Event Notification Report for May 12, 2010
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/11/2010 - 05/12/2010
Fuel Cycle Facility
Event Number: 45919
Facility: WESTINGHOUSE ELECTRIC CORPORATION
Region: 2 State: SC
Unit: [] [] []
RX Type: URANIUM FUEL FABRICATION
NRC Notified By: CARL SNYDER
HQ OPS Officer: CHARLES TEAL
Region: 2 State: SC
Unit: [] [] []
RX Type: URANIUM FUEL FABRICATION
NRC Notified By: CARL SNYDER
HQ OPS Officer: CHARLES TEAL
Notification Date: 05/12/2010
Notification Time: 13:47 [ET]
Event Date: 05/12/2010
Event Time: 12:20 [EDT]
Last Update Date: 05/12/2010
Notification Time: 13:47 [ET]
Event Date: 05/12/2010
Event Time: 12:20 [EDT]
Last Update Date: 05/12/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
PART 70 APP A (c) - OFFSITE NOTIFICATION/NEWS REL
10 CFR Section:
PART 70 APP A (c) - OFFSITE NOTIFICATION/NEWS REL
Person (Organization):
KATHLEEN O'DONOHUE (R2DO)
KING STABLEIN (NMSS)
KATHLEEN O'DONOHUE (R2DO)
KING STABLEIN (NMSS)
OFFSITE NOTIFICATION
"On May 11, 2010, Westinghouse reviewed the vendor chemical laboratory analysis for the Total Suspended Solids (TSS) parameter result for the April 28, 2010, NPDES [National Pollutant Discharge Elimination System] liquid effluent 24-hour composite sample. The sample result indicated that the wastewater discharged from the Westinghouse Columbia plant to the Congaree River during the 24-hour period preceding the April 28th sampling contained 93.16 pounds of TSS, which exceeds the daily maximum permit limit of 64.0 pounds per day. The April 28, 2010 result also produced a monthly average of 46.39 pounds, which exceeds the monthly average permit limit of 32.0 pounds per day. [The] investigation regarding the cause of this high TSS result is still ongoing.
"Liquid discharges from the Columbia Plant are regulated with regard to chemical pollutants through the SC-DHEC/EPA [South Carolina - Department of Health and Environmental Control/Environmental Protection Agency] administered NPDES permit SC#0001848. WEC [Westinghouse Electric Company] is required to notify SC-DHEC of non-compliance conditions which exceed any effluent limitation."
"On May 11, 2010, Westinghouse reviewed the vendor chemical laboratory analysis for the Total Suspended Solids (TSS) parameter result for the April 28, 2010, NPDES [National Pollutant Discharge Elimination System] liquid effluent 24-hour composite sample. The sample result indicated that the wastewater discharged from the Westinghouse Columbia plant to the Congaree River during the 24-hour period preceding the April 28th sampling contained 93.16 pounds of TSS, which exceeds the daily maximum permit limit of 64.0 pounds per day. The April 28, 2010 result also produced a monthly average of 46.39 pounds, which exceeds the monthly average permit limit of 32.0 pounds per day. [The] investigation regarding the cause of this high TSS result is still ongoing.
"Liquid discharges from the Columbia Plant are regulated with regard to chemical pollutants through the SC-DHEC/EPA [South Carolina - Department of Health and Environmental Control/Environmental Protection Agency] administered NPDES permit SC#0001848. WEC [Westinghouse Electric Company] is required to notify SC-DHEC of non-compliance conditions which exceed any effluent limitation."
Power Reactor
Event Number: 45920
Facility: CALVERT CLIFFS
Region: 1 State: MD
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: KEVIN UMPHREY
HQ OPS Officer: CHARLES TEAL
Region: 1 State: MD
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: KEVIN UMPHREY
HQ OPS Officer: CHARLES TEAL
Notification Date: 05/12/2010
Notification Time: 15:35 [ET]
Event Date: 05/12/2010
Event Time: 13:51 [EDT]
Last Update Date: 05/12/2010
Notification Time: 15:35 [ET]
Event Date: 05/12/2010
Event Time: 13:51 [EDT]
Last Update Date: 05/12/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
HAROLD GRAY (R1DO)
HAROLD GRAY (R1DO)
| 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 |
RPS ACTUATION - LOAD REJECT
"At 1351 hrs. EDT on May 12, 2010, a Calvert Cliffs Unit 1 Reactor trip was generated by a complete load rejection when a main generator output breaker opened while its redundant breaker was opened for planned maintenance.
