Event Notification Report for December 13, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/12/2015 - 12/13/2015
EVENT NUMBERS
51601
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 51601
Facility: HARRIS
Region: 2 State: NC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: KATE COLIAS
HQ OPS Officer: DANIEL MILLS
Region: 2 State: NC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: KATE COLIAS
HQ OPS Officer: DANIEL MILLS
Notification Date: 12/13/2015
Notification Time: 10:41 [ET]
Event Date: 12/13/2015
Event Time: 03:07 [EST]
Last Update Date: 12/14/2015
Notification Time: 10:41 [ET]
Event Date: 12/13/2015
Event Time: 03:07 [EST]
Last Update Date: 12/14/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(B) - POT RHR INOP 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(B) - POT RHR INOP 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
EUGENE GUTHRIE (R2DO)
EUGENE GUTHRIE (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
ESSENTIAL SERVICES CHILLED WATER SYSTEM INOPERABLE
"This is a non-emergency eight hour notification for a condition that could have prevented fulfillment of a safety function in a system needed to remove decay heat and to mitigate the consequences of an accident.
"At approximately 0307 EST on December 13, 2015, the 'A' and 'B' trains of the essential services chilled water (ESCW) system were inoperable for a time period of 23 minutes. The 'B' train of the ESCW system was being tested at the time that the 'A' train of the ESCW system became inoperable. The 'B' train of the ESCW system was returned to operable status at approximately 0330 EST and remains operable.
"The ESCW system provides cooling support functions to remove decay heat and mitigate the consequences of an accident. There were no safety system actuations during this time period and the plant is stable.
"This condition does not affect the health and safety of the public or station employees. The NRC Resident Inspector has been notified."
The 'A' ESCW pump tripped on low lube oil pressure.
* * * RETRACTION FROM JOHN CAVES TO JOHN SHOEMAKER AT 1756 EST ON 12/14/15 * * *
"Upon further review of the condition, it was determined that the 'A' train of the ESCW system was capable of performing its safety function throughout the time period previously reported, and the 'A' train of the ESCW system was operable. Therefore, there was no loss of safety function. Event notification 51601 is retracted. The NRC Resident Inspector has been informed of this notification retraction."
Notified the R2DO (Guthrie).
"This is a non-emergency eight hour notification for a condition that could have prevented fulfillment of a safety function in a system needed to remove decay heat and to mitigate the consequences of an accident.
"At approximately 0307 EST on December 13, 2015, the 'A' and 'B' trains of the essential services chilled water (ESCW) system were inoperable for a time period of 23 minutes. The 'B' train of the ESCW system was being tested at the time that the 'A' train of the ESCW system became inoperable. The 'B' train of the ESCW system was returned to operable status at approximately 0330 EST and remains operable.
"The ESCW system provides cooling support functions to remove decay heat and mitigate the consequences of an accident. There were no safety system actuations during this time period and the plant is stable.
"This condition does not affect the health and safety of the public or station employees. The NRC Resident Inspector has been notified."
The 'A' ESCW pump tripped on low lube oil pressure.
* * * RETRACTION FROM JOHN CAVES TO JOHN SHOEMAKER AT 1756 EST ON 12/14/15 * * *
"Upon further review of the condition, it was determined that the 'A' train of the ESCW system was capable of performing its safety function throughout the time period previously reported, and the 'A' train of the ESCW system was operable. Therefore, there was no loss of safety function. Event notification 51601 is retracted. The NRC Resident Inspector has been informed of this notification retraction."
Notified the R2DO (Guthrie).