Event Notification Report for May 05, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/04/2021 - 05/05/2021
Agreement State
Event Number: 55238
Rep Org: FLORIDA BUREAU OF RADIATION CONTROL
Licensee: Ascend Performance Materials
Region: 1
City: Cantonment State: FL
County: Escambia
License #: 4145-2
Agreement: Y
Docket:
NRC Notified By: David Pieski
HQ OPS Officer: Thomas Herrity
Licensee: Ascend Performance Materials
Region: 1
City: Cantonment State: FL
County: Escambia
License #: 4145-2
Agreement: Y
Docket:
NRC Notified By: David Pieski
HQ OPS Officer: Thomas Herrity
Notification Date: 05/06/2021
Notification Time: 13:59 [ET]
Event Date: 05/05/2021
Event Time: 00:00 [EDT]
Last Update Date: 05/06/2021
Notification Time: 13:59 [ET]
Event Date: 05/05/2021
Event Time: 00:00 [EDT]
Last Update Date: 05/06/2021
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
YOUNG, MATT (R1DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
RIVERA-CAPELLA, GRETCHEN (NMSS DAY)
YOUNG, MATT (R1DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
RIVERA-CAPELLA, GRETCHEN (NMSS DAY)
EN Revision Imported Date: 6/4/2021
EN Revision Text: AGREEMENT STATE REPORT - FIRE DAMAGE PREVENTS LEVEL GAUGE RETRACTION
The following was reported by the State of Florida via email:
"On 5/5/21 a fire occurred on the same floor as the nylon finishing line using a nuclear gauge (level switch). Fire extinguished by in-house [personnel] on-site as well as Escambia County fire depts. After a structural review was completed and entrance safety assured, continued property examination on 5/6 revealed the nuclear gauge could not be shuttered. No injuries were reported. No exposures were reported. Exclusion zones have been marked on the finishing line floor as well as adjacent floor. At the time of this report, Ascend [Performance Material] is evaluating contractor availability for gauge assessment concerning repair and/or removal. Plant contact person reported the 1500 milliCurie source was purchased in 1962."
Florida Incident Number: FL21-060.
EN Revision Text: AGREEMENT STATE REPORT - FIRE DAMAGE PREVENTS LEVEL GAUGE RETRACTION
The following was reported by the State of Florida via email:
"On 5/5/21 a fire occurred on the same floor as the nylon finishing line using a nuclear gauge (level switch). Fire extinguished by in-house [personnel] on-site as well as Escambia County fire depts. After a structural review was completed and entrance safety assured, continued property examination on 5/6 revealed the nuclear gauge could not be shuttered. No injuries were reported. No exposures were reported. Exclusion zones have been marked on the finishing line floor as well as adjacent floor. At the time of this report, Ascend [Performance Material] is evaluating contractor availability for gauge assessment concerning repair and/or removal. Plant contact person reported the 1500 milliCurie source was purchased in 1962."
Florida Incident Number: FL21-060.
Power Reactor
Event Number: 55244
Facility: Monticello
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: Gustavo Hernandez
HQ OPS Officer: Bethany Cecere
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: Gustavo Hernandez
HQ OPS Officer: Bethany Cecere
Notification Date: 05/07/2021
Notification Time: 17:21 [ET]
Event Date: 05/05/2021
Event Time: 00:00 [CDT]
Last Update Date: 05/07/2021
Notification Time: 17:21 [ET]
Event Date: 05/05/2021
Event Time: 00:00 [CDT]
Last Update Date: 05/07/2021
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):
ORLIKOWSKI, ROBERT (R3)
PART 21/50.55 REACTORS, - (EMAIL)
ORLIKOWSKI, ROBERT (R3)
PART 21/50.55 REACTORS, - (EMAIL)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown |
EN Revision Imported Date: 6/7/2021
EN Revision Text: PART 21 - POWER RANGE NEUTRON MONITOR SYSTEM DEFECT
The following is a summary of information received via email from Monticello Nuclear Generating Plant (MNGP):
On March 9, 2021, GE Hitachi (GEH) issued Safety Communication SC 21-02 for PRC 21-02, Transfer of Information, Revision 0, pursuant to 10 CFR 21.21(b). Monticello Nuclear Generating Plant (MNGP) was listed as a potentially affected plant. This is a deviation from the Power Range Nuclear Monitor (PRNM) Licensing Topical Report, NEDC 32410P-A.
On May 5, 2021, MNGP completed an evaluation of this deviation and concluded this condition represents a substantial safety hazard in that the condition could result in an Average Power Range Monitoring (APRM) flux reading either below or above the Technical Specification (plus/minus) 2% band. The condition is a defect that is reportable pursuant to 10 CFR 21.21(d)(4).
The GEH NUMAC PRNMS was installed in 2009 with System Part No. 299X739NF.
