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Wednesday, December 6, 2023

Storage pool water may be boiling at damaged Japan nuke power plant

An official wearing a protective suit helps usher people through a radiation emergency scanning center in Koriyama, Japan, Tuesday, March 15, 2011, four days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Mark Baker)

A Japanese nuclear safety official says the water inside the waste fuel storage pool for a damaged reactor at an atomic power plant may be boiling.

Hidehiko Nishiyama of the economy ministry that oversees nuclear safety told reporters Tuesday that “we cannot deny the possibility of water boiling” in the pool.

Nishiyama sought to avoid commenting on the potential risks from the rising temperatures caused by a failure of systems required to keep the spent fuel rods cool. He said the plant’s operator is considering what to do about the problem.

Dangerous levels of radiation leaking from the crippled nuclear plant forced Japan to order 140,000 people to seal themselves indoors Tuesday after an explosion and a fire dramatically escalated the crisis spawned by a deadly tsunami.

In a nationally televised statement, Prime Minister Naoto Kan said radiation has spread from four reactors of the Fukushima Dai-ichi nuclear plant in Fukushima state, one of the hardest-hit in Friday’s 9.0-magnitude earthquake and the ensuing tsunami that has killed more than 10,000 people, plunged millions into misery and pummeled the world’s third-largest economy.

Though Kan and other officials urged calm, Tuesday’s developments fueled a growing panic in Japan and around the world amid widespread uncertainty over what would happen next. In the worst case scenario, the reactor’s core would completely melt down, a disaster that could spew large amounts of radioactity into the atmosphere.

The radiation fears added to the catastrophe that has been unfolding in Japan, where at least 10,000 people are believed to have been killed and mllions of people have spent four nights with little food, water or heating in near-freezing temperatures as they dealt with the loss of homes and loved ones.

Asia’s richest country hasn’t seen such hardship since World War II. The stock market plunged for a second day and a spate of panic buying saw stores running out of necessities, raising government fears that hoarding may hurt the delivery of emergency food aid to those who really need it.

In a rare bit of good news, rescuers found a 70-year-old woman alive in her swept-away home four days after the tsunami flattened much of Japan’s northeastern coast.

After Tuesday’s fire and separate explosion at two reactors in the Fukushima Dai-ichi nuclear plant, officials just south of the area reported up to 100 times the normal levels of radiation, Kyodo News agency reported. While those figures are worrying if there is prolonged exposure, they are far from fatal.

Tokyo reported slightly elevated radiation levels, but officials said the increase was too small to threaten the 39 million people in and around the capital, about 170 miles (270 kilometers) away. Closer to the stricken nuclear complex, the streets in the coastal city of Soma were empty as the few residents who remained there heeded the government’s warning to stay indoors.

Kan and other officials warned there is danger of more leaks and told people living within 19 miles (30 kilometers) of the Fukushima Dai-ichi complex to stay indoors to avoid exposure that could make people sick.

“Please do not go outside. Please stay indoors. Please close windows and make your homes airtight,” Chief Cabinet Secretary Yukio Edano told residents in the danger zone.

“These are figures that potentially affect health. There is no mistake about that,” he said.

Weather forecasts for Fukushima were for snow and wind from the northeast Tuesday evening, blowing southwest toward Tokyo, then shifting and blowing west out to sea. That’s important because it shows which direction a possible nuclear cloud might blow.

The nuclear crisis is the worst Japan has faced since the atomic bombing of Hiroshima and Nagasaki during World War II. It is also the first time that such a grave nuclear threat has been raised in the world since a nuclear power plant in Chernobyl, Ukraine exploded in 1986.

Some 70,000 people had already been evacuated from a 12-mile (20-kilometer) radius from the Dai-ichi complex. About 140,000 remain in the new warning zone.

The International Atomic Energy Agency said Tuesday that Japanese officials told it that the reactor fire was in the storage pond — a pool where used nuclear fuel is kept cool — and that “radioactivity is being released directly into the atmosphere.”

Workers were desperately trying to stabilize three reactors at the power plant that exploded in the wake of Friday’s quake and tsunami, after losing their ability to cool down and releasing some radiation. Since the quake, engineers have been injecting seawater into the reactors as a last-ditch coolant.

A fourth reactor that had been shut down before the quake caught fire Tuesday and more radiation was released, Edano said.

The fire was put out. Even though the fourth reactor was shut down, the fire there was believed to be the source of the elevated radiation.

“It is likely that the level of radiation increased sharply due to a fire at Unit 4,” Edano said. “Now we are talking about levels that can damage human health. These are readings taken near the area where we believe the releases are happening. Far away, the levels should be lower.”

He said another reactor whose containment building exploded Monday had not contributed greatly to the increased radiation. Edano said that reactor, and another, Unit 3, had stabilized but the status of Unit 2 was unclear.

Temperatures in two other reactors, units 5 and 6, were slightly elevated, Edano said.

“The power for cooling is not working well and the temperature is gradually rising, so it is necessary to control it,” he said.

Officials said 50 workers, all of them wearing protective radiation gear, were still trying to pump water into the reactors to cool them. They say 800 other staff were evacuated. The fires and explosions at the reactors have injured 15 workers and military personnel and exposed up to 190 people to elevated radiation.

In Tokyo, slightly higher-than-normal radiation levels were detected Tuesday but officials insisted there are no health dangers.

“The amount is extremely small, and it does not raise health concerns. It will not affect us,” Takayuki Fujiki, a Tokyo government official said.

Kyodo reported that radiation levels nine times higher than normal were briefly detected in Kanagawa prefecture near Tokyo and that the Tokyo metropolitan government said it had detected a small amount of radioactive materials in the air.

Edano said the radiation readings had fallen significantly by the evening.

Japanese government officials are being rightly cautious, said Donald Olander, professor emeritus of nuclear engineering at University of California at Berkeley. He believed even the heavily elevated levels of radiation around Dai-ichi are “not a health hazard.” But without knowing specific dose levels, he said it was hard to make judgments.

“Right now it’s worse than Three Mile Island,” Olander said. But it’s nowhere near the levels released during Chernobyl.

On Three Mile Island, the radiation leak was held inside the containment shell — thick concrete armor around the reactor. The Chernobyl reactor had no shell and was also operational when the disaster struck. The Japanese reactors automatically shut down when the quake hit and are encased in containment shells.

Olander said encasing the reactors in a concrete sarcophagus — the last-ditch effort done in Chernobyl — is far too premature. Operators need to wait until they cool more, or risk making the situation even worse.

The death toll from last week’s earthquake and tsunami jumped Tuesday as police confirmed the number killed had topped 2,700, though that grim news was overshadowed by a deepening nuclear crisis. Officials have said previously that at least 10,000 people may have died in Miyagi province alone.

Millions of people spent a fourth night with little food, water or heating in near-freezing temperatures as they dealt with the loss of homes and loved ones. Asia’s richest country hasn’t seen such hardship since World War II.

With snow and freezing temperatures forecast for the next several days, shelters were gathering firewood to burn for heat, stacking it under tarps and tables.

Though Japanese officials have refused to speculate on the death toll, Indonesian geologist Hery Harjono, who dealt with the 2004 Asian tsunami, said it would be “a miracle really if it turns out to be less than 10,000” dead.

The 2004 tsunami killed 230,000 people — of which only 184,000 bodies were found.

Rescuers were heartened Tuesday to find one survivor. Osaka fire department spokesman Yuko Kotani says a 70-year-old woman was found inside her house that was washed away by the tsunami in northeastern Japan’s Iwate prefecture. The rescuers from Osaka, in western Japan, were sent to the area for disaster relief.

Kotani said the woman was conscious but suffering from hypothermia and is being treated at a hospital. She would not give the woman’s name.

The impact of the earthquake and tsunami dragged down stock markets. The benchmark Nikkei 225 stock average plunged for a second day Tuesday, nose-diving more than 10 percent to close at 8,605.15 while the broader Topix lost more than 8 percent.

To lessen the damage, Japan’s central bank made two cash injections totaling 8 trillion yen ($98 billion) Tuesday into the money markets after pumping in $184 billion on Monday.

Initial estimates put repair costs in the tens of billions of dollars, costs that would likely add to a massive public debt that, at 200 percent of gross domestic product, is the biggest among industrialized nations.

Yuta Tadano, a 20-year-old pump technician at the Fukushima plant, said he was in the complex when quake hit.

“It was terrible. The desks were thrown around and the tables too. The walls started to crumble around us and there was dust everywhere. The roof began to collapse.

“We got outside and confirmed everyone was safe . Then we got out of there. We had no time to be tested for radioactive exposure. I still haven’t been tested,” Tadano told The Associated Press at an evacuation center.

“I worry a lot about fallout. If we could see it we could escape, but we can’t,” said Tadano, cradling his 4-month-old baby, Shoma.

The Dai-ichi plant is the most severely affected of three nuclear complexes that were declared emergencies after suffering damage in Friday’s quake and tsunami, raising questions about the safety of such plants in coastal areas near fault lines and adding to global jitters over the industry.


