Event Notification Report for December 18, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/17/2023 - 12/18/2023
Agreement State
Event Number: 56901
Rep Org: Colorado Dept of Health
Licensee: Medical Center of Aurora
Region: 4
City: Aurora State: CO
County:
License #: CO 205-03
Agreement: Y
Docket:
NRC Notified By: Carrie Romanchek
HQ OPS Officer: Adam Koziol
Licensee: Medical Center of Aurora
Region: 4
City: Aurora State: CO
County:
License #: CO 205-03
Agreement: Y
Docket:
NRC Notified By: Carrie Romanchek
HQ OPS Officer: Adam Koziol
Notification Date: 12/20/2023
Notification Time: 08:04 [ET]
Event Date: 12/18/2023
Event Time: 11:28 [MST]
Last Update Date: 12/20/2023
Notification Time: 08:04 [ET]
Event Date: 12/18/2023
Event Time: 11:28 [MST]
Last Update Date: 12/20/2023
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Taylor, Nick (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Taylor, Nick (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - LEAKING SEALED SOURCE
The following is a summary of information provided by the Colorado Department of Public Health and Environment via email:
The licensee, Medical Center of Aurora, discovered a leaking sealed source on December 18, 2023, during a routine semi-annual inventory and leak test. The sealed source is an Eckert and Ziegler (Serial Number 1360-6-20) Cs-137 vial with estimated current activity of 0.136 millicuries. The plastic vial had been stored in a lead box since the last inspection, but it was discovered that the plastic was cracked. Wipe test showed 0.052 microcuries of removable activity inside the storage box. No contamination was found outside of the box. The source vial will be wrapped in several layers of plastic to stabilize it and limit contamination inside the box. The licensee has contacted the manufacturer to return the source.
Colorado Event Number: CO230044
The following is a summary of information provided by the Colorado Department of Public Health and Environment via email:
The licensee, Medical Center of Aurora, discovered a leaking sealed source on December 18, 2023, during a routine semi-annual inventory and leak test. The sealed source is an Eckert and Ziegler (Serial Number 1360-6-20) Cs-137 vial with estimated current activity of 0.136 millicuries. The plastic vial had been stored in a lead box since the last inspection, but it was discovered that the plastic was cracked. Wipe test showed 0.052 microcuries of removable activity inside the storage box. No contamination was found outside of the box. The source vial will be wrapped in several layers of plastic to stabilize it and limit contamination inside the box. The licensee has contacted the manufacturer to return the source.
Colorado Event Number: CO230044
Power Reactor
Event Number: 56896
Facility: Hatch
Region: 2 State: GA
Unit: [2] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: David Hutto
HQ OPS Officer: Dan Livermore
Region: 2 State: GA
Unit: [2] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: David Hutto
HQ OPS Officer: Dan Livermore
Notification Date: 12/18/2023
Notification Time: 07:40 [ET]
Event Date: 12/18/2023
Event Time: 02:23 [EST]
Last Update Date: 12/18/2023
Notification Time: 07:40 [ET]
Event Date: 12/18/2023
Event Time: 02:23 [EST]
Last Update Date: 12/18/2023
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):
Miller, Mark (R2DO)
Miller, Mark (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
HIGH PRESSURE COOLANT INJECTION SYSTEM INOPERABLE
The following information was provided by the licensee email:
"At 0223 EST, on 12/18/2023, while Unit 2 was at 100 percent power in mode 1, the high pressure coolant injection (HPCI) outboard steam isolation valve closed resulting in the HPCI system being declared inoperable. The cause of the outboard steam isolation valve closing is under investigation. HPCI does not have a redundant system, therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). The safety function was restored at 0512, on 12/18/23, and HPCI has been declared operable. Reactor core isolation cooling (RCIC) and low pressure emergency core cooling systems (ECCS) were operable during this time.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
The following information was provided by the licensee email:
