.XcelEnergy said it would temporarily shut down its Monticello nuclear power plant after it detected radioactive tritium being leaked into groundwater nearby for the second time in two years.
Xcel said Friday that the leakage began earlier this week and spilled an estimate of “hundreds of gallons” of contaminated water at the Minnesota plant, caused by temporary repairs made to a defective section of the pipe."Upon investigation, operators discovered the temporary solution was, over the past two days, no longer capturing 100% of the leaking water," the utility said.
The tritiated water did not make it into the drinking water supply and had not yet reached the Mississippi River, which runs alongside the plant. In November, the pipe leaked 400,000 gallons of tritium-contaminated water — news that was revealed to the public for the first time last week.
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