Three Mile Island (book) - AbsoluteAstronomy.com

Three Mile Island: A Nuclear Crisis in Historical Perspective is a scholarly history of the Three Mile Island accident

Three Mile Island accident

The Three Mile Island accident was a core meltdown in Unit 2 of the Three Mile Island Nuclear Generating Station in Dauphin County, Pennsylvania near Harrisburg, United States in 1979....

, written by J. Samuel Walker

J. Samuel Walker

J. Samuel Walker is an American historian and book author based in Maryland. Although not the subject of any widely known biography, he is notable for his widely recognized contribution to the enduring historical record in his specific field of study. His particular focus is on the nuclear age,...

and published in 2004. Walker is the Nuclear Regulatory Commission

Nuclear Regulatory Commission

The Nuclear Regulatory Commission is an independent agency of the United States government that was established by the Energy Reorganization Act of 1974 from the United States Atomic Energy Commission, and was first opened January 19, 1975...

's historian and his book is the first detailed historical analysis since the accident.

The 1979 accident at Three Mile Island Nuclear Generating Station

Three Mile Island Nuclear Generating Station

Three Mile Island Nuclear Generating Station is a civilian nuclear power plant located on Three Mile Island in the Susquehanna River, south of Harrisburg, Pennsylvania. It has two separate units, known as TMI-1 and TMI-2...

in Pennsylvania

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

was "the single most important event in the fifty-year history of nuclear power regulation in the United States", according to Walker. Many commentators have seen the event as a turning point for the nuclear power

Nuclear power

Nuclear power is the use of sustained nuclear fission to generate heat and electricity. Nuclear power plants provide about 6% of the world's energy and 13–14% of the world's electricity, with the U.S., France, and Japan together accounting for about 50% of nuclear generated electricity...

industry in the United States.

Author

Three Mile Island is J. Samuel Walker's fourth book as the official historian of the U.S. Nuclear Regulatory Commission

Nuclear Regulatory Commission

(NRC). In the book's preface, Walker assures readers that he had complete independence in its authorship—that the NRC placed no restrictions on what could be said. However, Walker provides an historical account and does not evaluate the performance of the NRC.

Background and introduction

The Three Mile Island power station is near Harrisburg, Pennsylvania

Harrisburg, Pennsylvania

Harrisburg is the capital of Pennsylvania. As of the 2010 census, the city had a population of 49,528, making it the ninth largest city in Pennsylvania...

in the United States. The accident described in Three Mile Island began on Wednesday, March 28, 1979, and ultimately resulted in a partial core meltdown

Nuclear meltdown

Nuclear meltdown is an informal term for a severe nuclear reactor accident that results in core damage from overheating. The term is not officially defined by the International Atomic Energy Agency or by the U.S. Nuclear Regulatory Commission...

in Unit 2 of the nuclear power plant. Unit 2's pressurized water reactor

Pressurized water reactor

Pressurized water reactors constitute a large majority of all western nuclear power plants and are one of three types of light water reactor , the other types being boiling water reactors and supercritical water reactors...

was of 900 MWe

MWE

MWE may refer to:*Manufacturer's Weight Empty*McDermott Will & Emery*Midwest Express, an airline*Merowe Airport - IATA code*Multiword expressionMWe may refer to:*Megawatt electrical...

capacity. The scope and complexity of this reactor accident became clear over the course of five days, as a number of agencies at the local, state and federal levels tried to solve the problem and decide whether the ongoing accident required an emergency evacuation, and to what extent.

Walker's objective in Three Mile Island was to write a comprehensive history that would serve as an authoritative resource for both the interested public and the NRC. The book provides a detailed account of the causes of the accident and the response to it by the NRC, the state of Pennsylvania, and the White House.

The early chapters of Three Mile Island provide historical context for the accident, giving a brief overview of the government-supported growth of commercial nuclear power in the 1960s and 1970s. The emerging controversy

Anti-nuclear movement in the United States

The anti-nuclear movement in the United States consists of more than 80 anti-nuclear groups which have acted to oppose nuclear power or nuclear weapons, or both, in the United States. These groups include the Abalone Alliance, Clamshell Alliance, Institute for Energy and Environmental Research,...

during that period over the safety of nuclear power is also described. The public were concerned about the risk of nuclear accidents and about routine low-level releases of radioactivity.

Analysis

The main part of the book consists of six chapters, one covering each of the five days (Wednesday, March 28, through Sunday, April 1, 1979) of the crisis phase of the accident and another covering its immediate effects. Walker draws on a wide range of sources, but principally on the report of the Kemeny Commission, which President Carter appointed immediately after the disaster, and the Rogovin Report, which resulted from the NRC's own inquiry.

The chain of events that led to the crisis at the TMI plant included several minor equipment failures that operator errors drastically compounded, resulting in a major accident. The Three Mile Island accident is largely seen as a failure of crisis management

Crisis management

Crisis management is the process by which an organization deals with a major event that threatens to harm the organization, its stakeholders, or the general public. The study of crisis management originated with the large scale industrial and environmental disasters in the 1980's.Shrivastava, P....

. According to one reviewer of the book:

Reactor operators were not trained to deal with accident conditions, and the NRC had not established effective communication with utilities. Moreover, once the accident occurred, the lines of authority proved to be ill defined. The public received conflicting reports that caused needless panic and evacuations. It was these systemic weaknesses in the regulatory system that allowed gifted people to make the mistakes they did.

