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The Fukushima Nuclear Power Plant Disaster and the Future of Renewable Energy
Naoto Kan, Brett de Bary
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eBook - ePub
The Fukushima Nuclear Power Plant Disaster and the Future of Renewable Energy
Naoto Kan, Brett de Bary
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About This Book
In a speech delivered in Japanese at Cornell University, Naoto Kan describes the harrowing days after a cataclysmic earthquake and tsunami led to the meltdown of three reactors at the Fukushima Daiichi Nuclear Power Plant. In vivid language, he tells how he struggled with the possibility that tens of millions of people would need to be evacuated.
Cornell Global Perspectives is an imprint of Cornell University's Mario Einaudi Center for International Studies. The works examine critical global challenges, often from an interdisciplinary perspective, and are intended for a non-specialist audience. The Distinguished Speaker series presents edited transcripts of talks delivered at Cornell, both in the original language and in translation.
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IT HAS NOW BEEN SIX YEARS since the accident at Japan’s Fukushima Daiichi Power Plant. A year and a half after its occurrence, I published the book, My Nuclear Nightmare: Leading Japan Through the Fukushima Disaster to a Nuclear-Free Future, based on my experience as Prime Minister of Japan at the time of the accident. The English translation of this book has just been published by Cornell University Press and I am deeply grateful. The book offers an account of the situations I faced at the time of the accident, focusing especially on what I confronted during the week that began on March 11, 2011. I would be very pleased if you find my account of what actually happened during this time instructive.
The Great East Japan Earthquake and tsunami
The Great East Japan Earthquake erupted without any warning at 2:46 in the afternoon of March 11, 2011. At that moment, I was attending a meeting of the Audit Committee in our Diet’s [Parliament’s] Upper House. No sooner had the committee chair announced the recess of the session than I raced to the Crisis Management Center in the Prime Minister’s offi ce complex beside the Diet Building. There, reports about the earthquake and tsunami were pouring in in rapid succession. According to these initial reports, all nuclear power plants in areas where the earthquake had occurred had been shut down successfully.
In nuclear power plants, control rods can be automatically inserted between the fuel rods to halt a nuclear fission chain reaction. However, if earthquake damage makes it impossible to insert these rods, there is no way of halting the reaction and a meltdown will occur.
How the accident at Fukushima Daiichi occurred
Despite initial reassurances, about one hour after the earthquake we received another report which announced that the tsunami that followed the earthquake had disabled not only the electrical generators outside the Fukushima Daiichi plant, but also the diesel-fueled equipment intended for emergency back-up use. This meant there was a total loss of power at the plant.
Soon after, we received further news that the cooling system throughout the plant had shut down. I still remember the chill that ran down my spine when I heard this. I am not a specialist in nuclear energy, but as a university student I majored in applied physics and had gained knowledge of the fundamentals of the field. In a power plant, even when nuclear fission chain reactions have been stopped, the decay of nuclear fuel will continue to create massive amounts of heat for a considerable period. I knew that if the cooling systems were disabled there would be a meltdown.
Dysfunction at the government’s Nuclear Emergency Response Headquarters
By Japanese law, in the case of a severe accident in which the cooling systems of a nuclear power plant have been disabled, a Nuclear Emergency Response Headquarters is to be set up with the Prime Minister as its head. The Nuclear and Industrial Safety Agency (NISA) within the Ministry of Economy, Trade, and Industry (METI) oversees this disaster headquarters. The reasoning behind this is that the Prime Minister, as a politician, is generally not a specialist in nuclear energy, so a system is in place for government offi cials who are experts to offer him support.
Therefore, after the accident occurred I immediately summoned the director-general of NISA to obtain his views on three questions. What was the nature of the situation we were facing? How was it likely to develop? What measures should be taken? As it turned out, his response made no sense to me and I could not grasp the gist of his explanations. When I asked him if he was an expert in nuclear energy, this director-general of the Nuclear and Industrial Safety Agency replied that he was a Tokyo University graduate with a degree in economics!
I was stunned by this answer. Of course, since METI also deals with economic policy, it is not surprising for an offi cial to hold a degree in economics. But how can we make sense of the appointment of an economist to be director-general of an agency charged with responding to nuclear accidents? One can only conclude that the assignment of personnel within METI was based on the assumption that a severe nuclear accident would never occur in Japan. Two days later, government offi cers with expertise in nuclear energy transferred into NISA from other agencies and came to consult with me. It was only at that point that I was able to receive an informed assessment of the situation.
Worsening impact of the accident
Since many politicians and government offi cials have had experience in dealing with natural disasters like earthquakes and tsunami, they were able to propose response measures quite rapidly. However, there was not a single person among us who had previously dealt with what is classified as a “severe accident” at a nuclear power plant. I received words of advice from members of the Nuclear Safety Commission as well as from members of NISA. I had requested that the head of the Nuclear Safety Commission himself attend my meetings, but in the early moments, no information had arrived about th...