| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
03/12/2013 - 03/13/2013 ** EVENT NUMBERS ** |
 | General Information | Event Number: 48816 | Rep Org: FISHER CONTROLS INTERNATIONAL, LLC
Licensee: FISHER CONTROLS INTERNATIONAL, LLC
Region: 3
City: MARSHALLTOWN State: IA
County:
License #:
Agreement: Y
Docket:
NRC Notified By: CHAD ENGLE
HQ OPS Officer: JOHN SHOEMAKER | Notification Date: 03/12/2013
Notification Time: 17:10 [ET]
Event Date: 03/08/2013
Event Time: [CDT]
Last Update Date: 03/12/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.55(e) - CONSTRUCT DEFICIENCY
| Person (Organization):
GLENN DENTEL (R1DO)
KATHLEEN O'DONOHUE (R2DO)
BILLY DICKSON (R3DO)
DALE POWERS (R4DO)
NRR 50.55 COORD ()
| Event Text CONSTRUCTION DEFICIENCY INVOLVING LOOSE PROXIMITY SWITCH TARGET MAGNETS
The following is a summary of information received from Fisher Control International, LLC. via facsimile:
"Equipment Affected By This Information Notice: Items provided to Westinghouse Electric Company, LLC on purchase order 4500325241. TAG# APP-PV-20-ZOD-101, Fisher Serial numbers 19447200 and 19451246.
"Purpose: The purpose of this Fisher Information Notice (FIN) is to alert Westinghouse Electric Company, LLC (WEC) that as of 1/30/2013, Fisher Controls International, LLC. (Fisher) became aware of the possibility of a situation which may affect the performance of the aforementioned equipment, including their safety-related function.
"We [Fisher] are informing WEC of this circumstance in accordance with Section 50.55(e) of 10CFR50.
"Applicability: This notice applies only to the subject equipment supplied by Fisher, identified above, that was provided to WEC.
"Discussion: It was determined that at least one of the proximity switch target magnet (find #203 on the drawing GE48644) installed on the subject equipment was loose when received by WEC. Therefore, the switch would not have been operable.
"Action Required: Fisher will perform the repair work on-site at Dockside Logistics. In addition, a Corrective Action Request (CAR) has been initiated by Fisher to prevent reoccurrence of this issue, mandating procedures to functionally test all accessories.
"10CFR50.55 Implications: Fisher requests that the recipient of this notice review it and take appropriate action in accordance with 10CFR50.55."
"If there are any technical questions or concerns, please contact:
George Baitinger
Manager, Quality
Fisher Controls International, LLC
301 South First Avenue
Marshalltown, IA. 50158
Fax: (641) 754-2854
Phone: (641) 754-2026
George.Baitinger@Emerson.com"
Fisher Information Notice FIN 2013-02. |
| Power Reactor | Event Number: 48817 | Facility: TURKEY POINT
Region: 2 State: FL
Unit: [3] [ ] [ ]
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: CHRIS TRENT
HQ OPS Officer: CHARLES TEAL | Notification Date: 03/12/2013
Notification Time: 17:31 [ET]
Event Date: 03/12/2013
Event Time: 14:31 [EDT]
Last Update Date: 03/12/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
| Person (Organization):
KATHLEEN O'DONOHUE (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 3 | A/R | Y | 3 | Startup | 0 | Hot Standby | Event Text AUTOMATIC REACTOR TRIP DUE TO TURBINE INLET PRESSURE PERTURBATION
"Unit 3 experienced an automatic reactor trip from approximately 3% power. The turbine was off-line and undergoing testing following a control valve position indication repair. A turbine inlet pressure channel perturbation momentarily actuated the 'Reactor Trip by Turbine Trip' protection, causing the Unit 3 reactor to trip. Unit 3 is currently stable in Mode 3. No other complications were noted following the reactor trip. The cause of the turbine inlet pressure channel perturbation is currently under investigations."
All control rods fully inserted. Normal feedwater is supplying the steam generators and decay heat removal is to atmosphere via the atmospheric steam dumps. There is no primary to secondary leakage. Unit 3 is in a normal shutdown offsite electrical power alignment. There is no impact on Unit 4.
