Event Notification Report for April 11, 2012

AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE

"On April 11, 2012, a technician performing compaction tests using a CPN MC portable moisture density gauge (10 millicuries cesium-137; 50 millicuries americium-241), left the gauge during a test to prepare the next test location 20 to 30 feet away. A compaction roller ran over the gauge and shattered the gauge housing. The technician cordoned off the area and contacted the Radiation Safety Officer. The RSO contacted the Virginia Emergency Operations Center and returned the gauge to its storage area after ensuring the sources were inside their shields. Based on an onsite investigation by members of the Virginia Radioactive Materials Program, it was determined that no individual was likely to have received a radiation dose and that the gauge sources were secured in their shields. The licensee has contacted the gauge distributor to return the gauge."

Virginia Report No.: VA-12-001

DRILL MESSAGE INADVERTENTLY MISTAKEN FOR ACTUAL EVENT

"As part of a planned NRC Emergency Plan Exercise on 04/11/2012, local radio and television stations were given access to drill exercise messages to facilitate public awareness of the drill. These messages were plainly marked as 'drill' activity. At 12:40 p.m. CST, an email was sent to Entergy Executive Management showing the contents of a web page that stated in part 'A site area emergency was declared Wednesday at Arkansas Nuclear One, Unit 1, today at 10:18 a.m. by Entergy Operations Inc. officials...' A Little Rock, Arkansas local television station had posted a story on their internet web page at 10:53 a.m., indicating a real event, not a drill activity. The television station News Director stated that once the error was identified, the story was removed from their web page within a matter of minutes. This unplanned media event is being reported in accordance with 10CFR 50.72.(b)(2)(xi)."

The NRC Resident Inspector has been informed.

UNUSUAL EVENT DUE TO A FIRE IN THE 'A' MAIN CONDENSER

"At 1811 [CDT] hours a fire was reported inside the 'A' Main Condenser. The fire brigade was dispatched to combat the fire and the area was evacuated.

"An Unusual Event (HU4) was declared at 1826 [CDT] hours due to the fire being in the Protected Area boundary and not extinguished within 15 minutes of detection.

"The Claiborne County, Mississippi Fire Department was notified to provide assistance.

"At 1847 [CDT] hours the fire was reported to be extinguished.

"The Unusual Event was terminated at 1900 [CDT] hours."

The source of the fire is still under investigation. There were no personnel injuries.

The licensee notified the NRC Resident Inspector, Mississippi Emergency Management, Governor Office of Homeland Security, Claiborne County Sheriffs Department, Tensas Sheriffs Office, Mississippi Highway Patrol, and the Louisiana Department of Environmental Quality.

Notified DHS SWO, FEMA, NICC and Nuclear SSA via email.

BRIEF LOSS OF RHR PUMP DUE TO VOLTAGE TRANSIENT

"On 4/11/12 at 1807 EDT, with the plant shutdown in Mode 5 during Refueling Outage 15, the 'A' Residual Heat Removal pump tripped while operating in the Shutdown Cooling Mode. The pump trip was due to an isolation of the E1150F009 'Division 1 RHR Shutdown Cooling Inboard Isolation Valve.' This resulted in an interruption of primary decay heat removal for approximately 11 minutes. Approximate calculated time to boil was 23.1 hours. This is being reported under 10CFR50.72(b)(3)(v)(B) 'Any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to remove residual heat.'

"At the time of the pump trip, the station was attempting to restore power to Division 2 Bus 65E from the 64T cross tie bus. A voltage transient occurred due to a fault and caused a Group 4 (Shutdown Cooling/Head Spray) isolation signal. Abnormal Operating Procedure 20.205.01 'Loss of Shutdown Cooling,' was entered, the Group 4 isolation was reset and Shutdown Cooling was restored at 1818 EDT.

"An investigation is in progress to determine the cause of the bus fault."

The licensee has notified the NRC Resident Inspector.

