Introduction
The Trojan Nuclear Power Plant, located approximately 30 miles north of Portland, Oregon, stands as a notable chapter in the history of nuclear energy in the United States. This pressurized water reactor was not only the first and only commercial nuclear power plant built in Oregon, but it also became a focal point for public opposition to nuclear energy. Throughout its operational lifespan from 1976 to 1992, the Trojan plant faced significant challenges, including technical failures and public protests. Ultimately, its story concludes with decommissioning efforts that spanned several years and culminated in the demolition of its structures in 2006.
Historical Background
The Trojan Nuclear Power Plant’s site originally hosted the Trojan Powder Company, which produced explosives on a vast 634-acre parcel. In 1967, the Portland General Electric (PGE) company recognized the potential for a nuclear power facility at this location. Construction commenced on February 1, 1970, marking the beginning of a journey that would be fraught with both technical and public relations challenges.
After several years of construction, the plant achieved its first criticality on December 15, 1975. Just eight days later, on December 23, it connected to the electrical grid. The plant officially began commercial operations on May 20, 1976, under a license set to expire in 2011. At that time, the Trojan plant was notable for being the world’s largest pressurized water reactor, with an output capacity of 1,130 megawatts and a construction cost of approximately $460 million.
Public Opposition and Protests
From its inception, the Trojan Nuclear Power Plant faced considerable public opposition. Various groups such as the Trojan Decommissioning Alliance, Forelaws on the Board, and Mothers for Peace organized non-violent protests against its construction and operation. These protests were prominent from 1977 onward and often resulted in arrests as activists sought to make their voices heard regarding safety concerns and environmental impacts.
One significant incident occurred in March 1978 when the plant went offline for routine refueling but remained idle for nine months due to necessary modifications for earthquake resistance. This delay followed the discovery of construction errors and an unrecognized fault line near the plant. The operators subsequently took legal action against the builders, leading to an undisclosed out-of-court settlement.
Operational Challenges and Closures
The operational history of the Trojan Nuclear Power Plant was marked by significant technical difficulties. Notably, just four years into its operations, premature cracking of steam tubes was discovered within the steam generators—components designed to last throughout the plant’s operational life. In October 1979, this issue forced another shutdown that lasted until year’s end.
As time progressed, further complications emerged. In 1984, an extended shutdown occurred due to difficulties in restarting the plant. Public sentiment continued to shift against nuclear power during this period, culminating in a ballot measure during the 1980 election that prohibited new nuclear plants from being built without federally approved waste facilities—a measure that passed with over half of voter support.
Closure Decisions
In 1992, following years of declining operational reliability and escalating costs associated with repairs—especially after a leak of radioactive water—the decision was made by PGE to permanently close Trojan. Despite various ballot measures aiming to expedite its closure being defeated by wide margins in prior years, PGE ultimately acknowledged insurmountable issues with continuing operations.
Decommissioning Process
The decommissioning process began in earnest after closure in 1993. By 2003, spent fuel had been transferred from cooling pools into concrete and steel storage casks. One unique aspect of this decommissioning involved transporting radioactive equipment from Trojan intact to Hanford Nuclear Reservation in Washington State for burial—a move that had not previously been executed with commercial reactors.
Demolition and Legacy
The demolition phase started after most decommissioning efforts were completed by early 2006. The iconic cooling tower—standing at an impressive height of 499 feet—was brought down through controlled implosion on May 21, marking a historic moment as it represented the first cooling tower at a U.S. nuclear facility to be demolished in this manner.
In totality, demolition costs reached around $230 million when factoring in expenses related to conventional demolition methods and ongoing management costs for storing used nuclear fuel. Even after physical structures were dismantled or demolished, remnants such as civil defense sirens remained as reminders of the plant’s presence and legacy within surrounding communities.
Cultural Significance
The Trojan Nuclear Power Plant has also left its mark on popular culture. Notably, during production for the film “The China Syndrome” in 1979, members of the crew toured the facility extensively for research purposes. They were allowed access to take photographs of control room settings which eventually influenced set designs used during filming.
Conclusion
The story of the Trojan Nuclear Power Plant encapsulates many themes prevalent in discussions about nuclear energy—from ambitious beginnings through public opposition and operational challenges to eventual closure and demolition. While it represented a significant portion of Oregon’s electrical generation capacity during its operational years, it also served as a catalyst for discussions about safety protocols and environmental impacts associated with nuclear power facilities. The legacy of Trojan continues to influence perspectives on energy production within Oregon and beyond.
Artykuł sporządzony na podstawie: Wikipedia (EN).