| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
08/09/2005 - 08/10/2005 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 41652 | Facility: QUAD CITIES
Region: 3 State: IL
Unit: [1] [2] [ ]
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: JIM STORTZ
HQ OPS Officer: ARLON COSTA | Notification Date: 04/29/2005
Notification Time: 12:00 [ET]
Event Date: 04/29/2005
Event Time: 07:32 [CDT]
Last Update Date: 08/09/2005 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
ERIC DUNCAN (R3)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 85 | Power Operation | 85 | Power Operation | | 2 | N | Y | 85 | Power Operation | 85 | Power Operation | Event Text MINIMUM SWITCHYARD VOLTAGE REQUIREMENTS NOT MET
"At 0732 [CDT] on April 29, 2005 Quad Cities Station was notified that the calculated post-LOCA switchyard voltage was below the minimum acceptable value required to ensure offsite power would remain available following a design basis accident. As a result, both offsite power sources were declared inoperable and the appropriate Technical Specification Actions were taken for both Units. The ability of the Emergency Diesel Generators to fulfill their design function was not affected by this condition. This event is being reported in accordance with 10CFR50.72(b)(3)(v)(D) as a condition that could have prevented the fulfillment of a safety function given the predicted post-LOCA switchyard voltage. The condition was exited at 0836 [CDT] on April 29, 2005.
"The required minimum post-accident switchyard voltage is 352.9 KV (Unit 1) and 351.0 KV (Unit 2) while the projected post accident voltage, which prompted this notification, was 347.9 KV. During this timeframe, actual switchyard voltage was approximately 358 KV."
The licensee notified the NRC Resident Inspector.
* * * RETRACTION FROM J. COX TO W. GOTT 1906 ET 08/09/05 * * *
"The purpose of this report is to retract ENS report #41652 (April 29, 2005), ENS report 41766 (June 11, 2005), and ENS report #41801 (June 27, 2005). The reports were made following notification that the switchyard predicted voltage was below the required value necessary to ensure that offsite power would remain available following a design basis accident. For each event, both sources of offsite power were declared inoperable, the appropriate Technical Specification required actions were taken for the units, and an ENS notification was made for a condition that could have prevented the fulfillment of a safety function.
"Each Quad Cities unit has two sources of off-site power. For a specific unit, one source is from the switchyard through the unit's Reserve Auxiliary Transformer (RAT) and the second source is from the switchyard through the opposite unit's RAT. Following further analysis of the loading on the RATs during an accident, it was determined that only one source of offsite power to each unit should have been considered inoperable. The analysis determined that because the RAT for the non-accident unit (i.e., the offsite source supplied through the opposite unit) would be carrying a much smaller load, it would not be subject to a degraded voltage condition and resultant isolation from the grid. Therefore, an accident on one unit would not affect the operability of the source of offsite power supplied through the opposite unit's RAT. As a result, only the source of offsite power supplied through the unit's RAT was inoperable. With one source of offsite power available at all times, there was no condition present that could have prevented fulfillment of a safety function, and therefore, these events are not reportable."
The licensee notified the NRC Resident Inspector. Notified R3 DO (R. Lanksbury) |
| !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 41766 | Facility: QUAD CITIES
Region: 3 State: IL
Unit: [1] [2] [ ]
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: RON RUSTICK
HQ OPS Officer: STEVE SANDIN | Notification Date: 06/11/2005
Notification Time: 15:30 [ET]
Event Date: 06/11/2005
Event Time: 13:10 [CDT]
Last Update Date: 08/09/2005 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
JULIO LARA (R3)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 85 | Power Operation | 85 | Power Operation | | 2 | N | Y | 95 | Power Operation | 95 | Power Operation | Event Text MINIMUM SWITCHYARD VOLTAGE REQUIREMENTS NOT MET
"At 1310 on June 11, 2005 Quad Cities Station was notified that the calculated post-LOCA switchyard voltage is below the minimum acceptable value required to ensure offsite power will remain available following a design basis accident. The appropriate Technical Specification Actions have been taken for both Units. The ability of the Emergency Diesel Generators to fulfill their design function is not affected by this condition. This event is being reported in accordance with 10CFR50.72(b)(3)(v)(D) as a condition that could have prevented the fulfillment of a safety function given the predicted post-LOCA switchyard voltage.
