The Prairie Island Indian community says the failure of two backup generators at the Prairie Island nuclear plant is "very troubling," the Rochester Post Bulletin reports. Xcel Energy shut down one of its two reactors at the plant near Red Wing on Tuesday. Xcel assured no radiation was released.

The Prairie Island Indian Community is petitioning the federal government for a deeper look at the risks of on-site storage of radioactive waste. The secretary of the 882-member tribe, whose land sits next to the Prairie Island nuclear power plant, says outdoor casks holding casks of spent fuel rods have been there for decades longer than ever intended.

A security supervisor at Xcel Energy's Prairie Island nuclear power plant was fired after he was caught faking a drug test urine sample, the Nuclear Regulatory Commission says. The deception was uncovered when a test technician noticed the sample cup did not feel warm, the NRC said in an agency report that was not released until Tuesday -- two years after the incident.

Water leaks containing radioactive tritium and other chemicals from the Prairie Island Nuclear Power Plant pose 'no risk' according to a plant spokesman. The Red Wing Republican Eagle reports some 4,000 gallons of contaminated water have leaked from the facility since November. Officials say they reported the leaks to state and federal officials.

Xcel Energy says spending nearly $240 million to boost the power output at its Prairie Island nuclear plant near Red Wing is no longer a beneficial deal for customers, the Star Tribune reports. The Minneapolis-based utility first raised questions with regulators about the $310 million upgrade in March.

Officials at the Prairie Island nuclear power plant are investigating what it calls an "unusual event" after a piece of security equipment failed Wednesday afternoon, according to a news release. Xcel Energy said no radioactive material was released during the incident and there is no danger to the public or its workers.

Regulators say a security violation at Xcel Energy's nuclear plant near Red Wing was spotted during an October inspection and was corrected then. They won't reveal the details of the violation but say follow-up inspections are planned.

Nuclear Regulatory Commission inspectors are investigating what triggered a low level emergency at the Prairie Island Nuclear Power Plant near Red Wing Tuesday morning. Plant officials say employees detected an increase in reactor coolant system leakage.