Event Notification Report for July 21, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/20/2020 - 07/21/2020
EVENT NUMBERS
54795547965479754817
Power Reactor
Event Number: 54795
Facility: Browns Ferry
Region: 2 State: AL
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4,[3] GE-4
NRC Notified By: Todd Christensen
HQ OPS Officer: Thomas Herrity
Region: 2 State: AL
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4,[3] GE-4
NRC Notified By: Todd Christensen
HQ OPS Officer: Thomas Herrity
Notification Date: 07/21/2020
Notification Time: 08:58 [ET]
Event Date: 07/21/2020
Event Time: 04:35 [CDT]
Last Update Date: 07/21/2020
Notification Time: 08:58 [ET]
Event Date: 07/21/2020
Event Time: 04:35 [CDT]
Last Update Date: 07/21/2020
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical 50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical 50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
Person (Organization):
MARK MILLER (R2DO)
MARK MILLER (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 40 | Power Operation | 0 | Hot Shutdown |
BIOFOULING OF INTAKE STRUCTURE LEADS TO MANUAL REACTOR SCRAM OF UNIT 1
The following was received from TVA - Brown's Ferry at 0858, 21 July 20.
"On July 21, 2020, at 0435 hours Central Daylight Time, Browns Ferry Unit 1 inserted a manual reactor scram due to degrading main condenser vacuum from marine biofouling at the intake structure. Browns Ferry Unit 2 is in Mode 4 and Browns Ferry Unit 3 is at approximately 76% rated thermal power and stable.
"Primary Containment Isolation Systems received an actuation signal for groups 2, 3, 6, 8 on reactor water level below +2". All Primary Containment Isolation System groups that received an actuation signal performed as designed. Additionally, all other systems functioned as designed.
"This event is reportable within 4 hours per 10CFR50.72(b)(2)(iv)(B) - Any event or condition that results in actuation of the reactor protection system (RPS) when the reactor is critical except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation.
"This event also requires an 8 hour report per 10CFR50.72(b )(3)(iv)(A), Any event or condition that results in valid actuation of any of the systems listed in paragraph (b)(3)(iv)(B), (1) Reactor protection system (RPS) including: reactor scram or reactor trip, except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation and (2) General containment isolation signals affecting containment isolation valves in more than one system or multiple main steam isolation valves (MSIVs).
"The NRC Resident Inspector has been notified."
The plant is stable in Mode 3 and will remain shutdown until marine growth clogging the intake structure abates.
The following was received from TVA - Brown's Ferry at 0858, 21 July 20.
"On July 21, 2020, at 0435 hours Central Daylight Time, Browns Ferry Unit 1 inserted a manual reactor scram due to degrading main condenser vacuum from marine biofouling at the intake structure. Browns Ferry Unit 2 is in Mode 4 and Browns Ferry Unit 3 is at approximately 76% rated thermal power and stable.
"Primary Containment Isolation Systems received an actuation signal for groups 2, 3, 6, 8 on reactor water level below +2". All Primary Containment Isolation System groups that received an actuation signal performed as designed. Additionally, all other systems functioned as designed.
"This event is reportable within 4 hours per 10CFR50.72(b)(2)(iv)(B) - Any event or condition that results in actuation of the reactor protection system (RPS) when the reactor is critical except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation.
"This event also requires an 8 hour report per 10CFR50.72(b )(3)(iv)(A), Any event or condition that results in valid actuation of any of the systems listed in paragraph (b)(3)(iv)(B), (1) Reactor protection system (RPS) including: reactor scram or reactor trip, except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation and (2) General containment isolation signals affecting containment isolation valves in more than one system or multiple main steam isolation valves (MSIVs).
"The NRC Resident Inspector has been notified."
The plant is stable in Mode 3 and will remain shutdown until marine growth clogging the intake structure abates.
Power Reactor
Event Number: 54796
Facility: Robinson
Region: 2 State: SC
Unit: [2] [] []
RX Type: [2] W-3-LP
NRC Notified By: Kirk Schauer
HQ OPS Officer: Ossy Font
Region: 2 State: SC
Unit: [2] [] []
RX Type: [2] W-3-LP
NRC Notified By: Kirk Schauer
HQ OPS Officer: Ossy Font
Notification Date: 07/21/2020
Notification Time: 12:42 [ET]
Event Date: 07/21/2020
Event Time: 08:51 [EDT]
Last Update Date: 07/21/2020
Notification Time: 12:42 [ET]
Event Date: 07/21/2020
Event Time: 08:51 [EDT]
Last Update Date: 07/21/2020
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):
MARK MILLER (R2DO)
MARK MILLER (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 99 | Power Operation |
TECHNICAL SPECIFICATION REQUIRED SHUTDOWN
"At 0851 EDT on July 21, 2020, a Technical Specification required shutdown was initiated at Robinson Unit 2. Technical Specification LCO 3.0.3 was entered due to LCO 3.1.7 not being met as a result of indication loss on Control Rod positions with more than one position indication inoperable for a group. LCO 3.0.3 was entered at 0752 EDT to initiate action within 1 hour to place the unit in MODE 3 within 7 hours. Since a Technical Specification required shutdown was initiated, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(i).
"Technical Specification LCO 3.0.3 was exited at 1003 EDT on July 21, 2020.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
Shutdown was initiated and power was reduced approximately 3 percent. Reactor power was back to 98.5 percent at the time of notification.
