Fumbling Toward Fukushima: Japanese Nuclear Plant Operator Plagued by Scandal
For years, Tepco, the operator of the Fukushima power plant, has been widely criticized for deadly accidents and improper inspections. The Fukushima disaster is the tragic nadir in a history of poor management at the company's nuclear facilities.
It must have been a difficult day for Tsunehisa Katsumata. In 2003, the then-president of the Tokyo Electric Power Company, or Tepco, gave a speech addressing what, until then, had been the biggest scandal in the history of Japan's largest energy utility company. In 29 incidents the year before, nuclear power plant maintenance documents had been falsified and Tepco had been forced to take 17 nuclear reactors temporarily offline as a result. Tepco CEO Hiroshi Araki and four other top executives resigned.
The tone of Katsumata's speech was clear: The numerous past incidents were in no way isolated mistakes made by individual employees. Instead, they were the result of a corporate culture at Tepco that had allowed hair-raising breaches in safety to occur.
A Nuclear Division Spins out of Control
"First, we must admit that we had no clear rules to judge whether equipment was fit for service," Katsumata states in his speech, which is still available on Tepco's website today. He said that there were no rules addressing the fact that machinery and equipment generally wear away or crack with the passage of time, so equipment was used as long as such flaws didn't pose "safety hazards."
And therein lies the problem: When something was unclear, Tepco engineers apparently made arbitrary decisions. "They repeatedly made personal decisions based on their own idea of safety," Katsumata said. But it is clear that those ideas of safety weren't stringent enough. "Nuclear division members tended to regard a stable supply of electricity as the ultimate objective," he said.
Over time, the nuclear division appeared to spin out of control, according to Katsumata's assessment. "The engineers were so confident in their knowledge of nuclear power that they came to hold the erroneous belief that they would not have to report problems to the national government as long as safety was maintained," he said. In the end, "they went as far as to delete factual data and falsify inspection and repair records."
He also attributed another dangerous trait to the engineers. The high degree of technical specialization required in nuclear power generation, he warned, had "hampered flexible personnel changes in the nuclear power division, and as a result, this division became a homogeneous and exclusive circle of engineers who defied checks by other divisions, including the management."
The 2004 manuscript is only one testament to the nuclear power giant's troubled approach to crisis management. Both before and after the speech, an impressive list of incidents continued to grow, including deadly accidents.
- During the 1980s and 1990s, in several instances Tepco falsified data in voluntary inspections, including the number of cracks in the reactor pressure vessels.
- In 1991 and 1992, the safety vessel of Reactor 1 at the Fukushima plant, which had gone online in 1971, was tested for leaks. According to Tepco, workers pumped air into the safety vessel in order to reduce the rate of leaks.
- In 2000, a reactor at the Fukushima nuclear plant had to be shut down because of a hole in a fuel rod. Similar incidents had already occurred in 1997 and 1994 in which radiation had been released.
- In 2002, cracks in water pipes were discovered at the nuclear power plant.
- In 2002, an engineer with the US firm General Electric, which manufactured three of the six reactors at the Fukushima Daiichi nuclear power plant, also raised the alarm bell. Inspeactions had not been carried out at a total of 13 reactors at Tepco power plants. He showed the Japanese nuclear regulatory authority 29 instances of falsified data and cover-ups, a development that led to the resignations in 2002 of top Tepco executives.
- In 2006, radioactive steam leaked from a pipe at the Fukushima plant.
- The company was also accused the same year of falsifying data about coolant water temperatures in 1985 and 1988. The data had then been used during mandatory inspections of the plant in 2005. In 2007, further falsified reactor data from Tepco emerged.
- In 2007, at least eight people died when the Kashiwazaki-Kariwa nuclear power plant was badly damaged in an earthquake. Pipes burst, fire broke out and radioactive water leaked from a spent fuel pool. Tepco had to decontaminate the affected building. The nuclear power plant remained closed for one year so earthquake safety -- which had allegedly already been good enough -- could be improved. Later it was determined that Tepco had missed 117 inspections at the site.
- In March 2009, another fire broke out at the Kashiwazaki-Kariwa plant, resulting in one employee injury.
- On March 2, 2011, just days before the start of the current earthquake catastrophe, Japan's nuclear regulators lobbed accusations of mass negligence against Tepco. It alleged that Tepco had failed to inspect 33 pieces of equipment at the Fukushima-Daiichi plant, one of the sites of the current catastrophe, including central cooling system elements in the six reactors, and spent fuel pools that hadn't been inspected according to regulations. The company has since admitted to having made the errors.
- At the same time, Tepco also reported to the nuclear regulatory authority that it had not only failed to do the 33 inspections at the Fukushima-Daiichi plant, but also 19 further inspections at the nearby Fukushima-Daini plant.
- Some experts had already been warning since the 1970s that the Mark 1 reactor type, produced by US manufacturer General Electric and also called the "Fukushima design," was not constructed to survive a combination of an earthquake and tsunami. Only days after the earthquake, two engineers who helped build the plant confirmed at a press conference that serious construction errors had been made. Many backup systems for emergencies had not been built at the plant.
'What is Going on Here?'
Looking at the situation today, statements made by Tepco spokesman Hiroyuki Kuroda in March 2004 seem bitterly ironic. He pledged that Tepco had "learned numerous valuable lessons" from the 2002 scandal. "One of the most important was that information should always be shared," he said.
But the company's approach to public information seemed to be precisely the opposite during the past two years. Just as it had in previous years, Tepco appears to have reported to the Japanese government only those things it was unable to keep secret. It was only when the shell of one of the reactor buildings exploded live on television on March 12 that the world became aware of the true extent of the accident.
As a result, five days after the tsunami, Japanese Prime Minister Naoto Kan himself visited executives at Tepco headquarters and shouted at flabbergasted engineers: "What is going on here?" He reportedly accused the Tepco officials of placing the well-being of their own company above that of the Japanese people.
"It is not a matter of whether Tepco collapses, it is a matter of whether Japan goes wrong," he is reported to have said. Afterwards, Kan named himself the head of a crisis team made up of government and Tepco officials.
Critics Claim Tepco Did More to Save Plant than Ensure Safety
The problem was that the action would have been equivalent to abandoning the reactor altogether because the salt water would have caused damage that could have permanently destroyed the plant. The engineers waited for hours before they finally begin pumping sea water at 8:20 p.m. local time into the reactor. A Tepco spokesman said the company had waited until the right time, taking into account the security of the entire facility.
Critics, however, hold another view. Tepco "hesitated because it tried to protect its assets," Akira Omoto, a former Tepco executive and a member of the Japan Atomic Energy Commission, told the Wall Street Journal. Another government official, speaking on the condition of anonymity, told the newspaper: "This disaster is 60 percent man-made. They failed in their initial response. It's like Tepco dropped and lost a 100 yen coin while trying to pick up a 10 yen coin."
Stay informed with our free news services:
© SPIEGEL ONLINE 2011
All Rights Reserved
Reproduction only allowed with the permission of SPIEGELnet GmbH
Corriere della Sera
MORE FROM SPIEGEL INTERNATIONAL
German PoliticsMerkel's Moves: Power Struggles in Berlin
World War IITruth and Reconciliation: Why the War Still Haunts Europe
EnergyGreen Power: The Future of Energy
European UnionUnited Europe: A Continental Project
Climate ChangeGlobal Warming: Curbing Carbon Before It's Too Late