Some incidents from this week’s NRC Event Reports page:
1. Unit 2 at the Arkansas Nuclear power plant shut down automatically from 100 per cent power Wednesday morning. The shutdown resulted from increased pressure in the Reactor Coolant System. According to this morning’s Reactor Status Report, the unit is back up to 31 per cent output.
2. The River Bend nuclear power plant in Louisiana sent a follow up report to the NRC this week, updating a December 2011 report concerning tritium in onsite test wells that exceeded EPA Safe Drinking Water standards. In the December incident, River Bend found tritium levels of 48,000 picocuries per liter, well over the EPA standard of 20,000 picocuries. The new results were staggering:
“On August 7, 2012, one of the six new groundwater monitoring wells installed near the monitoring well which yielded the positive results on December 20, 2011, produced a groundwater sample containing 432,733 picocuries per liter of tritium.”
Math’s not my strong suit, but isn’t that twenty times the EPA standard?
3. Yesterday morning, a non-licensed employee supervisor at the Quad Cities nuclear power plant in Illinois tested positive for alcohol in a Fitness for Duty test. This was a followup test after a previous incident involving that supervisor. The supervisor’s unescorted access to the facility has been terminated.