"At 0851 EDT on July 21, 2020, a Technical Specification required shutdown was initiated at Robinson Unit 2. Technical Specification LCO 3.0.3 was entered due to LCO 3.1.7 not being met as a result of indication loss on Control Rod positions with more than one position indication inoperable for a group. LCO 3.0.3 was entered at 0752 EDT to initiate action within 1 hour to place the unit in MODE 3 within 7 hours. Since a Technical Specification required shutdown was initiated, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(i).
"Technical Specification LCO 3.0.3 was exited at 1003 EDT on July 21, 2020.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
Shutdown was initiated and power was reduced approximately 3 percent. Reactor power was back to 98.5 percent at the time of notification.
Fuel Cycle Facility
Event Number: 54797
Facility: Global Nuclear Fuel - Americas
Region: 2 State: NC
Unit: [] [] []
RX Type: Uranium Fuel Fabrication
Comments: Leu Conversion (Uf6 To Uo2)
Leu Fabrication
Lwr Commerical Fuel
NRC Notified By: Phillip Ollis
HQ OPS Officer: Thomas Herrity
Region: 2 State: NC
Unit: [] [] []
RX Type: Uranium Fuel Fabrication
Comments: Leu Conversion (Uf6 To Uo2)
Leu Fabrication
Lwr Commerical Fuel
NRC Notified By: Phillip Ollis
HQ OPS Officer: Thomas Herrity
Notification Date: 07/22/2020
Notification Time: 10:04 [ET]
Event Date: 07/21/2020
Event Time: 10:30 [EDT]
Last Update Date: 07/22/2020
Notification Time: 10:04 [ET]
Event Date: 07/21/2020
Event Time: 10:30 [EDT]
Last Update Date: 07/22/2020
Emergency Class: Non Emergency
10 CFR Section:
PART 70 APP A (c) - Offsite Notification/News Rel
10 CFR Section:
PART 70 APP A (c) - Offsite Notification/News Rel
Person (Organization):
MARK MILLER (R2DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
MARK MILLER (R2DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
CONCURRENT REPORT FOR FIRE SUPPRESION OUT OF SERVICE
The following was received from Global Nuclear Fuels, America:
"At 1030 (EDT) on July 21st, 2020, the New Hanover County Deputy Fire Marshall was notified per State code requirements that the fire suppression system for the Fuel Manufacturing Operation Sandblast Building was impaired. An underground pipe that feeds water to the sprinkler system had developed a leak. The building is normally unoccupied and no other buildings are affected. Compensatory measures were enacted and communicated to the Deputy Fire Marshall. Because the New Hanover County Deputy Fire Marshall was notified, a concurrent notification to the NRC Operations Center is being made per 10 CFR 70, Appendix A(c)."
The licensee will notify Region 2.
The following was received from Global Nuclear Fuels, America:
"At 1030 (EDT) on July 21st, 2020, the New Hanover County Deputy Fire Marshall was notified per State code requirements that the fire suppression system for the Fuel Manufacturing Operation Sandblast Building was impaired. An underground pipe that feeds water to the sprinkler system had developed a leak. The building is normally unoccupied and no other buildings are affected. Compensatory measures were enacted and communicated to the Deputy Fire Marshall. Because the New Hanover County Deputy Fire Marshall was notified, a concurrent notification to the NRC Operations Center is being made per 10 CFR 70, Appendix A(c)."
The licensee will notify Region 2.
Agreement State
Event Number: 54817
Rep Org: GEORGIA RADIOACTIVE MATERIAL PGM
Licensee: International Paper Savannah Mill
Region: 1
City: Savannah State: GA
County:
License #: 143-1
Agreement: Y
Docket:
NRC Notified By: Shatavia Walker
HQ OPS Officer: Andrew Waugh
Licensee: International Paper Savannah Mill
Region: 1
City: Savannah State: GA
County:
License #: 143-1
Agreement: Y
Docket:
NRC Notified By: Shatavia Walker
HQ OPS Officer: Andrew Waugh
Notification Date: 08/05/2020
Notification Time: 13:19 [ET]
Event Date: 07/21/2020
Event Time: 00:00 [EDT]
Last Update Date: 10/15/2020
Notification Time: 13:19 [ET]
Event Date: 07/21/2020
Event Time: 00:00 [EDT]
Last Update Date: 10/15/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
FRANK ARNER (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
FRANK ARNER (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
EN Revision Imported Date : 10/16/2020
EN Revision Text: AGREEMENT STATE REPORT - BROKEN SHUTTER
The following is a summary of information received via email:
On July 21, 2020, the licensee was conducting a semi-annual leak test and inventory when they discovered a shutter was not working on an in service source device. The source has been barricaded and appropriate warnings have been posted. An offsite technician is being contacted to replace the device.
The device is an Ohmart Model A-2102 density gauge with a 100 mCi Cs-137 source.
* * * UPDATE ON 8/6/20 AT 1757 EDT FROM SHATAVIA WALKER TO ANDREW WAUGH * * *
The following is a summary of information received via email:
The broken shutter concerned in this event was stuck in the open position.
Notified R1DO (Arner) and NMSS Event Notifications via email.
* * * UPDATE ON 10/15/2020 AT 1614 EDT FROM THOMAS GRAFTON TO OSSY FONT * * *
The following update was received from the state of Georgia via email:
"A qualified technician from BBP installed the new source on September 23, 2020. The old source was sent back to QSA [Global, Inc.] with a confirmation receipt [dated October 2, 2020]."
Notified R1DO (Jackson) and NMSS Events Notification via email.