"Actual Switchyard voltage at the time of this notification is 356 Kv. The required minimum post-accident switchyard voltage for current conditions is 352.9 Kv for U-1 and 351 Kv for U-2, while the projected post-accident voltage which prompted this notification is 347.4 Kv.
"This notification is similar to the condition reported on March 24, 2005 (EN #41524), April 4, 2005 (EN #41562) and April 11, 2005 (EN #41587)."
Both Units entered T.S. 3.8.1 which requires verification of EDG operability (completed) and continued monitoring of line voltages with restoration of at least one offsite-line to the required minimum within 24-hours.
The licensee informed the NRC Resident Inspector.
* * * UPDATE 1610 EDT ON 6/11/05 FROM RON RUSTICK TO S. SANDIN * * *
At 1505 CDT both Units exited T.S. 3.8.1 when projected post-accident line voltage reached 353.8 kV. Notified R3DO (Lara).
* * * RETRACTION FROM J. COX TO W. GOTT 1906 ET 08/09/05 * * *
"The purpose of this report is to retract ENS report #41652 (April 29, 2005), ENS report 41766 (June 11, 2005), and ENS report #41801 (June 27, 2005). The reports were made following notification that the switchyard predicted voltage was below the required value necessary to ensure that offsite power would remain available following a design basis accident. For each event, both sources of offsite power were declared inoperable, the appropriate Technical Specification required actions were taken for the units, and an ENS notification was made for a condition that could have prevented the fulfillment of a safety function.
"Each Quad Cities unit has two sources of off-site power. For a specific unit, one source is from the switchyard through the unit's Reserve Auxiliary Transformer (RAT) and the second source is from the switchyard through the opposite unit's RAT. Following further analysis of the loading on the RATs during an accident, it was determined that only one source of offsite power to each unit should have been considered inoperable. The analysis determined that because the RAT for the non-accident unit (i.e., the offsite source supplied through the opposite unit) would be carrying a much smaller load, it would not be subject to a degraded voltage condition and resultant isolation from the grid. Therefore, an accident on one unit would not affect the operability of the source of offsite power supplied through the opposite unit's RAT. As a result, only the source of offsite power supplied through the unit's RAT was inoperable. With one source of offsite power available at all times, there was no condition present that could have prevented fulfillment of a safety function, and therefore, these events are not reportable."
The licensee notified the NRC Resident Inspector. Notified R3 DO (R. Lanksbury) |
| !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 41801 | Facility: QUAD CITIES
Region: 3 State: IL
Unit: [1] [2] [ ]
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: D. CLARK
HQ OPS Officer: BILL GOTT | Notification Date: 06/27/2005
Notification Time: 16:41 [ET]
Event Date: 06/27/2005
Event Time: 11:50 [CDT]
Last Update Date: 08/09/2005 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
JAMNES CAMERON (R3)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 85 | Power Operation | 85 | Power Operation | | 2 | N | Y | 97 | Power Operation | 97 | Power Operation | Event Text MINIMUM SWITCHYARD VOLTAGE REQUIREMENTS NOT MET
"At 1150 on June 27, 2005 Quad Cities Station was notified that the calculated post-LOCA switchyard voltage is below the minimum acceptable value required to ensure offsite power will remain available following a design basis accident. The appropriate Technical Specification Actions have been taken for both Units. The ability of the Emergency Diesel Generators to fulfill their design function is not affected by this condition. This event is being reported in accordance with 10CFR50.72(b)(3)(v)(D) as a condition that could have prevented the fulfillment of a safety function given the predicted post-LOCA switchyard voltage.
"Actual Switchyard voltage at the time of this notification is 356 Kv. The required minimum post-accident switchyard voltage for current conditions is 352.9 Kv for Unit-1 and 351 Kv for Unit-2, while the projected post-accident voltage which prompted this notification is 349.8 Kv. At 1320 hrs on June 27, the projected post-accident voltage was 351.3kV. This prediction satisfies the minimum Unit 2 voltage requirement, but is still below the minimum voltage for Unit 1.
"This notification is similar to the condition reported on April 29, 2005 (EN #41652) and June 11, 2005 (EN #41766)."
The licensee notified the NRC Resident Inspector.