Name and Address of the Individual or Individuals Informing the Commission:
Thomas A. Conboy,
Site Vice President
Monticello Nuclear Generating Plant
Northern States Power Company - Minnesota
2807 West County Road 75
Monticello, MN 55362
The licensee notified the NRC Resident Inspector.
EN Revision Text: PART 21 - POWER RANGE NEUTRON MONITOR SYSTEM DEFECT
The following is a summary of information received via email from Monticello Nuclear Generating Plant (MNGP):
On March 9, 2021, GE Hitachi (GEH) issued Safety Communication SC 21-02 for PRC 21-02, Transfer of Information, Revision 0, pursuant to 10 CFR 21.21(b). Monticello Nuclear Generating Plant (MNGP) was listed as a potentially affected plant. This is a deviation from the Power Range Nuclear Monitor (PRNM) Licensing Topical Report, NEDC 32410P-A.
On May 5, 2021, MNGP completed an evaluation of this deviation and concluded this condition represents a substantial safety hazard in that the condition could result in an Average Power Range Monitoring (APRM) flux reading either below or above the Technical Specification (plus/minus) 2% band. The condition is a defect that is reportable pursuant to 10 CFR 21.21(d)(4).
The GEH NUMAC PRNMS was installed in 2009 with System Part No. 299X739NF.
Name and Address of the Individual or Individuals Informing the Commission:
Thomas A. Conboy,
Site Vice President
Monticello Nuclear Generating Plant
Northern States Power Company - Minnesota
2807 West County Road 75
Monticello, MN 55362
The licensee notified the NRC Resident Inspector.
Part 21
Event Number: 56920
Rep Org: V. C. Summer
Licensee: V. C. Summer
Region: 2
City: Jenkinsville State: SC
County: Fairfield
License #:
Agreement: Y
Docket:
NRC Notified By: Justin Bouknight
HQ OPS Officer: Thomas Herrity
Licensee: V. C. Summer
Region: 2
City: Jenkinsville State: SC
County: Fairfield
License #:
Agreement: Y
Docket:
NRC Notified By: Justin Bouknight
HQ OPS Officer: Thomas Herrity
Notification Date: 01/10/2024
Notification Time: 08:18 [ET]
Event Date: 05/05/2021
Event Time: 00:00 [EST]
Last Update Date: 01/17/2024
Notification Time: 08:18 [ET]
Event Date: 05/05/2021
Event Time: 00:00 [EST]
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):
Miller, Mark (R2DO)
Part 21/50.55 Reactors, - (EMAIL)
Miller, Mark (R2DO)
Part 21/50.55 Reactors, - (EMAIL)
EN Revision Imported Date: 1/18/2024
EN Revision Text: PART 21 - GOULD FIELD FLASH RELAY ON EMERGENCY DIESEL FAILED
The following information was provided by the licensee via email and phone call:
"On January 9, 2024, VC Summer Nuclear Station (VCSNS) determined a manufacturing defect affecting a field flash contactor (K2) relay on its 'B' emergency diesel generator (EDG) was reportable under Part 21.
"During testing on May 5, 2021, the 'B' EDG was rendered inoperable when its K2 relay coil switch exhibited intermittent binding due to insufficient clearances of the switch actuator from the protective case and plastic switch molding. The inadequate clearances resulted in accelerated loss of graphite lubrication at these locations, which led to mechanical binding. VCSNS replaced the affected relay and restored operability of its 'B' EDG.
"Manufacturer/Model: Gould F10NOCLD1 DC coil switch
"A written notification in accordance with 10 CFR 21.21(d)(3)(ii) will be provided within 30 days. The NRC Senior Resident Inspector has been notified."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee did not notify the intellectual property owner because the manufacturer is no longer operating or in business. They are not aware of other plants that utilize this coil switch.
EN Revision Text: PART 21 - GOULD FIELD FLASH RELAY ON EMERGENCY DIESEL FAILED
The following information was provided by the licensee via email and phone call:
"On January 9, 2024, VC Summer Nuclear Station (VCSNS) determined a manufacturing defect affecting a field flash contactor (K2) relay on its 'B' emergency diesel generator (EDG) was reportable under Part 21.
"During testing on May 5, 2021, the 'B' EDG was rendered inoperable when its K2 relay coil switch exhibited intermittent binding due to insufficient clearances of the switch actuator from the protective case and plastic switch molding. The inadequate clearances resulted in accelerated loss of graphite lubrication at these locations, which led to mechanical binding. VCSNS replaced the affected relay and restored operability of its 'B' EDG.
"Manufacturer/Model: Gould F10NOCLD1 DC coil switch
"A written notification in accordance with 10 CFR 21.21(d)(3)(ii) will be provided within 30 days. The NRC Senior Resident Inspector has been notified."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee did not notify the intellectual property owner because the manufacturer is no longer operating or in business. They are not aware of other plants that utilize this coil switch.