Event Notification Report for May 16, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/15/2023 - 05/16/2023
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 56520
Facility: Wolf Creek
Region: 4 State: KS
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: David Christiansen
HQ OPS Officer: Sam Colvard
Region: 4 State: KS
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: David Christiansen
HQ OPS Officer: Sam Colvard
Notification Date: 05/16/2023
Notification Time: 17:20 [ET]
Event Date: 05/16/2023
Event Time: 11:27 [CDT]
Last Update Date: 06/05/2023
Notification Time: 17:20 [ET]
Event Date: 05/16/2023
Event Time: 11:27 [CDT]
Last Update Date: 06/05/2023
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(C) - Pot Uncntrl Rad Rel 50.72(b)(3)(v)(D) - Accident Mitigation
10 CFR Section:
50.72(b)(3)(v)(C) - Pot Uncntrl Rad Rel 50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
Azua, Ray (R4DO)
Azua, Ray (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
EN Revision Imported Date: 6/6/2023
EN Revision Text: EMERGENCY EXHAUST INOPERABLE
The following information was provided by the licensee via phone and email:
"At 1127 CDT on 5/16/2023, during the reperformance of test procedure 'STS PE-006, Charcoal Adsorber In-Place Leak Test' due to a failure from the previous day, both trains of emergency exhaust were rendered inoperable due to incorrect performance of the procedure. Performers incorrectly de-energized the humidity control heating coil for the unit not under test, rendering it inoperable. This issue was identified and rectified at 1138 CDT on 5/16/2023, exiting the LCO [limiting condition of operation] for both trains inoperable at that time. There was no impact to the health and safety of the public."
* * * RETRACTION ON 6/5/2023 AT 1132 EDT FROM JASON KNUST TO HOWIE CROUCH * * *
"The initial failure of the STS PE-006 test was caused by a malfunction of the test equipment which initially injected excessive amounts of tracer gas and caused saturation of the charcoal. Using test equipment sourced from Callaway, and following guidance from the vendor, STS PE-006 test was successfully passed on 5/17/2023. No maintenance or intrusive testing was performed on the unit between initial test failure and satisfactory completion of the test. Because this train of emergency exhaust was not actually inoperable at the time the second train was rendered inoperable due to incorrect procedure performance, there was no loss of safety function. Therefore, this event notification is being retracted."
The licensee has notified the NRC Resident Inspector. Notified R4DO (Gepford).
EN Revision Text: EMERGENCY EXHAUST INOPERABLE
The following information was provided by the licensee via phone and email:
"At 1127 CDT on 5/16/2023, during the reperformance of test procedure 'STS PE-006, Charcoal Adsorber In-Place Leak Test' due to a failure from the previous day, both trains of emergency exhaust were rendered inoperable due to incorrect performance of the procedure. Performers incorrectly de-energized the humidity control heating coil for the unit not under test, rendering it inoperable. This issue was identified and rectified at 1138 CDT on 5/16/2023, exiting the LCO [limiting condition of operation] for both trains inoperable at that time. There was no impact to the health and safety of the public."
* * * RETRACTION ON 6/5/2023 AT 1132 EDT FROM JASON KNUST TO HOWIE CROUCH * * *
"The initial failure of the STS PE-006 test was caused by a malfunction of the test equipment which initially injected excessive amounts of tracer gas and caused saturation of the charcoal. Using test equipment sourced from Callaway, and following guidance from the vendor, STS PE-006 test was successfully passed on 5/17/2023. No maintenance or intrusive testing was performed on the unit between initial test failure and satisfactory completion of the test. Because this train of emergency exhaust was not actually inoperable at the time the second train was rendered inoperable due to incorrect procedure performance, there was no loss of safety function. Therefore, this event notification is being retracted."
The licensee has notified the NRC Resident Inspector. Notified R4DO (Gepford).
Power Reactor
Event Number: 56521
Facility: South Texas
Region: 4 State: TX
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Dustin Janak
HQ OPS Officer: Brian P. Smith
Region: 4 State: TX
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Dustin Janak
HQ OPS Officer: Brian P. Smith
Notification Date: 05/17/2023
Notification Time: 03:25 [ET]
Event Date: 05/16/2023
Event Time: 16:30 [CDT]
Last Update Date: 05/17/2023
Notification Time: 03:25 [ET]
Event Date: 05/16/2023
Event Time: 16:30 [CDT]
Last Update Date: 05/17/2023
Emergency Class: Non Emergency
10 CFR Section:
26.719 - Fitness For Duty
10 CFR Section:
26.719 - Fitness For Duty
Person (Organization):
Azua, Ray (R4DO)
FFD Group, (EMAIL)
Azua, Ray (R4DO)
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 |
FITNESS-FOR-DUTY VIOLATION
The following information was provided by the licensee via email:
"On May 16, 2023, it was determined that a licensed operator violated the station's FFD policy. The employee's unescorted access at South Texas has been terminated. This event was determined to be reportable under 10 CFR 26.719(b)(2)(ii).
"The NRC resident inspector has been notified."
The following information was provided by the licensee via email:
"On May 16, 2023, it was determined that a licensed operator violated the station's FFD policy. The employee's unescorted access at South Texas has been terminated. This event was determined to be reportable under 10 CFR 26.719(b)(2)(ii).
"The NRC resident inspector has been notified."