Event Notification Report for December 26, 2002
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/25/2002 - 12/26/2002
Power Reactor
Event Number: 39481
Facility: PALO VERDE
Region: 4 State: AZ
Unit: [] [2] []
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: DAN MARKS
HQ OPS Officer: RICH LAURA
Region: 4 State: AZ
Unit: [] [2] []
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: DAN MARKS
HQ OPS Officer: RICH LAURA
Notification Date: 12/31/2002
Notification Time: 11:15 [ET]
Event Date: 12/26/2002
Event Time: 05:18 [MST]
Last Update Date: 01/03/2003
Notification Time: 11:15 [ET]
Event Date: 12/26/2002
Event Time: 05:18 [MST]
Last Update Date: 01/03/2003
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
WILLIAM JOHNSON (R4)
WILLIAM JOHNSON (R4)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 99 | Power Operation | 99 | Power Operation |
PALO VERDE 2 OFFSITE NOTIFICATION ON COOLING TOWER WATER SPILL
"The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event or alters the information being provided at this time, a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73.
"On Tuesday, December 31, 2002, the Palo Verde Nuclear Generating Station Unit 2 will provide a voluntary written report to the Arizona Department of Environmental Quality (ADEQ) of an event related to the protection of the environment. Specifically, the report will detail an unintentional release of an estimated 72,000 gallons of cooling tower water to the unlined ditch that carries storm water from the gunite lined storm water collection system to Sedimentation Basin #1. The release began at approximately 05:18 Mountain Standard Time (MST) on December 26, 2002 and was stopped at approximately 05:50 MST on December 28, 2002 following discovery. No news release is anticipated."
The NRC Resident Inspector was notified.
***UPDATE 01/03/03 1551 EST DAN MARKS TO JASON FLEMMING***
"It has been brought to Palo Verde's attention that this ENS event report 39481 has been posted on the NRC website with an error. The release stopped at approximately 05:50 MST on December 26, 2002. The webpage incorrectly states December 28, 2002."
The NRC resident inspector has been notified.
"The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event or alters the information being provided at this time, a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73.
"On Tuesday, December 31, 2002, the Palo Verde Nuclear Generating Station Unit 2 will provide a voluntary written report to the Arizona Department of Environmental Quality (ADEQ) of an event related to the protection of the environment. Specifically, the report will detail an unintentional release of an estimated 72,000 gallons of cooling tower water to the unlined ditch that carries storm water from the gunite lined storm water collection system to Sedimentation Basin #1. The release began at approximately 05:18 Mountain Standard Time (MST) on December 26, 2002 and was stopped at approximately 05:50 MST on December 28, 2002 following discovery. No news release is anticipated."
The NRC Resident Inspector was notified.
***UPDATE 01/03/03 1551 EST DAN MARKS TO JASON FLEMMING***
"It has been brought to Palo Verde's attention that this ENS event report 39481 has been posted on the NRC website with an error. The release stopped at approximately 05:50 MST on December 26, 2002. The webpage incorrectly states December 28, 2002."
The NRC resident inspector has been notified.
Power Reactor
Event Number: 39473
Facility: SEQUOYAH
Region: 2 State: TN
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JEFF EPPERSON
HQ OPS Officer: ARLON COSTA
Region: 2 State: TN
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JEFF EPPERSON
HQ OPS Officer: ARLON COSTA
Notification Date: 12/26/2002
Notification Time: 17:47 [ET]
Event Date: 12/26/2002
Event Time: 16:20 [EST]
Last Update Date: 12/26/2002
Notification Time: 17:47 [ET]
Event Date: 12/26/2002
Event Time: 16:20 [EST]
Last Update Date: 12/26/2002
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):
STEPHEN CAHILL (R2)
GENE IMBRO (NRR)
STEPHEN CAHILL (R2)
GENE IMBRO (NRR)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | A/R | Y | 100 | Power Operation | 0 | Hot Standby |
RPS ACTUATION FOLLOWED BY AUTOMATIC REACTOR TRIP
"At 16:20 EST, Unit 2 #3 Reactor Coolant Pump Tripped due to actuation of its 6.9 KV Circuit Breaker's Toroidal Ground Relay (Device 50G). The trip of the RCP resulted in an automatic reactor trip from 100% rated thermal power.
"All support equipment operated as designed. No primary or secondary safety valves opened. The Unit is stable. Mode 3 conditions are being maintained."
