| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
10/20/2003 - 10/21/2003 ** EVENT NUMBERS ** |
 | Power Reactor | Event Number: 40210 | Facility: FERMI
Region: 3 State: MI
Unit: [2] [ ] [ ]
RX Type: [2] GE-4
NRC Notified By: MIKE HIMEBAUCH
HQ OPS Officer: GERRY WAIG | Notification Date: 10/01/2003
Notification Time: 00:43 [ET]
Event Date: 09/30/2003
Event Time: 20:50 [EDT]
Last Update Date: 10/20/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
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 | | 2 | N | Y | 100 | Power Operation | 84 | Power Operation | Event Text PLANT SHUTDOWN REQUIRED BY TECHNICAL SPECIFICATIONS DUE TO INOPERABLE CONTROL CENTER HVAC
"With the plant in Mode 1 and 100% reactor power at 2043 [EDT] on September 30, 2003, while shifting divisions of Control Center HVAC (CCHVAC), the Division 1 chiller failed to start and Division 1 CCHVAC was declared INOPERABLE. At 2050, a restart of Division 2 CCHVAC was attempted and the Division 2 chiller failed to start. Division 2 CCHVAC was declared INOPERABLE, and the plant entered LCO 3.0.3 as required by LCO 3.7.4 Condition D. Plant shutdown was initiated at 2146. Division 1 CCHVAC was declared OPERABLE at 2315, and LCO 3.0.3 was exited. Plant shutdown was terminated at 2315 with the reactor at 84% power. Division 2 CCHVAC remains INOPERABLE and under investigation, with plant operating under LCO 3.7.4 Condition A. Plans are to return to 100% reactor power. All ECCS systems remained OPERABLE during this event.
"The NRC Resident Inspector has been notified. This report is being made pursuant to 10 CFR 50.72(b)(2)(i) and 10 CFR 50.72(b)(3)(v)(D)."
* * * UPDATE 1428 EDT ON 10/20/03 FROM JEFF YEAGER TO S. SANDIN * * *
The licensee is retracting the notification required per 10 CFR 50.72(b)(3)(v) based on the following:
"At 2050 hours on September 30,2003 with the plant operating at 100 percent reactor power air conditioning chillers for both divisions of the Control Center Air Conditioning System failed to start. Technical Specification (TS) LCO 3.0.3 was entered as directed by LCO 3.7.4, Control Center Air Conditioning System, Condition D.1 and a plant shutdown initiated at 2146 hours. Notification was made in accordance with 10 CFR 50.72(b)(2)(i), a Plant Shutdown Required by Technical Specifications. The chiller for Division 1 Control Center Air Conditioning System was started after approximately one hour and subsequently declared operable at 2315 hours. TS 3.0.3 was exited and power reduction was terminated at 84 percent reactor power.
"Notification was also made in accordance with 10 CFR 50.72(b)(3)(v), Event or Condition that Could Have Prevented Fulfillment of a Safety Function. Investigation revealed an oil pressure permissive was not met for start of the chiller due to a small amount of air leaking into a pressure switch while shutdown. This delayed meeting the oil pressure permissive for starting the chiller. Subsequent start attempts removed the air, allowing the pressure permissive to be met and the chiller to be restarted. This restart of the chiller was accomplished from the main control room in accordance with plant procedures. Therefore, Division 1 Control Center Air Conditioning was capable of performing its intended function. This condition is therefore not reportable under 10 CFR 50.72(b)(3)(v). The original notification, Event Number 40210, is retracted."
The licensee informed the NRC Resident Inspector. Notified R3DO (Jim Creed). |
| Power Reactor | Event Number: 40261 | Facility: SUMMER
Region: 2 State: SC
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP
NRC Notified By: JIM TURKETT
HQ OPS Officer: STEVE SANDIN | Notification Date: 10/20/2003
Notification Time: 13:21 [ET]
Event Date: 10/20/2003
Event Time: 07:00 [EDT]
Last Update Date: 10/20/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(A) - DEGRADED CONDITION
| Person (Organization):
CHARLES R. OGLE (R2)
TERRY REIS (NRR)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Refueling | 0 | Refueling | Event Text RCS THROUGH-WALL LEAKAGE FOUND ON SEAL INJECTION PIPING
"On October 19, 2003, during performance of surveillance test procedure, STP 250.001B, Boric Acid Inspection Program, boron was observed around the seal injection piping and on the pump case housing of reactor coolant pump (RCP) 'C.' Inspection personnel contacted the Control Room and Outage Management at 1350 hours. Evaluation of the condition was initiated and a dye penetrant examination (PT) was scheduled for the morning of October 20. Evaluation of the PT results determined at 0700 hours on October 20 that the seal injection piping at the RCP pump case housing had through-wall leakage. This condition is being reported in accordance with 10CFR50.72(b)(3)(ii)(A)(2)."
