| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
06/08/2009 - 06/09/2009 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 45104 | Facility: BRAIDWOOD
Region: 3 State: IL
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JAMES SMIT
HQ OPS Officer: MARK ABRAMOVITZ | Notification Date: 05/29/2009
Notification Time: 04:49 [ET]
Event Date: 05/28/2009
Event Time: 21:40 [CDT]
Last Update Date: 06/08/2009 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(B) - POT RHR INOP
| Person (Organization):
JULIO LARA (R3DO)
|
| 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 LOSS OF CONTROL POWER TO ECCS VALVES
"At 2140 on 5/28/09 Braidwood Station identified a loss of control power for a Safety Related MCC (Motor Control Center) which provided power to SVAG (Single Valve Actuation Group) valves associated with both trains of the ECCS system. The MCC is normally de-energized to maintain the valve power removed in accordance with Tech Specs for ECCS. Loss of the control power for the associated MCC would prevent operation of these valves, which would prevent realignment of components required for transfer to cold leg recirculation and hot leg recirculation for long term core cooling.
"Entry was made into LCO 3.5.2, ECCS Operating, and LCO 3.0.3 due to inoperability of both trains of ECCS based on the inability to realign portions of both trains of the ECCS system from injection to cold leg recirculation and subsequent hot leg recirculation. At 2230 on 5/28/09 preparations had been completed for ramp off line per LCO 3.0.3.
"Troubleshooting was performed and a blown control power fuse was identified and replaced at 2319 on 5/28/09. No Unit ramp was initiated.
"The NRC Resident Inspector was notified."
* * * RETRACTION ON 6/8/09 AT 12:27 EDT FROM KELLER TO HUFFMAN * * *
"The purpose of this report is to retract the ENS report made on May 29, 2009 at 04:49 EDT (ENS #45104) under 10CFR50.72(b)(3)(v)(B), a condition that could have prevented fulfillment of a safety function.
"The initial report was made based on identification of a loss of control power for a Safety Related MCC (Motor Control Center), which provided power to SVAG (Single Valve Actuation Group) valves associated with both trains of the ECCS system. The MCC is normally de-energized to maintain the valve power removed in accordance with Technical Specifications. The loss of the control power for the associated MCC would prevent operation of these valves. It was initially concluded that this condition would prevent realignment of components required for transfer to cold leg recirculation and hot leg recirculation for long term core cooling. Therefore, the referenced ENS report was made for a loss of safety function.
"Subsequent review of UFSAR information and previously developed analytical data determined that the safety function for ECCS was not lost due to the event. The failure of the MCC to energize would have NOT affected the ability of the 1B ECCS train to perform its design function of cold and hot leg recirculation.
"A blown control power fuse, the cause of the event, was identified and replaced on May 28, 2009 at 23:19 hours.
"The NRC Senior Resident Inspector has been notified of this retraction."
R3DO(Pelke) notified. |
| General Information or Other | Event Number: 45113 | Rep Org: ARKANSAS DEPARTMENT OF HEALTH
Licensee: SHAW MID STATES PIPE FABRICATING
Region: 4
City: State: AR
County:
License #: ARK-074903310
Agreement: Y
Docket:
NRC Notified By: STEVE MACK
HQ OPS Officer: HOWIE CROUCH | Notification Date: 06/03/2009
Notification Time: 13:03 [ET]
Event Date: 06/01/2009
Event Time: 15:45 [CDT]
Last Update Date: 06/03/2009 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
RYAN LANTZ (R4DO)
ANGELA MCINTOSH (FSME)
| Event Text AGREEMENT STATE REPORT - UNABLE TO RETRACT RADIOGRAPHY SOURCE
The following information was obtained from the State of Arkansas via email:
"On June 1, 2009 at 1600, the licensee notified the Department [Arkansas Department of Health] that while retracting the source after a shot, the source stopped and could not be retracted into the camera and could not be moved into the collimator. This occurred at 1545. The radiography is conducted inside an open top and open ended cell at the facility. The radiography crew evacuated the cell area, adjacent work areas and established a 2 mR/hr boundary around the cell. Observing from the far end of the cell, the radiography crew established that the piece of pipe being radiographed fell from the work table onto the guide tube. The radiography crew notified the State of Arkansas and also QSA Global in Baton Rouge, LA.
"The State of Arkansas sent two Health Physicists to the facility. [They arrived] at 2320 and remained on site throughout the source retrieval.
"QSA Global responded to the site at 0030 on the morning of June 2, 2009. Using portable shielding and standard radiation safety practices, QSA Global personnel were able to move the source into the collimator, cut out the crimped guide tube, and return the source to the camera at 0230 on the morning of June 2.
"The Camera involved: Industrial Nuclear Company, Inc., Model IR-100, Serial Number 4150.
"The Source involved: QSA Global, Model 87703, Serial 49390B, manufactured on April 8, 2009 and contained 64 Curies at the time of the incident.
"The Camera has been taken out of service for repair and inspection.
"The State of Arkansas is awaiting a report from QSA Global and the licensee." | |