsunami are 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.

___

Associated Press writers Shino Yuasa and Noriko Kitano in Tokyo and Eric Talmadge in Soma contributed to this report.

http://news.yahoo.com/s/ap/as_japan_earthquake

By SHINO YUASA and JAY ALABASTER, Associated Press Shino Yuasa And Jay Alabaster, Associated Press 11 mins ago

TOKYO – A suspected breach in the reactor at the stricken Fukushima nuclear plant could mean more serious radioactive contamination, Japanese officials revealed Friday, as the prime minister called the country’s ongoing fight to stabilize the plant “very grave and serious.”

A somber Prime Minister Naoto Kan sounded a pessimistic note at a briefing hours after nuclear safety officials announced what could be a major setback in the urgent mission to stop the plant from leaking radiation, two weeks after a devastating earthquake and tsunami disabled it.

“The situation today at the Fukushima Dai-ichi power plant is still very grave and serious. We must remain vigilant,” Kan said. “We are not in a position where we can be optimistic. We must treat every development with the utmost care.”

The uncertain situation halted work at the nuclear complex, where dozens had been trying feverishly to stop the overheated plant from leaking dangerous radiation. The plant has leaked some low levels of radiation, but a breach could mean a much larger release of contaminants.

The possible breach in Unit 3 might be a crack or a hole in the stainless steel chamber of the reactor core or in the spent fuel pool that’s lined with several feet of reinforced concrete. The temperature and pressure inside the core, which holds the fuel rods, remained stable and was far lower than would further melt the core.

Suspicions of a possible breach were raised when two workers waded into water 10,000 times more radioactive than levels normally found in water in or around a reactor and suffered skin burns, the Nuclear and Industrial Safety Agency said.

Kan apologized to farmers and business owners for the toll the radiation has had on their livelihoods: Several countries have halted some food imports from areas near the plant after milk and produce were found to contain elevated levels of radiation.

He also thanked utility workers, firefighters and military personnel for “risking their lives” to cool the overheated facility.

The alarm Friday comes two weeks to the day since the magnitude-9 quake triggered a tsunami that enveloped cities along the northeastern coast and knocked out the Fukushima reactor’s cooling systems.

Police said the official death toll jumped past 10,000 on Friday. With the cleanup and recovery operations continuing and more than 17,400 listed as missing, the final number of dead was expected to surpass 18,000.

Click image to see photos of quake, tsunami damage

The nuclear crisis has compounded the challenges faced by a nation already saddled with a humanitarian disaster. Much of the frigid northeast remains a scene of despair and devastation, with Japan struggling to feed and house hundreds of thousands of homeless survivors, clear away debris and bury the dead.

A breach could mean a leak has been seeping for days, likely since the hydrogen explosion at Unit 3 on March 14. It’s not clear if any of the contaminated water has run into the ground. Radiation readings for the air were not yet available for Friday, but detections in recent days have shown no significant spike.

But elevated levels of radiation have already turned up in raw milk, seawater and 11 kinds of vegetables, including broccoli, cauliflower and turnips. Tap water in several areas of Japan — including Tokyo — also showed radiation levels considered unsafe for infants, who are particularly vulnerable to cancer-causing radioactive iodine, officials said.

The scare caused a run on bottled water in the capital, and Tokyo municipal officials are distributing it to families with babies.

Previous radioactive emissions have come from intentional efforts to vent small amounts of steam through valves to prevent the core from bursting. However, releases from a breach could allow uncontrolled quantities of radioactive contaminants to escape into the surrounding ground or air.

Government spokesman Yukio Edano said “safety measures may not be adequate” and warned that may contribute to rising anxiety among people about how the disaster is being managed.

“We have to make sure that safety is secured for the people working in that area. We truly believe that is incumbent upon us,” the chief Cabinet secretary told reporters.

Edano said people living 12 to 20 miles (20 to 30 kilometers) from the plant should still be safe from the radiation as long as they stay indoors. But since supplies are not being delivered to the area fast enough, he said it may be better for residents in the area to voluntarily evacuate to places with better facilities.

“If the current situation is protracted and worsens, then we will not deny the possibility of (mandatory) evacuation,” he said.

NISA spokesman Hidehiko Nishiyama said later that plant operator Tokyo Electric Power Co. was issued a “very strong warning” for safety violations and that a thorough review would be conducted once the situation stabilizes.

Meanwhile, damage to factories was taking its toll on the world’s third-largest economy and creating a ripple effect felt worldwide.

Nissan Motor Co. said it may move part of its engine production line to the United States because of damage to a plant.

The quake and tsunami are emerging as the world’s most expensive natural disasters on record, wreaking up to $310 billion in damages, the government said.

“There is no doubt that we have immense economic and financial damage,” Finance Minister Yoshihiko Noda said. “It will be our task how to recover from the damage.”

At Sendai’s port, brand new Toyota cars lay crushed in piles. At the airport, flooded by the tsunami on March 11, U.S. Marines used bulldozers and shovels to shift wrecked cars that lay scattered like discarded toys.

Still, there were examples of resilience, patience and fortitude across the region.

In Soma, a hard-hit town along the Fukushima prefecture coast, rubble covered the block where Hiroshi Suzuki’s home once stood. He watched as soldiers dug into mounds of timber had been neighbors’ homes in search of bodies. Just three bodies have been pulled out.

“I never expected to have to live through anything like this,” he said mournfully. Suzuki is one of Soma’s lucky residents, but the tsunami washed away the shop where he sold fish and seaweed.

“My business is gone. I don’t think I will ever be able to recover,” said Suzuki, 59.

Still, he managed to find a bright side. “The one good thing is the way everyone is pulling together and helping each other. No one is stealing or looting,” he said.

“It makes me feel proud to be Japanese.”

___

Alabaster reported from Onagawa. Associated Press writers Elaine Kurtenbach, Tomoko A. Hosaka, Kristen Gelineau, Jean H. Lee and Jeff Donn in Tokyo, Eric Talmadge in Soma and Johnson Lai in Sendai contributed to this report.

%d bloggers like this: