Gray and silver storage tanks filled with radioactive wastewater are sprawling over the grounds of the Fukushima Daiichi plant.
By MARTIN FACKLER
Published: April 29, 2013
TOKYO — Two years after a triple meltdown that grew into the world’s second worst nuclear disaster, the Fukushima Daiichi nuclear power plant is faced with a new crisis: a flood of highly radioactive wastewater that workers are struggling to contain.
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Groundwater is pouring into the plant’s ravaged reactor buildings at a rate of almost 75 gallons a minute. It becomes highly contaminated there, before being pumped out to keep from swamping a critical cooling system. A small army of workers has struggled to contain the continuous flow of radioactive wastewater, relying on hulking gray and silver storage tanks sprawling over 42 acres of parking lots and lawns. The tanks hold the equivalent of 112 Olympic-size pools.
But even they are not enough to handle the tons of strontium-laced water at the plant — a reflection of the scale of the 2011 disaster and, in critics’ view, ad hoc decision making by the company that runs the plant and the regulators who oversee it. In a sign of the sheer size of the problem, the operator of the plant, Tokyo Electric Power Company, or Tepco, plans to chop down a small forest on its southern edge to make room for hundreds more tanks, a task that became more urgent when underground pits built to handle the overflow sprang leaks in recent weeks.
“The water keeps increasing every minute, no matter whether we eat, sleep or work,” said Masayuki Ono, a general manager with Tepco who acts as a company spokesman. “It feels like we are constantly being chased, but we are doing our best to stay a step in front.”
While the company has managed to stay ahead, the constant threat of running out of storage space has turned into what Tepco itself called an emergency, with the sheer volume of water raising fears of future leaks at the seaside plant that could reach the Pacific Ocean.
That quandary along with an embarrassing string of mishaps — including a 29-hour power failure affecting another, less vital cooling system — have underscored an alarming reality: two years after the meltdowns, the plant remains vulnerable to the same sort of large earthquake and tsunami that set the original calamity in motion.
There is no question that the Fukushima plant is less dangerous than it was during the desperate first months after the accident, mostly through the determined efforts of workers who have stabilized the melted reactor cores, which are cooler and less dangerous than they once were.
But many experts warn that safety systems and fixes at the plant remain makeshift and prone to accidents.
The jury-rigged cooling loop that pours water over the damaged reactor cores is a mazelike collection of pumps, filters and pipes that snake two and a half miles along the ground through the plant. And a pool for storing used nuclear fuel remains perched on the fifth floor of a damaged reactor building as Tepco struggles to move the rods to a safer location.
The situation is worrisome enough that Shunichi Tanaka, a longtime nuclear power proponent who is the chairman of the newly created watchdog Nuclear Regulation Authority, told reporters after the announcement of the leaking pits that “there is concern that we cannot prevent another accident.”
A growing number of government officials and advisers now say that by entrusting the cleanup to the company that ran the plant before the meltdowns, Japanese leaders paved the way for a return to the insider-dominated status quo that prevailed before the disaster.
Even many scientists who acknowledge the complexity of cleaning up the worst nuclear disaster since Chernobyl fear that the water crisis is just the latest sign that Tepco is lurching from one problem to the next without a coherent strategy.
“Tepco is clearly just hanging on day by day, with no time to think about tomorrow, much less next year,” said Tadashi Inoue, an expert in nuclear power who served on a committee that drew up the road map for cleaning up the plant.
But the concerns extend well beyond Tepco. While doing a more rigorous job of policing Japan’s nuclear industry than regulators before the accident, the Nuclear Regulation Authority has a team of just nine inspectors to oversee the more than 3,000 workers at Fukushima.
And a separate committee created by the government to oversee the cleanup is loaded with industry insiders, including from the Ministry of Trade, in charge of promoting nuclear energy, and nuclear reactor manufacturers like Toshiba and Hitachi. The story of how the Fukushima plant ended up swamped with water, critics say, is a cautionary tale about the continued dangers of leaving decisions about nuclear safety to industry insiders.
Related
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Mishaps Underscore Weaknesses of Japanese Nuclear Plant (April 11, 2013)
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Small Leak Is Discovered at Plant in Fukushima (April 15, 2013)
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Nuclear power plant stricken in 2011 tsunami now leaking radioactive groundwater: report
The water contains strontium, a byproduct of nuclear fission, and the Fukushima Dai-ichi plant is leaking it at a rate of 75 gallons per minute.
By Beth Stebner / NEW YORK DAILY NEWS
Wednesday, May 1, 2013, 2:35 PM
© Issei Kato / Reuters/REUTERS
Members of the media wear protective suits at the tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima prefecture in March. Two years after the disaster, contaminated groundwater containing radioactive strontium, a byproduct of nuclear fission, is leaking from the damaged reactor.
The Japanese nuclear plant stricken by a deadly tsunami two years ago is facing the dire issue of containing radioactive waste water, as operators rush to repair yet another possible disaster.
The March 11, 2011 earthquake and tsunami left the Fukushima Dai-ichi plant stricken, badly damaging its reactors, which serve to cool nuclear cores.
Now contaminated groundwater containing radioactive strontium, a byproduct of nuclear fission, is leaking from damaged reactor structures at an alarming rate of 75 gallons per minute.
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© KYODO Kyodo / Reuters/REUTERS
Tanks of radiation-contaminated water are stored onsite at Fukishima.
The Dai-Ichi plant is owned by the Tokyo Electric Power Company, also known as Tepco, which has struggled to handle the plant’s meltdown and subsequent recovery.
The nuclear incident has been described as one of the most devastating in history, second only to Russia’s Chernobyl incident of the 1980s.
As the New York Times notes, news of the leaking groundwater comes at an embarrassing time for Tepco, which experienced a 29-hour power outage last month which affected another of the plant’s cooling systems.
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The radiation leaks at Fukushima was the biggest nuclear disaster since Chernobyl
