Event Notification Report for July 23, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/22/2021 - 07/23/2021
Power Reactor
Event Number: 55377
Facility: Prairie Island
Region: 3 State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: Bryan Truckenmiller
HQ OPS Officer: Joanna Bridge
Region: 3 State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: Bryan Truckenmiller
HQ OPS Officer: Joanna Bridge
Notification Date: 07/23/2021
Notification Time: 12:06 [ET]
Event Date: 07/23/2021
Event Time: 10:40 [CDT]
Last Update Date: 07/23/2021
Notification Time: 12:06 [ET]
Event Date: 07/23/2021
Event Time: 10:40 [CDT]
Last Update Date: 07/23/2021
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):
PELKE, PATRICIA (R3)
PELKE, PATRICIA (R3)
| 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 |
EN Revision Imported Date: 8/23/2021
EN Revision Text: OFFSITE NOTIFICATION DUE TO FISH KILL
"At approximately 1040 CDT, July 23, 2021, the Minnesota State Duty Officer was notified by Xcel Energy Environmental Services of a fish kill in the Prairie Island Nuclear Generating Plant discharge canal. The fish kill resulted from a change in temperature due to the loss of power to the plant cooling tower pumps. The cause of the power loss is under investigation.
"This notification is being made as a four-hour, non-emergency notification in accordance with 10 CFR 50.72(b)(2)(xi).
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
EN Revision Text: OFFSITE NOTIFICATION DUE TO FISH KILL
"At approximately 1040 CDT, July 23, 2021, the Minnesota State Duty Officer was notified by Xcel Energy Environmental Services of a fish kill in the Prairie Island Nuclear Generating Plant discharge canal. The fish kill resulted from a change in temperature due to the loss of power to the plant cooling tower pumps. The cause of the power loss is under investigation.
"This notification is being made as a four-hour, non-emergency notification in accordance with 10 CFR 50.72(b)(2)(xi).
"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: 55463
Rep Org: TE Connectivity
Licensee: TE Connectivity
Region: 1
City: Fairview State: NC
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Lucinda Hodge
HQ OPS Officer: Brian Lin
Licensee: TE Connectivity
Region: 1
City: Fairview State: NC
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Lucinda Hodge
HQ OPS Officer: Brian Lin
Notification Date: 09/15/2021
Notification Time: 12:14 [ET]
Event Date: 07/23/2021
Event Time: 00:00 [EDT]
Last Update Date: 09/15/2021
Notification Time: 12:14 [ET]
Event Date: 07/23/2021
Event Time: 00:00 [EDT]
Last Update Date: 09/15/2021
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):
PART 21/50.55 REACTORS, - (EMAIL)
BOWER, FRED (R1DO)
MILLER, MARK (R2DO)
DICKSON, BILLY (R3DO)
AZUA, RAY (R4DO)
PART 21/50.55 REACTORS, - (EMAIL)
BOWER, FRED (R1DO)
MILLER, MARK (R2DO)
DICKSON, BILLY (R3DO)
AZUA, RAY (R4DO)
EN Revision Imported Date: 10/15/2021
EN Revision Text: PART 21 - LOOSE CONNECTION ON HI-POT TESTER FOR EGP/ETR SERIES RELAYS
The following is a summary of information received from TE Connectivity via fax:
During Management of Change review on 7/23/21, TE Connectivity discovered test load was unconnected to HI-POT tester for EGP/ETR series relays. TE's investigation found a connection remained loose after scheduled calibration testing on 12/30/2020.
This report serves to document TE's evaluation and the corrective action taken on this issue:
1. A search of TE's database finds no occurrence of Dielectric Withstand Voltage (DWV) test failure at TE facility or similar failure with our customers in the field.
2. Many nuclear customers perform thorough inspections and testing prior to installing relays.
3. No customer history of EGP/ETR complaints of DWV failures found.
4. A series of corrective actions are now in place to guarantee full DWV testing to specification including: a mistake proof HI-POT test fixture developed and installed, and Hi-Pot test setup verification included as part of testing routine.
There have been no reported field failures for the identified impacted produce. However, out of an abundance of caution TE will notify customers of the issue and the option to return any relays potentially related to this issue for retesting and recertification.
Point of Contact:
Lucinda Hodge
Quality Manager
TE Connectivity, Aerospace Defense and Marine Division
1396 Charlotte Highway
Fairview, NC 28730
EN Revision Text: PART 21 - LOOSE CONNECTION ON HI-POT TESTER FOR EGP/ETR SERIES RELAYS
The following is a summary of information received from TE Connectivity via fax:
During Management of Change review on 7/23/21, TE Connectivity discovered test load was unconnected to HI-POT tester for EGP/ETR series relays. TE's investigation found a connection remained loose after scheduled calibration testing on 12/30/2020.
This report serves to document TE's evaluation and the corrective action taken on this issue:
1. A search of TE's database finds no occurrence of Dielectric Withstand Voltage (DWV) test failure at TE facility or similar failure with our customers in the field.
2. Many nuclear customers perform thorough inspections and testing prior to installing relays.
3. No customer history of EGP/ETR complaints of DWV failures found.
4. A series of corrective actions are now in place to guarantee full DWV testing to specification including: a mistake proof HI-POT test fixture developed and installed, and Hi-Pot test setup verification included as part of testing routine.
There have been no reported field failures for the identified impacted produce. However, out of an abundance of caution TE will notify customers of the issue and the option to return any relays potentially related to this issue for retesting and recertification.
Point of Contact:
Lucinda Hodge
Quality Manager
TE Connectivity, Aerospace Defense and Marine Division
1396 Charlotte Highway
Fairview, NC 28730