Large portions of the TMI-2 reactor core melted, though the fact that a partial meltdown had occurred did not become clear until 1985. The greatest source of concern during the TMI crisis was a hydrogen bubble that formed in the top of the pressure vessel which held the core:

Although opinions differed, some reactor experts feared that over time the hydrogen bubble might become flammable or, less likely, explosive by combining with free oxygen in the vessel. If the bubble burned or exploded, it could rupture the pressure vessel and force the damaged reactor core into the containment building. The loss of the vessel would not make a breach of containment inevitable, but it would increase the risk of a disastrous release of radiation.

In the end, the Three Mile Island accident, though it "caused a grave crisis, did not produce a public health disaster". In the face of a core meltdown, the pressure vessel held and there was no breach of the plant's containment structure. Only "tiny amounts of the most dangerous forms of volatile radiation escaped to the atmosphere". The TMI-2 cleanup took 11 years and cost about US$1 billion.

Walker suggests that the TMI accident incited widespread criticism of nuclear power technology, the nuclear industry, and the NRC. Critics faulted the industry and the NRC for their poor performance both before and after the accident. The international attention garnered by the crisis redoubled the determination of, and enhanced the credibility of, the anti-nuclear movement. Arguably, the United States nuclear industry has never recovered.

Walker reports that studies looking for long-term radiation effects resulting from the accident have reached conflicting conclusions, but it seems that any increase in cancer

Cancer

Cancer , known medically as a malignant neoplasm, is a large group of different diseases, all involving unregulated cell growth. In cancer, cells divide and grow uncontrollably, forming malignant tumors, and invade nearby parts of the body. The cancer may also spread to more distant parts of the...

s is slight enough to have occurred by chance.

Conclusions

Walker concludes that the TMI-2 accident left a mixed legacy. It did force regulatory and operational improvements on a reluctant industry, but it also increased opposition to nuclear power. In Walker's balanced analysis, neither the critics nor proponents are completely vindicated. Anti-nuclear advocates were right: a nuclear accident was likely, and the industry was not prepared for it. But their predicted worst-case accident, called the "China Syndrome

China Syndrome

The term China syndrome describes a nuclear reactor operations accident characterized by the severe meltdown of the core components of the reactor, which then burn through the containment vessel and the housing building, then notionally through the crust and body of the Earth until reaching...

", did not eventuate. For its part, the industry claimed that it had reformed itself, but perhaps by then few were listening.

Reception

There have been several published reviews of Three Mile Island. John F. Barber from The University of Texas states that Walker's insightful book captures the "high human drama surrounding the TMI accident", sets it in the context of the contentious debate over nuclear power in the seventies, and discusses the social, technical, and political issues it raised. Walker's authoritative account of the days and events surrounding the TMI accident captures the complexities of the situation, clears up some misconceptions, and discusses the aftermath and implications. According to Barber, Walker provides "thoughtful and sober grounds for the continued debate over the role of nuclear power in our contemporary world".

In a review for Times Higher Education, Jack Harris says that Walker is an extremely good writer and even those who do not specialise in technical fields will derive enjoyment from the book. According to Harris, Walker has unique experience as historian to the NRC which has placed him in an unrivalled position to tell the TMI story. But Harris identifies some omissions in the book. There is little on the other two major nuclear that threatened large civilian populations: the Windscale fire

Windscale fire

The Windscale fire of 10 October 1957 was the worst nuclear accident in Great Britain's history, ranked in severity at level 5 on the 7-point International Nuclear Event Scale. The two piles had been hurriedly built as part of the British atomic bomb project. Windscale Pile No. 1 was operational in...

(UK, October 1957), and the Chernobyl disaster

Chernobyl disaster

The Chernobyl disaster was a nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in Ukraine , which was under the direct jurisdiction of the central authorities in Moscow...

(Ukraine, April 1986). Harris states that Windscale threw up similar problems to TMI, particularly relating to whether large-scale evacuations should have been initiated, but he could find no reference to the Windscale accident in the book's index which is surprising in a book that aims to put TMI in historical perspective.

In a review for New Scientist
New Scientist
New Scientist is a weekly non-peer-reviewed English-language international science magazine, which since 1996 has also run a website, covering recent developments in science and technology for a general audience. Founded in 1956, it is published by Reed Business Information Ltd, a subsidiary of...

, Rob Edwards states that Walker provides a lucid account of the Three Mile Island accident, which is "riveting because of its detail". It gives a graphic insight into the chaos and confusion of the five-day crisis, and shows how the nuclear industry, the regulators and the government all "initially played down the risks, then had to eat their words". Some 144,000 people were evacuated, but Walker points out that "if the full extent of the core meltdown had been known at the time, hundreds of thousands more would have been told to go". Edwards says a "catastrophe was avoided — but only by luck".

Thomas Wellock

Thomas Wellock

Thomas Wellock is the historian for the U.S. Nuclear Regulatory Commission. Trained as both an engineer and a historian, he writes scholarly histories of the regulation of commercial nuclear energy....

from Central Washington University

Central Washington University

Central Washington University, often abbreviated CWU, is a public university in Ellensburg, Washington in the United States.This location was selected by the state legislature as a consolation prize after Ellensburg lost its bid to be state capital...

recommended the book "for all libraries and students of politics, government bureaucracy, and environmental history".

Bernard L. Cohen, from the University of Pittsburgh

University of Pittsburgh

The University of Pittsburgh, commonly referred to as Pitt, is a state-related research university located in Pittsburgh, Pennsylvania, United States. Founded as Pittsburgh Academy in 1787 on what was then the American frontier, Pitt is one of the oldest continuously chartered institutions of...

, criticized the book in terms of the scope and quality of its technical content: "The book contains little technical information, and many of the technical explanations that do appear range from inadequate to misleading to incorrect."

External links

The source of this article is wikipedia, the free encyclopedia. The text of this article is licensed under the GFDL.