The Wolf Creek Nuclear Generating Station, the only nuclear power plant in Kansas, remains shut down due to problems with an air conditioning compressor. The unit is needed to cool safety-related equipment.
Operators shut down the reactor late Wednesday afternoon, when they noticed abnormal vibration in the compressor while doing maintenance work.
The Nuclear Regulatory Commission has taken the only nuclear power plant in Kansas off of its special "watch list" for plants with problems needing closer scrutiny, but some new issues have arisen.
The NRC has listed Wolf Creek in the “degraded performance” category for more than a year. That’s the next-to-the-lowest of four ratings. Those problems have been resolved, and the plant has been upgraded to normal status.