Event Notification Report for August 19, 2022
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/18/2022 - 08/19/2022
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 56058
Facility: Grand Gulf
Region: 4 State: MS
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Paul Lyne
HQ OPS Officer: Donald Norwood
Region: 4 State: MS
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Paul Lyne
HQ OPS Officer: Donald Norwood
Notification Date: 08/19/2022
Notification Time: 20:46 [ET]
Event Date: 08/19/2022
Event Time: 12:15 [CDT]
Last Update Date: 10/17/2022
Notification Time: 20:46 [ET]
Event Date: 08/19/2022
Event Time: 12:15 [CDT]
Last Update Date: 10/17/2022
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
Werner, Greg (R4DO)
Werner, Greg (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 63 | Power Operation |
EN Revision Imported Date: 10/17/2022
EN Revision Text: FOUR AUTOMATIC DEPRESSURIZATION SYSTEM VALVES INOPERABLE
The following information was provided by the licensee via email:
"At 1215 CDT on 8/19/2022, with Grand Gulf Nuclear Station in Mode 1 and at 100 percent power, four Automatic Depressurization System (ADS) valves were rendered inoperable due to a loss of system pressure. The station entered Technical Specification 3.5.1 Condition G.
"This event is being reported under 10 CFR 50.72(b)(3)(v)(D) as an event or condition that could have prevented the fulfillment of a safety function.
"There were no other systems affected as a result of this condition.
"The NRC Senior Resident Inspector was notified."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: Plans are to remain in Mode 1 until corrected or until driven by the Technical Specifications to shut down (12-hour LCO from 1215 CDT on 8/19/2022).
* * * RETRACTION ON 10/14/22 AT 1311 EDT FROM JEFF HARDY TO KAREN COTTON * * *
"Grand Gulf Nuclear Station (GGNS) is performing this notification to retract event EN 56058 that was reported on August 19, 2022. Previously, GGNS notified the NRC that four Automatic Depressurization System (ADS) valves were inoperable due to a loss of system pressure.
"Based upon further investigation, the condition reported in EN 56058 was found to affect only a single ADS valve. As a result, it was determined that an event or condition that could have prevented the fulfillment of a safety function did not exist at GGNS. Sufficient redundancy existed to perform the safety function.
"The NRC Resident Inspector has been notified of the retraction."
R4DO (Kellar) was notified.
EN Revision Text: FOUR AUTOMATIC DEPRESSURIZATION SYSTEM VALVES INOPERABLE
The following information was provided by the licensee via email:
"At 1215 CDT on 8/19/2022, with Grand Gulf Nuclear Station in Mode 1 and at 100 percent power, four Automatic Depressurization System (ADS) valves were rendered inoperable due to a loss of system pressure. The station entered Technical Specification 3.5.1 Condition G.
"This event is being reported under 10 CFR 50.72(b)(3)(v)(D) as an event or condition that could have prevented the fulfillment of a safety function.
"There were no other systems affected as a result of this condition.
"The NRC Senior Resident Inspector was notified."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: Plans are to remain in Mode 1 until corrected or until driven by the Technical Specifications to shut down (12-hour LCO from 1215 CDT on 8/19/2022).
* * * RETRACTION ON 10/14/22 AT 1311 EDT FROM JEFF HARDY TO KAREN COTTON * * *
"Grand Gulf Nuclear Station (GGNS) is performing this notification to retract event EN 56058 that was reported on August 19, 2022. Previously, GGNS notified the NRC that four Automatic Depressurization System (ADS) valves were inoperable due to a loss of system pressure.
"Based upon further investigation, the condition reported in EN 56058 was found to affect only a single ADS valve. As a result, it was determined that an event or condition that could have prevented the fulfillment of a safety function did not exist at GGNS. Sufficient redundancy existed to perform the safety function.
"The NRC Resident Inspector has been notified of the retraction."
R4DO (Kellar) was notified.
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 56059
Facility: Grand Gulf
Region: 4 State: MS
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Paul Lyne
HQ OPS Officer: Bethany Cecere
Region: 4 State: MS
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Paul Lyne
HQ OPS Officer: Bethany Cecere
Notification Date: 08/20/2022
Notification Time: 02:11 [ET]
Event Date: 08/19/2022
Event Time: 23:42 [CDT]
Last Update Date: 10/17/2022
Notification Time: 02:11 [ET]
Event Date: 08/19/2022
Event Time: 23:42 [CDT]
Last Update Date: 10/17/2022
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(i) - Plant S/D Reqd By Ts
10 CFR Section:
50.72(b)(2)(i) - Plant S/D Reqd By Ts
Person (Organization):
Werner, Greg (R4DO)
Werner, Greg (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 40 | Power Operation | 0 | Hot Standby |
EN Revision Imported Date: 10/17/2022
EN Revision Text: TECHNICAL SPECIFICATION REQUIRED SHUTDOWN
The following information was provided by the licensee via fax or email:
"At 2342 CDT on August 19, 2022, with Grand Gulf Nuclear Station in Mode 1 and at 40 percent power, the station initiated a normal shutdown to comply with its Technical Specifications (TS). The station entered Mode 3 at 0000 CDT August 20, 2022 to comply with (LCO) 3.5.1 Condition G Action G.1 due to the condition reported to NRC previously (EN 56058).
