Event Notification Report for August 22, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/21/2021 - 08/22/2021
Power Reactor
Event Number: 55425
Facility: Columbia Generating Station
Region: 4 State: WA
Unit: [2] [] []
RX Type: [2] GE-5
NRC Notified By: Dan Sharpe
HQ OPS Officer: Thomas Kendzia
Region: 4 State: WA
Unit: [2] [] []
RX Type: [2] GE-5
NRC Notified By: Dan Sharpe
HQ OPS Officer: Thomas Kendzia
Notification Date: 08/23/2021
Notification Time: 23:20 [ET]
Event Date: 08/22/2021
Event Time: 08:30 [PDT]
Last Update Date: 08/23/2021
Notification Time: 23:20 [ET]
Event Date: 08/22/2021
Event Time: 08:30 [PDT]
Last Update Date: 08/23/2021
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
Person (Organization):
KOZAL, JASON (R4)
KOZAL, JASON (R4)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
EN Revision Imported Date: 9/23/2021
EN Revision Text: OFFSITE NOTIFICATION OF POTENTIAL OIL DISCHARGE
"On August 22, 2021, Columbia Generating Station determined that no more than approximately eight (8) gallons of silicone oil was inadvertently released into a plant service water system due to a failed heat exchanger on a plant installed air compressor. The plant service water system returns water to a water basin that contains at a minimum 300,000 gallons of water. The water basin is connected to the Columbia River via a blowdown line. Although not confirmed, it is suspected that an unknown quantity of silicone oil may have been released to the Columbia River. A visual inspection of the basin did not identify any oil sheen or film, and there are no additional actions needed to mitigate this issue. It does not appear the oil release poses a threat to human health or the environment, however because there could have been a discharge of an unknown quantity of silicone oil into the Columbia River this matter is immediately reportable under RCW 90.56.280 to the US Coast Guard National Response Center and Washington State Department of Ecology.
"This condition is being reported pursuant to 10 CFR 50.72(b)(2)(xi) for news release or notification of other government agencies concerning an event related to the health and safety of the public or protection of the environment. Notifications to off-site agencies were performed at 1825 PDT on 8/23/2021. The NRC resident has been informed."
EN Revision Text: OFFSITE NOTIFICATION OF POTENTIAL OIL DISCHARGE
"On August 22, 2021, Columbia Generating Station determined that no more than approximately eight (8) gallons of silicone oil was inadvertently released into a plant service water system due to a failed heat exchanger on a plant installed air compressor. The plant service water system returns water to a water basin that contains at a minimum 300,000 gallons of water. The water basin is connected to the Columbia River via a blowdown line. Although not confirmed, it is suspected that an unknown quantity of silicone oil may have been released to the Columbia River. A visual inspection of the basin did not identify any oil sheen or film, and there are no additional actions needed to mitigate this issue. It does not appear the oil release poses a threat to human health or the environment, however because there could have been a discharge of an unknown quantity of silicone oil into the Columbia River this matter is immediately reportable under RCW 90.56.280 to the US Coast Guard National Response Center and Washington State Department of Ecology.
"This condition is being reported pursuant to 10 CFR 50.72(b)(2)(xi) for news release or notification of other government agencies concerning an event related to the health and safety of the public or protection of the environment. Notifications to off-site agencies were performed at 1825 PDT on 8/23/2021. The NRC resident has been informed."
Power Reactor
Event Number: 55423
Facility: Fermi
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: Whitney Hemingway
HQ OPS Officer: Thomas Kendzia
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: Whitney Hemingway
HQ OPS Officer: Thomas Kendzia
Notification Date: 08/22/2021
Notification Time: 12:10 [ET]
Event Date: 08/22/2021
Event Time: 05:29 [EDT]
Last Update Date: 08/22/2021
Notification Time: 12:10 [ET]
Event Date: 08/22/2021
Event Time: 05:29 [EDT]
Last Update Date: 08/22/2021
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):
PETERSON, HIRONORI (R3)
PETERSON, HIRONORI (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
EN Revision Imported Date: 9/22/2021
EN Revision Text: HPCI DECLARED INOPERABLE
"At 0529 EDT on August 22, 2021, HPCI [(High Pressure Coolant Injection System)] was declared inoperable due to receiving the HPCI Inverter Circuit Failure annunciator. The cause of the annunciator was a fuse failure. The cause of the fuse failure is unknown at this time and is under investigation. Concurrent with the HPCI fuse failure was a similar fuse failure within the Division 2 EDG [(emergency diesel generators)] Load Sequencer which renders the Division 2 EDGs inoperable. Relation to the HPCI issue is unknown and is part of the investigation.
"The RCIC [(Reactor Core Isolation Cooling System)] was verified operable per Tech Spec 3.5.1 E.1. In addition, offsite circuits were verified operable per Tech Spec 3.8.1.B. Division 1 EDGs remain operable.
"This report is being made pursuant to 10CFR50.72(b)(3)(v)(D) based on an unplanned HPCI inoperability.
"There was no impact on the health and safety of the public or plant personnel.
"The Senior NRC Resident Inspector has been notified."
EN Revision Text: HPCI DECLARED INOPERABLE
"At 0529 EDT on August 22, 2021, HPCI [(High Pressure Coolant Injection System)] was declared inoperable due to receiving the HPCI Inverter Circuit Failure annunciator. The cause of the annunciator was a fuse failure. The cause of the fuse failure is unknown at this time and is under investigation. Concurrent with the HPCI fuse failure was a similar fuse failure within the Division 2 EDG [(emergency diesel generators)] Load Sequencer which renders the Division 2 EDGs inoperable. Relation to the HPCI issue is unknown and is part of the investigation.
"The RCIC [(Reactor Core Isolation Cooling System)] was verified operable per Tech Spec 3.5.1 E.1. In addition, offsite circuits were verified operable per Tech Spec 3.8.1.B. Division 1 EDGs remain operable.
"This report is being made pursuant to 10CFR50.72(b)(3)(v)(D) based on an unplanned HPCI inoperability.
"There was no impact on the health and safety of the public or plant personnel.
"The Senior NRC Resident Inspector has been notified."