The licensee performed a similar inspection in April 2002 and found no indication of leakage at that time. Inspections of RCPs 'A' and 'B' have been completed during this outage with no indication of leakage observed. The licensee has corrective actions under review which will include additional UT inspections.
The licensee informed the NRC Resident Inspector. |
| Power Reactor | Event Number: 40262 | Facility: COOPER
Region: 4 State: NE
Unit: [1] [ ] [ ]
RX Type: [1] GE-4
NRC Notified By: WILLIAM GILBERT
HQ OPS Officer: STEVE SANDIN | Notification Date: 10/20/2003
Notification Time: 18:39 [ET]
Event Date: 10/20/2003
Event Time: 15:26 [CDT]
Last Update Date: 10/20/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
| Person (Organization):
WILLIAM JONES (R4)
|
| 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 OFFSITE NOTIFICATION TO NEBRASKA DEPARTMENT OF ENVIRONMENTAL QUALITY
"At 1526 on 10/20/2003 the Nebraska Department of Environmental Quality was contacted due to exceeding oil and grease release rates to the Missouri River from the Floor Drain System at the Headwall discharge point. A routine sample taken on 10/16/2003 of the Floor Drain System Headwall discharge point indicated 19.2mg/liter, this is above the maximum daily limit of 10 mg/liter. A follow up sample taken on 10/20/2003 indicated 18.3 mg/liter. Investigation of the source is ongoing, and the discharge lines have been flushed. The licensee believes this is a deminimus release of little or no significance.
"NRC SRI has been informed." |
| Power Reactor | Event Number: 40263 | Facility: CALLAWAY
Region: 4 State: MO
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP
NRC Notified By: Charles Sarrow
HQ OPS Officer: MIKE RIPLEY | Notification Date: 10/21/2003
Notification Time: 05:20 [ET]
Event Date: 10/21/2003
Event Time: 01:00 [CDT]
Last Update Date: 10/21/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
| Person (Organization):
WILLIAM JONES (R4)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 70 | Power Operation | Event Text PLANT SHUTDOWN REQUIRED BY TECHNICAL SPECIFICATIONS
"Due to failure of an instrument power inverter (NN11) which supplies vital 120Vac bus NN01, Callaway Plant entered L.C.O. 3.8.7, Electrical Power Systems, Inverters - Operating, Condition A at 0721 on October 20, 2003. The inverter supplying the bus is required to meet the LCO. Since the initiation of the inverter failure, the vital instrument bus has been energized from alternate power supply transformers in accordance with plant design and procedures. It is not an acceptable alternative to meet the LCO OPERABILITY requirement.
"Details of the impact on the plant due to this failure are detailed in Corrective Actions Program Report (C.A.R.) 200307636. In summary, the bus voltage was lost momentarily, then restored by operation of the inverter static transfer switch. The failure and subsequent restoration of power to AC Vital Bus caused some control systems responses that were corrected by the control room staff. After the event was stabilized, power remained at 100%.
"The LCO Action is to restore the inverter to OPERABLE status within twenty four (24) hours, otherwise be in MODE 3 in 6 hours AND be in Mode 5 in thirty six (36) hours. The twenty four hour period ends at 0721 October 21, 2003. In advance of the action time, a controlled plant shutdown to Mode Three (3) was commenced at 0100 on October 21, 2003 at a rate of ten (10) percent per hour. At the time of this report, maintenance efforts have determined that the problem is internal to the inverter Static Transfer Switch, therefore the reduction of power will continue."
No safety system actuations resulted from the control power transfer. The licensee has notified the NRC Resident Inspector. | |