FITNESS FOR DUTY - A CONTRACT SUPERVISOR TESTED POSITIVE ON A DRUG TEST

A non-licensed contract supervisor tested positive for illegal drugs on a random fitness-for-duty test. The individual's access has been terminated. Contact the Headquarters Operations Officer for additional details.

AGREEMENT STATE REPORT - UNDERDOSE TO PATIENT RECEIVING YTTRIUM-90 MICROSPHERES TREATMENT

The following information was sent by the State of Texas via email:

"On April 13, 2012, the Agency [Texas Department of Health] was notified by the licensee that a therapy event had occurred on April 11, 2012. A patient was prescribed 105 grays using Yttrium-90 microspheres. The patient received only 77.4 grays. The licensee stated that the reduced exposure was because a flow clamp was not in the fully opened position allowing microspheres to plate out in the flow tube instead of being administered to the patient. The licensee stated that there were no adverse effects on the patient.

"Additional information will be provided as it is received in accordance with SA-300."

Texas Report No: I-8948

A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.

AGREEMENT STATE REPORT - RADIOACTIVE MATERIAL DETECTED IN LOAD OF SCRAP METAL

The following information was provided by the State of Nevada via email:

On 4/11/12 a report was received [by Nevada State Health Division] that a truckload of radioactive scrap metal belonging to Top Dollar Recycling was refused in Southern California. This scrap steel originally came from a mine in Utah. On 4/12/12, the 40 foot semi-truck of scrap metal returned to Top Dollar Recycling and a site visit by the State Radiation Control Program (RCP) was conducted.

RCP staff took measurements of the semi-truck's scrap metal. Background reading was <10uR/hr, and the highest readings of 50uR/hr on contact were near the back of the truck on the driver's side. The truck was unloaded using a small bobcat loader, spread out and surveyed. One piece of scaffolding, about 4 foot long and bent roughly in half, had elevated readings of 180 uR/hr on contact and identified as Ra-226. The scaffold, which was tubular steel and hard packed with soil type debris, was the source of radiation.

The remainder of the semi-truck was unloaded, and all scaffolding metal was segregated and surveyed individually. No additional sources of radiation were identified. The other metal on the truck was also surveyed with no elevated readings. The outside of a very large pile (12' x 20') of metal from the same mine was scanned and no elevated reading were found.

Top Dollar Recycling took possession of the item, wrapped it in a plastic garbage bag before moving it to a sturdy container in the storage/control location.

Item Number: NV120011


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INVALID SYSTEM ACTUATION RESULTING FROM POST MAINTENANCE TESTING

"This 60-day telephone notification is being made per the reporting requirements specified by 10 CFR 50.73(a)(2)(iv)(A) and 10 CFR 50.73(a)(1) to describe an invalid actuation of a general containment isolation signal affecting more than one system.

"On April 11 , 2012, at 1515 hours Central Daylight Time (CDT), Operations personnel attempted to transfer the 3B 480V Reactor Motor Operated Valve (RMOV) Board to its alternate power supply for post maintenance testing on the alternate feeder breaker. The 3B 480V RMOV Board failed to transfer to the alternate power supply. Power to the 3B Reactor Protection System (RPS) Bus was lost resulting in a half-scram and actuation of Primary Containment Isolation System (PCIS) Group 6 with the initiation of all three trains (A, B, and C) of Standby Gas Treatment and the initiation of Train 'A' of the Control Room Emergency Ventilation System.

"Plant Conditions, which initiate PCIS Group 6 actuations, are Low Reactor Vessel Water Level, High Drywell Pressure, High Reactor Building Vent Radiation, or High Refuel Zone Radiation. At the time of the event, these conditions did not exist; therefore, the partial actuations were invalid.

"The affected equipment responded as designed. On April 11, 2012, at 1520 hours CDT, Operations personnel reset the half-scram from the loss of the 3B RPS Bus.

"This condition is the result of a bad connection of the breaker to panel contacts due to alignment and/or infrequent manipulation.

"There were no safety consequences or impact to the health and safety of the public as a result of these events.

"This event was entered Into the Corrective Action Program as Problem Evaluation Report 535537.

"The NRC Resident Inspector has been notified of this event."