| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
04/04/2011 - 04/05/2011 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 46720 | Facility: WOLF CREEK
Region: 4 State: KS
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP
NRC Notified By: MARK JENKINS
HQ OPS Officer: HOWIE CROUCH | Notification Date: 04/04/2011
Notification Time: 01:51 [ET]
Event Date: 04/04/2011
Event Time: 00:30 [CDT]
Last Update Date: 04/04/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
RYAN LANTZ (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Refueling | 0 | Refueling | Event Text EMERGENCY SIRENS OUT OF SERVICE DUE TO SEVERE WEATHER
"[Three] of the [eleven] emergency notification sirens became non functional when a severe thunderstorm passed through the area. The Coffey County Sheriffs office reported that they received telemetry notifications that the sirens were out of service. Pursuant to 50.72(b)(3)(xiii), the loss of alert systems (sirens) greater than one hour require an 8-hour notification. The exact cause of the siren loss (i.e. power outage, downed pole, etc) is not known and, as of the time of reporting, the duration of the siren outage cannot be determined.
"No damage to plant equipment or structures was identified from the severe weather and all outside work activities has resumed.
"The NRC Resident Inspector has been notified."
* * * RETRACTED AT 1430 EDT ON 04/04/11 FROM WARREN BRANDT TO DONG PARK * * *
"The licensee is retracting this event based on the following:
"The emergency notification sirens have a battery backup when normal power is lost. Normal power was restored in approximately four hours. It was verified that the three sirens were powered from the battery backup during the time that normal power was unavailable and were always functional. Therefore, this event is not reportable per 10 CFR 50.72.
"The NRC Resident Inspector has been notified."
Notified R4DO (OKeefe). |
| Power Reactor | Event Number: 46721 | Facility: SOUTH TEXAS
Region: 4 State: TX
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BILLY HERZOG
HQ OPS Officer: HOWIE CROUCH | Notification Date: 04/04/2011
Notification Time: 11:02 [ET]
Event Date: 04/04/2011
Event Time: 02:24 [CDT]
Last Update Date: 04/04/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xii) - OFFSITE MEDICAL
| Person (Organization):
NEIL OKEEFE (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown | Event Text TRANSPORT OF CONTAMINATED INJURED PERSON TO AN OFFSITE FACILITY
"On 4/4/11, South Texas Project Unit 1 was in a scheduled refueling outage with workers performing activities in the Reactor Containment Building (RCB). At 0224 [CDT], the Unit 1 control room received a report of an individual in the reactor cavity with a medical emergency. An ambulance left the site at 0400 [CDT] on 4/4/11 to transport the contaminated individual to the Matagorda Regional Medical Center. The individual was decontaminated at Matagorda Regional Medical Center. It was determined that the contamination levels on the individual were low with 400 - 500 cpm on clothing and 1200 cpm in the individual's hand. There was no spread of contamination in either the ambulance or at the hospital.
"This was determined to be reportable within 8 hours as required by 10 CFR 50.72(b)(3)(xii)."
Site Health Physics personnel accompanied the injured individual in the site-owned ambulance. Decontamination was performed by the South Texas HP technicians.
The licensee has notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 46722 | Facility: CRYSTAL RIVER
Region: 2 State: FL
Unit: [3] [ ] [ ]
RX Type: [3] B&W-L-LP
NRC Notified By: C. McKIM
HQ OPS Officer: PETE SNYDER | Notification Date: 04/04/2011
Notification Time: 17:35 [ET]
Event Date: 04/04/2011
Event Time: [EDT]
Last Update Date: 04/04/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
OTHER UNSPEC REQMNT
| Person (Organization):
MARVIN SYKES (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 3 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown | Event Text PRESS RELEASE CONCERNING ADDITIONAL CONTAINMENT DELAMINATION
"Progress Energy Florida, Inc. has notified the Florida Public Service Commission (FPSC) that the Crystal River Unit 3 (CR-3) Nuclear Plant will remain out of service while the company conducts a thorough engineering analysis and review of a new delamination. Options to return the plant to service will be analyzed after the report is complete. The company cannot estimate a return to service date for CR-3 at this time.
"In mid-March, final retensioning of tendons within the CR-3 containment building was suspended while engineers investigated evidence of an additional delamination (or separation) resulting from the tendon retensioning work. The initial damage occurred in late 2009 in the concrete at the periphery of the containment building while creating an opening in the structure to facilitate the replacement of the steam generators inside. The unit was already shut down for refueling and maintenance at the time the damage was found.
"The plant has been shut down since September 2009 and there continues to be no threat to public health and safety. Progress Energy continues to coordinate repair and restart plans with Nuclear Regulatory Commission officials."
The licensee notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 46723 | Facility: FORT CALHOUN
Region: 4 State: NE
Unit: [1] [ ] [ ]
RX Type: (1) CE
NRC Notified By: ERICK MATZKE
HQ OPS Officer: DONG HWA PARK | Notification Date: 04/04/2011
Notification Time: 19:51 [ET]
Event Date: 04/04/2011
Event Time: 15:00 [CDT]
Last Update Date: 04/04/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(B) - POT RHR INOP
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
NEIL OKEEFE (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text SCAFFOLDING AFFECTING SAFETY RELATED EQUIPMENT
"At 1500 [CDT], a concern was raised with regard to scaffolding that had been constructed around safety related equipment in the Auxiliary Building which contains both trains of safety injection and containment spray. As a result T.S. 2.0.1 was entered (which is the Fort Calhoun equivalent to standard T.S. 3.0.3). The scaffolding in question was removed and the equipment was returned to operable status and T.S. 2.0.1 was exited at 1726 [CDT]."
The NRC Resident Inspector has been notified. | |