"The generator output breaker trip caused Reactor Coolant System (RCS) pressure to rise to the Reactor Protection System (RPS) High Pressure setpoint, which opened both Power Operated Relief Valves (PORVs). Both PORVs reclosed when RCS pressure was reduced to normal.
"All Control Rods fully inserted on the trip. Normal heat removal methods are currently in progress."
Unit 1 is in a normal shutdown electrical lineup and there was no impact on Unit 2.
The NRC Resident Inspector has been notified by the licensee.
"At 1351 hrs. EDT on May 12, 2010, a Calvert Cliffs Unit 1 Reactor trip was generated by a complete load rejection when a main generator output breaker opened while its redundant breaker was opened for planned maintenance.
"The generator output breaker trip caused Reactor Coolant System (RCS) pressure to rise to the Reactor Protection System (RPS) High Pressure setpoint, which opened both Power Operated Relief Valves (PORVs). Both PORVs reclosed when RCS pressure was reduced to normal.
"All Control Rods fully inserted on the trip. Normal heat removal methods are currently in progress."
Unit 1 is in a normal shutdown electrical lineup and there was no impact on Unit 2.
The NRC Resident Inspector has been notified by the licensee.
General Information or Other
Event Number: 45921
Rep Org: DRESSER-RAND
Licensee: DRESSER RAND
Region: 1
City: WELLSVILLE State: NY
County:
License #:
Agreement: Y
Docket:
NRC Notified By: JOE MENICHINO
HQ OPS Officer: CHARLES TEAL
Licensee: DRESSER RAND
Region: 1
City: WELLSVILLE State: NY
County:
License #:
Agreement: Y
Docket:
NRC Notified By: JOE MENICHINO
HQ OPS Officer: CHARLES TEAL
Notification Date: 05/12/2010
Notification Time: 18:39 [ET]
Event Date: 05/12/2010
Event Time: 00:00 [EDT]
Last Update Date: 05/12/2010
Notification Time: 18:39 [ET]
Event Date: 05/12/2010
Event Time: 00:00 [EDT]
Last Update Date: 05/12/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
21.21 - UNSPECIFIED PARAGRAPH
10 CFR Section:
21.21 - UNSPECIFIED PARAGRAPH
Person (Organization):
KATHLEEN O'DONOHUE (R2DO)
GREG PICK (R4DO)
PART 21 GROUP (EMAI)
KATHLEEN O'DONOHUE (R2DO)
GREG PICK (R4DO)
PART 21 GROUP (EMAI)
LUGS ON DIGITAL FILTER IMPROPERLY SOLDERED
A faulty Digital Control System Output Filter was discovered at Farley Nuclear Power station while installing it on the emergency feedwater Terry Steam Turbine. The problem only affects two plants: Farley Nuclear Power Station and San Onofre Nuclear Power Station. Farley replaced the filter before use. San Onofre had installed and used the filter, but they are replacing it.
"Description of Defect:
"Eyelets inserted into the printed circuit (p.c.) board to make connections from one side of the board to the other side were not soldered on the top side where the terminal block is installed. This may result in the connection being broken during tightening of the wire lug on the terminal block or if other stresses are applied to the p.c. board or terminal block. This defect is limited to output filter serial numbers 10009, 10010, 10011, and 10012.
"Engineering Evaluation and Recommendations:
"Failure can occur during assembly. The results of a seismic event are unknown. All 4 filters must be recovered and repaired. Locations of the 4 filters include Dresser-Rand, Farley Nuclear Station, and San Onofre Nuclear Generating Station."
A faulty Digital Control System Output Filter was discovered at Farley Nuclear Power station while installing it on the emergency feedwater Terry Steam Turbine. The problem only affects two plants: Farley Nuclear Power Station and San Onofre Nuclear Power Station. Farley replaced the filter before use. San Onofre had installed and used the filter, but they are replacing it.
"Description of Defect:
"Eyelets inserted into the printed circuit (p.c.) board to make connections from one side of the board to the other side were not soldered on the top side where the terminal block is installed. This may result in the connection being broken during tightening of the wire lug on the terminal block or if other stresses are applied to the p.c. board or terminal block. This defect is limited to output filter serial numbers 10009, 10010, 10011, and 10012.
"Engineering Evaluation and Recommendations:
"Failure can occur during assembly. The results of a seismic event are unknown. All 4 filters must be recovered and repaired. Locations of the 4 filters include Dresser-Rand, Farley Nuclear Station, and San Onofre Nuclear Generating Station."