Event Notification Report for May 02, 2010
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/01/2010 - 05/02/2010
EVENT NUMBERS
45893
Power Reactor
Event Number: 45893
Facility: COOK
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: RICHARD KRESS
HQ OPS Officer: DONALD NORWOOD
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: RICHARD KRESS
HQ OPS Officer: DONALD NORWOOD
Notification Date: 05/02/2010
Notification Time: 15:27 [ET]
Event Date: 05/02/2010
Event Time: 08:58 [EDT]
Last Update Date: 05/02/2010
Notification Time: 15:27 [ET]
Event Date: 05/02/2010
Event Time: 08:58 [EDT]
Last Update Date: 05/02/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
DAVID HILLS (R3DO)
DAVID HILLS (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 49 | Power Operation |
MANUAL ACTUATION OF AUXILIARY FEEDWATER SYSTEM IN RESPONSE TO LOSS OF ONE MAIN FEEDWATER PUMP
"At 0858 [EDT] on Sunday, May 2, 2010, operators manually started all Auxiliary Feedwater (AFW) pumps in response to a loss of the East Main Feedwater Pump (EMFP).
"Operators were responding to high bearing temperatures on the EMFP, and had entered the Rapid Power Reduction Procedure, when they received EMFP Hi and Hi-Hi vibration alarms and reports of oil leaking from the EMFP. Operators entered the procedure for Loss of One Main Feed Pump, which directs starting the AFW pumps, and removed the EMFP from service. The plant was stabilized at approximately 49% power.
"The licensee has notified the NRC Senior Resident Inspector.
"This notification is being made in accordance with 10CFR50.72(b)(3)(iv)(A) due to the valid actuation of the AFW system in response to equipment failure."
"At 0858 [EDT] on Sunday, May 2, 2010, operators manually started all Auxiliary Feedwater (AFW) pumps in response to a loss of the East Main Feedwater Pump (EMFP).
"Operators were responding to high bearing temperatures on the EMFP, and had entered the Rapid Power Reduction Procedure, when they received EMFP Hi and Hi-Hi vibration alarms and reports of oil leaking from the EMFP. Operators entered the procedure for Loss of One Main Feed Pump, which directs starting the AFW pumps, and removed the EMFP from service. The plant was stabilized at approximately 49% power.
"The licensee has notified the NRC Senior Resident Inspector.
"This notification is being made in accordance with 10CFR50.72(b)(3)(iv)(A) due to the valid actuation of the AFW system in response to equipment failure."