The NRC Resident Inspector has been notified. |
| Power Reactor | Event Number: 48818 | Facility: SAINT LUCIE
Region: 2 State: FL
Unit: [1] [ ] [ ]
RX Type: [1] CE,[2] CE
NRC Notified By: ANDREW TEREZAKIS
HQ OPS Officer: JOHN SHOEMAKER | Notification Date: 03/12/2013
Notification Time: 18:01 [ET]
Event Date: 03/12/2013
Event Time: 14:51 [EDT]
Last Update Date: 03/12/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
| Person (Organization):
KATHLEEN O'DONOHUE (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | A/R | Y | 100 | Power Operation | 0 | Hot Standby | Event Text AUTOMATIC REACTOR TRIP ON THERMAL MARGIN/LOW PRESSURE
"On 3/12/13 at 1451 EDT, during normal full power operations, Unit 1 automatically tripped due to the Thermal Margin/ Low Pressure trip setpoint being exceeded. The trip was uncomplicated and all CEAs [control element assembly] fully inserted when the reactor was tripped. Main Steam Safety valves lifted momentarily post trip and reseated. No automatic safety system actuations were required and none occurred. The cause and details of the automatic trip are under investigation.
"The plant is stable in Mode 3 at normal operating temperature and pressure. RCS Heat Removal is being maintained with Main Feedwater and Atmospheric Dump Valves in operation. The operation of the Steam Bypass Control System is under review by Engineering. The Offsite power grid is available and stable."
The licensee has notified the NRC Resident Inspector and there was no impact on Unit 2. |
| Power Reactor | Event Number: 48819 | Facility: DIABLO CANYON
Region: 4 State: CA
Unit: [ ] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: MICHAEL QUITTER
HQ OPS Officer: STEVE SANDIN | Notification Date: 03/13/2013
Notification Time: 00:58 [ET]
Event Date: 03/12/2013
Event Time: 17:06 [PDT]
Last Update Date: 03/13/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD
| Person (Organization):
DALE POWERS (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | N | 0 | Refueling | 0 | Refueling | Event Text UNIT 2 LOSS OF SHUTDOWN MONITORING INSTRUMENTATION SYSTEM
"On March 12, 2013, at 1706 PDT, with the reactor coolant system not intact, plant operators identified [an] unexpected increase in nuclear reactivity count rate as indicated by source range instrumentation channel N-32. This increase was NOT indicated on redundant wide range instrumentation channels N-51 and N-52. Operators identified that technicians working in the area of the N-32 cable routing had bumped the cabling, resulting in the false increase in the count rate. The source range channel N-32 was subsequently declared inoperable. Prior to this event the other source range channel N-31 had been declared inoperable.
"The above event resulted in loss of control room audible indication required by DCPP [Diablo Canyon Power Plant] technical specification to monitor the core reactivity condition and consequently caused loss of the monitoring system. Operators retained capability of monitoring core reactivity conditions through use of the two wide range nuclear instrumentation channels N-51 and N-52.
"In response to this concern, plant operators verified all core alterations were suspended, verified boron concentration was within acceptable limits for current conditions, suspended operations that could dilute the boron concentration, verified reactor trip breakers were open and control rods incapable of withdrawal, and initiated actions to restore to service one of the source range instrumentation channels with its associated control room audible count rate indication.
"NRC Resident Inspectors have been notified."
* * * UPDATE AT 0848 EDT ON 3/13/13 FROM MICHAEL QUITTER TO DONG PARK * * *
"This is an update to EN #48819 reported on March 12, 2013 at 2158 PDT.
"This update informs the NRC that PG&E, in accordance with provisions of TS 3.0.4b, will be restoring the source range instrumentation channel N-32 to service in Mode 5, maintaining the availability and monitoring of the wide range instrumentation channels while in Mode 5 until the source range channel is returned to service."
The licensee has notified the NRC Resident Inspector. Notified R4DO (Powers). |
| Power Reactor | Event Number: 48820 | Facility: WOLF CREEK
Region: 4 State: KS
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP
NRC Notified By: EDWARD WINN
HQ OPS Officer: VINCE KLCO | Notification Date: 03/13/2013
Notification Time: 03:11 [ET]
Event Date: 03/13/2013
Event Time: 01:49 [CDT]
Last Update Date: 03/13/2013 | Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
| Person (Organization):
DALE POWERS (R4DO)
ELMO COLLINS (RA)
JOHN LUBINSKI (NRR)
JEFFERY GRANT (IRD)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Defueled | 0 | Defueled | Event Text UNUSUAL EVENT DECLARED DUE TO INOPERABLE EMERGENCY DIESEL GENERATORS
At 0149 CDT on 3/13/2013, Wolf Creek declared an Unusual Event due to inoperability of both on-site emergency diesel generators. While the A-EDG (Emergency Diesel Generator) was out of service due to planned maintenance, the B-EDG experienced a loss of control power. The cause is currently under investigation. Offsite power is available and providing electrical power to the Unit.
The licensee notified state and local agencies and the NRC Resident Inspector.
Notified DHS, FEMA, DHS NICC and NuclearSSA (email). | |