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Energy Northwest nuclear power plant near Richland may be offline until late July, more than 30 days longer than expected.
The Columbia Generating Station was 45 days in its refueling outage on Friday when Northwestern Energy has announced that work to replace a condenser coils of the plant would take more time than expected.
Block, originally planned for about 80 days, had the longest history of nuclear power plant designed to provide time to replace the condenser coils system.
Condenser turns the steam of boiling water nuclear reactor back into the water for reuse.
More than 1,000 workers were hired to work in the short-term failure, with about 400 for the replacement of the condenser coils. Most of the rest of these workers should be down with the task on June 15 as planned, said John Dobken, Energy Northwest spokesman rights.
Columbia Power Station provides a flow of about 1 million homes when it works and is a critical part of the power system of the Bonneville Power Administration, which markets the power plant.
BPA has requested that the plant is disconnected four days before the crash began on April 6 because of high water flows in the system of federal hydroelectric dam.
"It's the wettest year since 97 in terms of the second round," said Michael Milstein, a spokesman for the APB. This could reduce the potential cost of extended shutdown of the nuclear plant, but it is too early to predict the financial impacts, "he said.
If the snow melts is a progressive significant amount of hydroelectric power could be produced in July to reduce the possibility that BPA could not go on the market to buy the production of nuclear energy as usual.
Now BPA has a surplus of power because of high flow. For several hours Wednesday night, the closure of most of the electricity production in the region, including wind, with the exception of the power dam, which ran at full capacity.
BPA has backed the need to replace the capacitor in Colombia Generating Station to ensure the operation of the plant.
The capacitor 25 years of age has become less reliable in recent years. By replacing the 1150-megawatt Columbia Generating Station is planned to purchase 12 megawatts of electricity.
The project is budgeted to cost $ 113 million U.S., but the extra electricity is expected to pay for the new capacitor in time.
The work, carried out the Babcock and Wilcox requires surgery, the old condenser coils and slide over the outside of a motor vehicle to handle large loads. Then a dozen or capacitor modules, each weighing 100,000 pounds, must be installed.