Event Notification Report for August 10, 2018
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/09/2018 - 08/10/2018
EVENT NUMBERS
53546
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 53546
Facility: PRAIRIE ISLAND
Region: 3 State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: JEFFREY HUMAN
HQ OPS Officer: OSSY FONT
Region: 3 State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: JEFFREY HUMAN
HQ OPS Officer: OSSY FONT
Notification Date: 08/10/2018
Notification Time: 23:13 [ET]
Event Date: 08/10/2018
Event Time: 00:00 [CDT]
Last Update Date: 09/29/2018
Notification Time: 23:13 [ET]
Event Date: 08/10/2018
Event Time: 00:00 [CDT]
Last Update Date: 09/29/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD 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)(A) - POT UNABLE TO SAFE SD 50.72(b)(3)(v)(B) - POT RHR INOP 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
MICHAEL KUNOWSKI (R3DO)
MICHAEL KUNOWSKI (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
EMERGENCY DIESEL GENERATOR COOLING WATER PUMPS DECLARED INOPERABLE
"On 8/10/2018 at 1445 [CDT] both trains of Cooling Water [Cooling Water Pumps for Emergency Diesel Generators] were declared INOPERABLE and both units entered [Technical Specification] (TS) 3.0.3 due to corroded jacket cooling water plugs for [the] 12 and 22 cooling water pump motors; therefore this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v). At 1543 [CDT], 08/10/2018 the 121 Cooling Water pump was aligned to the "A" Cooling Water train and the TS 3.0.3 condition was exited for both units. [After restoring train A cooling water the site entered a seven day limiting condition for operations, TS 3.7.8 for one inoperable cooling water pump.]
"There was no impact on the health and safety of the public or plant personnel."
The NRC Resident Inspector has been notified.
* * * RETRACTION ON 09/29/2018 AT 2128 EDT FROM BRIAN JOHNSON TO OSSY FONT * * *
"Testing and forensic analysis performed subsequent to the notification has determined the as-found condition would not have impacted either diesel-driven pumps' ability to start, run, and meet flow/pressure requirements to perform their required safety function. Therefore, EN# 53546 is being retracted.
"The NRC Resident Inspector has been notified of the Event Notification retraction."
Notified R3DO (Kozak).
"On 8/10/2018 at 1445 [CDT] both trains of Cooling Water [Cooling Water Pumps for Emergency Diesel Generators] were declared INOPERABLE and both units entered [Technical Specification] (TS) 3.0.3 due to corroded jacket cooling water plugs for [the] 12 and 22 cooling water pump motors; therefore this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v). At 1543 [CDT], 08/10/2018 the 121 Cooling Water pump was aligned to the "A" Cooling Water train and the TS 3.0.3 condition was exited for both units. [After restoring train A cooling water the site entered a seven day limiting condition for operations, TS 3.7.8 for one inoperable cooling water pump.]
"There was no impact on the health and safety of the public or plant personnel."
The NRC Resident Inspector has been notified.
* * * RETRACTION ON 09/29/2018 AT 2128 EDT FROM BRIAN JOHNSON TO OSSY FONT * * *
"Testing and forensic analysis performed subsequent to the notification has determined the as-found condition would not have impacted either diesel-driven pumps' ability to start, run, and meet flow/pressure requirements to perform their required safety function. Therefore, EN# 53546 is being retracted.
"The NRC Resident Inspector has been notified of the Event Notification retraction."
Notified R3DO (Kozak).