"At 0223 EST, on 12/18/2023, while Unit 2 was at 100 percent power in mode 1, the high pressure coolant injection (HPCI) outboard steam isolation valve closed resulting in the HPCI system being declared inoperable. The cause of the outboard steam isolation valve closing is under investigation. HPCI does not have a redundant system, therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). The safety function was restored at 0512, on 12/18/23, and HPCI has been declared operable. Reactor core isolation cooling (RCIC) and low pressure emergency core cooling systems (ECCS) were operable during this time.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
Part 21
Event Number: 56899
Rep Org: Paragon Energy Solutions
Licensee: Paragon Energy Solutions
Region: 3
City: Fort Worth State: TX
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Richard Knott
HQ OPS Officer: Natalie Starfish
Licensee: Paragon Energy Solutions
Region: 3
City: Fort Worth State: TX
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Richard Knott
HQ OPS Officer: Natalie Starfish
Notification Date: 12/19/2023
Notification Time: 17:34 [ET]
Event Date: 12/18/2023
Event Time: 00:00 [CST]
Last Update Date: 01/17/2024
Notification Time: 17:34 [ET]
Event Date: 12/18/2023
Event Time: 00:00 [CST]
Last Update Date: 01/17/2024
Emergency Class: Non Emergency
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
Person (Organization):
Taylor, Nick (R4DO)
Edwards, Rhex (R3DO)
Part 21/50.55 Reactors, - (EMAIL)
Taylor, Nick (R4DO)
Edwards, Rhex (R3DO)
Part 21/50.55 Reactors, - (EMAIL)
EN Revision Imported Date: 1/18/2024
EN Revision Text: INITIAL PART 21 REPORT - DEFICIENT FUEL INJECTORS
The following is a synopsis of information was provided by the licensee via phone and email:
Pursuant to 10 CFR 21.21(d)(3)(i), Paragon provided initial notification of a defect associated with the auxiliary feedwater pump diesel engine fuel injectors supplied to Constellation. The injectors were provided to Paragon for refurbishment. Constellation provided Paragon with root cause report # 4703982 on November 12, 2023. The associated failure analysis report documented potential defects with some fuel injectors supplied to Braidwood. These reported deficiencies allowed excessive fuel oil leakage which resulted in diesel lubricating oil system contamination above specified limits. Paragon concluded their evaluation on December 18, 2023, which determined that this condition, if left uncorrected, could contribute to a substantial safety hazard and is reportable in accordance with 10 CFR Part 21.
The extent of condition is limited to the Constellation Braidwood and Byron plants.
Paragon has entered this condition in their corrective action program. Affected injectors at Braidwood have been removed from service and returned to Paragon. Paragon is coordinating with Byron on recommended actions and will follow up with a final notification on or before 1/17/2024.
* * * UPDATE ON 1/17/24 AT 1626 EST FROM RICHARD KNOTT TO ADAM KOZIOL * * *
Paragon Energy Solutions submitted a final report for this event.
Notified R3DO (Orlikowski), R4DO (Josey), and Part 21 (email).
EN Revision Text: INITIAL PART 21 REPORT - DEFICIENT FUEL INJECTORS
The following is a synopsis of information was provided by the licensee via phone and email:
Pursuant to 10 CFR 21.21(d)(3)(i), Paragon provided initial notification of a defect associated with the auxiliary feedwater pump diesel engine fuel injectors supplied to Constellation. The injectors were provided to Paragon for refurbishment. Constellation provided Paragon with root cause report # 4703982 on November 12, 2023. The associated failure analysis report documented potential defects with some fuel injectors supplied to Braidwood. These reported deficiencies allowed excessive fuel oil leakage which resulted in diesel lubricating oil system contamination above specified limits. Paragon concluded their evaluation on December 18, 2023, which determined that this condition, if left uncorrected, could contribute to a substantial safety hazard and is reportable in accordance with 10 CFR Part 21.
The extent of condition is limited to the Constellation Braidwood and Byron plants.
Paragon has entered this condition in their corrective action program. Affected injectors at Braidwood have been removed from service and returned to Paragon. Paragon is coordinating with Byron on recommended actions and will follow up with a final notification on or before 1/17/2024.
* * * UPDATE ON 1/17/24 AT 1626 EST FROM RICHARD KNOTT TO ADAM KOZIOL * * *
Paragon Energy Solutions submitted a final report for this event.
Notified R3DO (Orlikowski), R4DO (Josey), and Part 21 (email).