"This event is being reported under 10 CFR 50.72(b)(2)(i) as a shutdown required by the plant's technical specifications.
"The NRC Senior Resident Inspector was notified."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The plant is now in a 36-hour LCO to be in Mode 4 due to Low Low Set Valves inoperability per TS 3.6.1.6.
* * * RETRACTION ON 10/14/2022 AT 1311 FROM JEFF HARDY TO LAUREN BRYSON * * *
"Grand Gulf Nuclear Station (GGNS) is performing this notification to retract event EN 56059 that was reported on August 20, 2022. Previously, GGNS notified the NRC that it had initiated a shutdown required by Technical Specifications to comply with Limiting Condition of Operation (LCO) 3.5.1 Condition G.1 due to the inoperability of four Automatic Depressurization System (ADS) valves.
"Following the shutdown, GGNS completed walkdowns and determined that the condition affected only one ADS valve. As a result, the shutdown to satisfy the required actions of TS LCO 3.5.1 Condition G.1 was not required.
"The NRC Resident Inspector has been notified of the retraction."
R4DO (Kellar) was notified.
EN Revision Text: TECHNICAL SPECIFICATION REQUIRED SHUTDOWN
The following information was provided by the licensee via fax or email:
"At 2342 CDT on August 19, 2022, with Grand Gulf Nuclear Station in Mode 1 and at 40 percent power, the station initiated a normal shutdown to comply with its Technical Specifications (TS). The station entered Mode 3 at 0000 CDT August 20, 2022 to comply with (LCO) 3.5.1 Condition G Action G.1 due to the condition reported to NRC previously (EN 56058).
"This event is being reported under 10 CFR 50.72(b)(2)(i) as a shutdown required by the plant's technical specifications.
"The NRC Senior Resident Inspector was notified."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The plant is now in a 36-hour LCO to be in Mode 4 due to Low Low Set Valves inoperability per TS 3.6.1.6.
* * * RETRACTION ON 10/14/2022 AT 1311 FROM JEFF HARDY TO LAUREN BRYSON * * *
"Grand Gulf Nuclear Station (GGNS) is performing this notification to retract event EN 56059 that was reported on August 20, 2022. Previously, GGNS notified the NRC that it had initiated a shutdown required by Technical Specifications to comply with Limiting Condition of Operation (LCO) 3.5.1 Condition G.1 due to the inoperability of four Automatic Depressurization System (ADS) valves.
"Following the shutdown, GGNS completed walkdowns and determined that the condition affected only one ADS valve. As a result, the shutdown to satisfy the required actions of TS LCO 3.5.1 Condition G.1 was not required.
"The NRC Resident Inspector has been notified of the retraction."
R4DO (Kellar) was notified.
Power Reactor
Event Number: 56060
Facility: Braidwood
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Rich Rowe
HQ OPS Officer: Donald Norwood
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Rich Rowe
HQ OPS Officer: Donald Norwood
Notification Date: 08/20/2022
Notification Time: 12:33 [ET]
Event Date: 08/19/2022
Event Time: 21:17 [CDT]
Last Update Date: 08/20/2022
Notification Time: 12:33 [ET]
Event Date: 08/19/2022
Event Time: 21:17 [CDT]
Last Update Date: 08/20/2022
Emergency Class: Non Emergency
10 CFR Section:
26.719 - Fitness For Duty
10 CFR Section:
26.719 - Fitness For Duty
Person (Organization):
Orth, Steve (R3DO)
FFD Group, (EMAIL)
Orth, Steve (R3DO)
FFD Group, (EMAIL)
| 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 |
ALCOHOL DISCOVERED WITHIN THE PROTECTED AREA
A non-licensed, non-supervisory employee had a confirmed positive for alcohol during a for-cause fitness-for-duty test. Subsequent investigation revealed the presence of alcohol within the Protected Area. The employee's access to the plant has been terminated.
A non-licensed, non-supervisory employee had a confirmed positive for alcohol during a for-cause fitness-for-duty test. Subsequent investigation revealed the presence of alcohol within the Protected Area. The employee's access to the plant has been terminated.