The reactor was shutdown with all control rods fully inserted. The remaining 3 RCPs are in operation and transferring decay heat to the steam generators.
The NRC Resident Inspector was notified.
* * * UPDATE FROM MITCH TAGGART TO ARLON COSTA ON 12/26/02 AT 21:43 * * *
Actuation of RPS System (Reactor Trip) and Auxiliary Feedwater as expected from reactor trip in accordance with 10CFR50.72(b)(3)(iv)(A)(1) RPS and (6) Auxiliary Feedwater.
The Licensee will notify the NRC Resident Inspector.
The Headquarters Operations Officer notified NRC R2DO (Stephen Cahill)
"At 16:20 EST, Unit 2 #3 Reactor Coolant Pump Tripped due to actuation of its 6.9 KV Circuit Breaker's Toroidal Ground Relay (Device 50G). The trip of the RCP resulted in an automatic reactor trip from 100% rated thermal power.
"All support equipment operated as designed. No primary or secondary safety valves opened. The Unit is stable. Mode 3 conditions are being maintained."
The reactor was shutdown with all control rods fully inserted. The remaining 3 RCPs are in operation and transferring decay heat to the steam generators.
The NRC Resident Inspector was notified.
* * * UPDATE FROM MITCH TAGGART TO ARLON COSTA ON 12/26/02 AT 21:43 * * *
Actuation of RPS System (Reactor Trip) and Auxiliary Feedwater as expected from reactor trip in accordance with 10CFR50.72(b)(3)(iv)(A)(1) RPS and (6) Auxiliary Feedwater.
The Licensee will notify the NRC Resident Inspector.
The Headquarters Operations Officer notified NRC R2DO (Stephen Cahill)
General Information or Other
Event Number: 39474
Rep Org: COLORADO DEPT OF HEALTH
Licensee: SCHLUMBERGER TECHNOLOGIES CORP.
Region: 4
City: RIFLE State: CO
County:
License #: 039-01
Agreement: Y
Docket:
NRC Notified By: TIM G. BONZER
HQ OPS Officer: ARLON COSTA
Licensee: SCHLUMBERGER TECHNOLOGIES CORP.
Region: 4
City: RIFLE State: CO
County:
License #: 039-01
Agreement: Y
Docket:
NRC Notified By: TIM G. BONZER
HQ OPS Officer: ARLON COSTA
Notification Date: 12/26/2002
Notification Time: 11:35 [ET]
Event Date: 12/26/2002
Event Time: 08:30 [MST]
Last Update Date: 12/26/2002
Notification Time: 11:35 [ET]
Event Date: 12/26/2002
Event Time: 08:30 [MST]
Last Update Date: 12/26/2002
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
LINDA HOWELL (R4)
SUSAN FRANT (email) (NMSS)
FRED BROWN (email) (NMSS)
LINDA HOWELL (R4)
SUSAN FRANT (email) (NMSS)
FRED BROWN (email) (NMSS)
AGREEMENT STATE NOTIFICATION OF IRRETRIEVABLE WELL-LOGGING SOURCE
Timothy Bonzer of the Colorado Radiation Services notified the NRC Operations Center via fax on 12/26/02 at 1135 EST on an incident involving an abandoned well-logging source assembly at a gas well near Rifle, Colorado by Schlumberger Technologies Corp. The sources (Cs and AmBe) were lost at approximately the 8,000 ft level and efforts to retrieve the sources were unsuccessful. They had taken the necessary measures to deflect any future attempt to drill in the same location and will place a stainless steel warning placard at the surface. They intended to abandon the sources and are still planning to use the well for the production of natural gas.
The Colorado Emergency Management organization is cognizant of this incident.
Timothy Bonzer of the Colorado Radiation Services notified the NRC Operations Center via fax on 12/26/02 at 1135 EST on an incident involving an abandoned well-logging source assembly at a gas well near Rifle, Colorado by Schlumberger Technologies Corp. The sources (Cs and AmBe) were lost at approximately the 8,000 ft level and efforts to retrieve the sources were unsuccessful. They had taken the necessary measures to deflect any future attempt to drill in the same location and will place a stainless steel warning placard at the surface. They intended to abandon the sources and are still planning to use the well for the production of natural gas.
The Colorado Emergency Management organization is cognizant of this incident.