* * * RETRACTION FROM J. COX TO W. GOTT 1906 ET 08/09/05 * * *
"The purpose of this report is to retract ENS report #41652 (April 29, 2005), ENS report 41766 (June 11, 2005), and ENS report #41801 (June 27, 2005). The reports were made following notification that the switchyard predicted voltage was below the required value necessary to ensure that offsite power would remain available following a design basis accident. For each event, both sources of offsite power were declared inoperable, the appropriate Technical Specification required actions were taken for the units, and an ENS notification was made for a condition that could have prevented the fulfillment of a safety function.
"Each Quad Cities unit has two sources of off-site power. For a specific unit, one source is from the switchyard through the unit's Reserve Auxiliary Transformer (RAT) and the second source is from the switchyard through the opposite unit's RAT. Following further analysis of the loading on the RATs during an accident, it was determined that only one source of offsite power to each unit should have been considered inoperable. The analysis determined that because the RAT for the non-accident unit (i.e., the offsite source supplied through the opposite unit) would be carrying a much smaller load, it would not be subject to a degraded voltage condition and resultant isolation from the grid. Therefore, an accident on one unit would not affect the operability of the source of offsite power supplied through the opposite unit's RAT. As a result, only the source of offsite power supplied through the unit's RAT was inoperable. With one source of offsite power available at all times, there was no condition present that could have prevented fulfillment of a safety function, and therefore, these events are not reportable."
The licensee notified the NRC Resident Inspector. Notified R3 DO (R. Lanksbury) |
| General Information or Other | Event Number: 41893 | Rep Org: KANSAS DEPT OF HEALTH & ENVIRONMENT
Licensee: KANSAS DEPT OF TRANSPORTATION
Region: 4
City: MANHATTAN State: KS
County:
License #: 22-B315-01
Agreement: Y
Docket:
NRC Notified By: DAVID WHITFILL
HQ OPS Officer: BILL GOTT | Notification Date: 08/05/2005
Notification Time: 14:31 [ET]
Event Date: 08/05/2005
Event Time: [CDT]
Last Update Date: 08/07/2005 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
DALE POWERS (R4)
SCOTT MOORE (NMSS)
ROBERTA WARREN email (TAS)
| Event Text MISSING TROXLER GAUGE
Kansas Department of Transportation workers transited from one worksite to another with a Troxler Moisture Density Gauge in their vehicle. When they arrived at their destination, they discovered that their Model 3440 Troxler Moisture Density Gauge (44 milliCuries Am/Be; 8 milliCuries Cs-137) was missing. Someone noticed a gauge on Fort Riley Blvd in Manhattan, KS, and notified the police and fire department. The DOT personnel had used Fort Riley Blvd to get to the second job site. When emergency personnel arrived at the scene, the gauge was gone. The KS DOT notified local law enforcement. The gauge was in its transportation container and the source was locked.
KS Report Number: KS-050016
* * * UPDATE FROM D. WHITFILL TO W GOTT AT 1257 ON 08/08/05 * * *
The Troxler Moisture Density Gauge was found late (2200 - 2300) on 08/05/05 near the location it was reported lost. Kansas Department of Transportation has custody of the gauge and it is not damaged.
Notified R4DO (D. Powers) and NMSS (S. Moore) and emailed to TAS (R. Warren). |
| General Information or Other | Event Number: 41894 | Rep Org: NEW MEXICO RAD CONTROL PROGRAM
Licensee: AMEC EARTH AND ENVIRONMENTAL
Region: 4
City: ALBUQUERQUE State: NM
County:
License #: DM201-34
Agreement: Y
Docket:
NRC Notified By: STANLEY FITCH
HQ OPS Officer: JEFF ROTTON | Notification Date: 08/05/2005
Notification Time: 15:10 [ET]
Event Date: 08/05/2005
Event Time: 01:00 [MDT]
Last Update Date: 08/05/2005 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
DALE POWERS (R4)
SCOTT MOORE (NMSS)
ROBERTA WARREN email (TAS)
MEXICO CNSNS email ()
| Event Text AGREEMENT STATE - STOLEN TROXLER MOISTURE DENSITY GAUGE
At 0945 MDT on 08/05/05, the licensee reported that a Troxler Moisture Density Gauge had been stolen between 2300 MDT on 08/04/05 and 0100 MDT on 08/05/05. The gauge was locked in its transfer case and chained in the back of the truck. The truck was parked in the 1st row of the casino parking lot at the New Mexico State Fairgrounds. Casino police contacted the New Mexico State Police. The Troxler was a model 3430, Serial number 29090 and contained 50 millicuries Am-241/BE and 10 millicuries Cs-137. | |