Yuasa reported from Tokyo. Associated Press writer Elaine Kurtenbach contributed to this report.

Copyright © 2011 The Associated Press

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6 thoughts on “Storage pool water may be boiling at damaged Japan nuke power plant”

  1. It may not be time to panic Carl but I just read that the dome on one of the affected reactors is cracked. What an east meets west scenario when conscidering who’s up or down wind. Bit of a mute point at this time don’t you think ?
    There’s also lots of squawking in the air about Japans Nuke regulators having tongues tied and broad safety brushes to paint over cause and effect for sub par construction.
    We continually push the envelope inventing ways to explain in hindsight dangers that profit driven machinery cannot back up. Easy as ABC certainly does not apply, No ?
    A devout friend nearly remarked, Rapture, today,
    a Holistic one, said Maya,
    to which I replied in both cases,
    Man spelled upside down is Wau.

    • Check that, now it’s official that the reactor is on fire with the other three in my IMHO, no doubt to follow suit.
      Where is, that confounded Bucket list ?

      • Hi Bryan,

        I’ve been watching CNN coverage of the disaster. They had an expert concerning nuclear safety discussing this type of reactor, the GE Mark I’s. Seemingly there are 32 of them worldwide and they were classed as ‘unsafe’ from the get go concerning containment issues…!? He unequivocally said they need to be phased out, all of them. Japan operates a total of 55 nukes with more under construction. I’d say they are fully committed to the technology. Supposedly there’s 23 of these Mark I’s in the U.S. within 13 states.

        One of the big design flaws is how they store their “spent fuel rods” without any type of containment for safety purposes. They are cooled by water since they are still ‘hot’ and also dangerous in a nuclear contamination sense. The rods are stored in a box like affair above ground with the rods at the top level. I’m surprised in that having been targeted with nuclear weapons at the tail end of WWII that they’d be 13th octave ‘safety bears’ concerning the construction of these facilities, along with many redundant safety measures covering just about every scenario including a massive tidal wave, but seemingly not. If they had been tsunami conscious then they should have build 50 foot high reinforced concrete seawalls in front of the reactors complex on the beach front to break the massive inflow of water from the ocean in a convex shape abuttng the ocean just like a high dam used for power generation.

        I don’t like the looks of this entire site arrangement. Also why so many reactors at one site in a row nextt to the ocean on one of the most active geological zones in the world? Whatever the outcome it’s going to be a protracted, ugly affair. Poor poor Japan… : (

        The upside to this disaster is that a review of all 104 reactors in the U.S. are as of now being analyzed for safety issues relative to geologic upheavals etc. I’ve posted comments about thorium powered reactors. The industry needs to get motivated and move away from older uraniium based technology to the infinitely safer thorium based reactor design consequences to the uranium producers be damned. .

        Carl Nemo **==

        • I’m out looking for my grand children who won’t have the window or the proverbial bucket, but hopefully the ability to procreate whilst not glowing in the dark..
          It’s quite grotesque what radiation does to the human form, funny how that isn’t a prominent thing in the bucket right now.
          NPR, gun control, 2012’s election cycle, far from relevant for a nation that used to hit the ground runnin.. Hack

          It’s no longer a matter of conjecture that in a moment of grief while in the wings awaiting, man will dream singular futures, and it is his nature as lesser men take everyone and everything he creates with him, to ruin..Preoccupied.

  2. I’m thinking U.S. based readers might like to view a jetstream animation of wind flows across the Pacific to the U.S. mainland.

    Unless there’s a major explosion lofting radioactive material into the upper atmosphere there’s little risk of heavy doses reaching the U.S. mainland.

    Seemingly California, Oregon and even SW Washington were I live could be affected, but again the dose will be quite low. Everyday of our lives we are bombarded by highly active particles from the sun, gamma and cosmic rays from space etc. Our upper atmosphere protects us to some degree, but particles do get through. In fact neutrinos from the core of the sun pass through the entire earth as if it’s transparent. In our lifetime collisions with our cell mitochondria can cause mutations etc., up to and including cancer so it’s not as if we aren’t living in a sea of such radiation on a daily basis.

    There’s no reason to panic. We have to wait and see. Hopefully the Japanese nuclear team has a backup plan to cover this mess as the Russians did at Chernobyl in ’86’ with massive amounts of concrete and earth. Possibly ore rich in lead could be brought for the mounding. There’s no shortage of lead and the ore would be fairly inexpensive to refined lead itself.

    There’s a rumor that “Homeland Security” has put “Mother Earth” on the terrorist watch list. ; )

    Carl Nemo **==

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