Event Notification Report for December 14, 2002
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/13/2002 - 12/14/2002
EVENT NUMBERS
39445
Power Reactor
Event Number: 39445
Facility: CALLAWAY
Region: 4 State: MO
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: DAVID LANTZ
HQ OPS Officer: STEVE SANDIN
Region: 4 State: MO
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: DAVID LANTZ
HQ OPS Officer: STEVE SANDIN
Notification Date: 12/14/2002
Notification Time: 09:11 [ET]
Event Date: 12/14/2002
Event Time: 04:20 [CST]
Last Update Date: 12/14/2002
Notification Time: 09:11 [ET]
Event Date: 12/14/2002
Event Time: 04:20 [CST]
Last Update Date: 12/14/2002
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):
KRISS KENNEDY (R4)
KRISS KENNEDY (R4)
| 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 |
AUTOMATIC REACTOR TRIP ON OTDT DURING DOWNPOWER
"At 0420 on 12/14/02, a valid actuation signal was generated that caused an Overtemperature Delta T (OTDT) Reactor Trip. The cause of the OTDT trip was a downpower at 1% per minute due to an oil leak on the 'C' Condensate Pump. A valid actuation signal was generated for the Auxiliary Feedwater Actuation System (AFAS), the Feedwater Isolation System (FWIS) and the Steam Generator Blowdown System Isolation System (SGBSIS) due to Steam Generator Low Levels. After the Turbine Driven Auxiliary Feedwater Actuation Signal (AFAS) was reset, a second AFAS was received and the Turbine Driven Auxiliary Pump failed to start. All other systems functioned as expected.
"An Event Review Team (ERT) has been assembled to determine the cause of the event. Additional corrective action to be taken will be based upon recommendations provided by the ERT.
"The Senior NRC Resident Inspector has been notified of the event."
Both motor driven Auxiliary Feedwater Pumps are in service currently maintaining SG levels. The Main Condenser is available for removal of decay heat via the Main Steam Dump Bypass. All rods fully inserted.
"At 0420 on 12/14/02, a valid actuation signal was generated that caused an Overtemperature Delta T (OTDT) Reactor Trip. The cause of the OTDT trip was a downpower at 1% per minute due to an oil leak on the 'C' Condensate Pump. A valid actuation signal was generated for the Auxiliary Feedwater Actuation System (AFAS), the Feedwater Isolation System (FWIS) and the Steam Generator Blowdown System Isolation System (SGBSIS) due to Steam Generator Low Levels. After the Turbine Driven Auxiliary Feedwater Actuation Signal (AFAS) was reset, a second AFAS was received and the Turbine Driven Auxiliary Pump failed to start. All other systems functioned as expected.
"An Event Review Team (ERT) has been assembled to determine the cause of the event. Additional corrective action to be taken will be based upon recommendations provided by the ERT.
"The Senior NRC Resident Inspector has been notified of the event."
Both motor driven Auxiliary Feedwater Pumps are in service currently maintaining SG levels. The Main Condenser is available for removal of decay heat via the Main Steam Dump Bypass. All rods fully inserted.