Event Notification Report for August 12, 2017
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/11/2017 - 08/12/2017
Power Reactor
Event Number: 52913
Facility: COLUMBIA GENERATING STATION
Region: 4 State: WA
Unit: [2] [] []
RX Type: [2] GE-5
NRC Notified By: DON GREGOIRE
HQ OPS Officer: MARK ABRAMOVITZ
Region: 4 State: WA
Unit: [2] [] []
RX Type: [2] GE-5
NRC Notified By: DON GREGOIRE
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 08/17/2017
Notification Time: 17:55 [ET]
Event Date: 08/12/2017
Event Time: 00:00 [PDT]
Last Update Date: 08/17/2017
Notification Time: 17:55 [ET]
Event Date: 08/12/2017
Event Time: 00:00 [PDT]
Last Update Date: 08/17/2017
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):
THOMAS FARNHOLTZ (R4DO)
PART 21/50.55 REACTO (EMAI)
THOMAS FARNHOLTZ (R4DO)
PART 21/50.55 REACTO (EMAI)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
PART 21 REPORT - RELAY MOUNTING PLATE MOUNTED UPSIDE DOWN
"Pursuant to 10 CFR 21, this is a non-emergency notification by Energy Northwest concerning a defect in General Electric (GE) Nuclear HMA124A2 relays received at Columbia Generation Station.
"On August 12, 2017, Energy Northwest completed a 10 CFR 21 evaluation of a condition associated with GE Nuclear HMA124A2 relays supplied by GE Hitachi Nuclear Energy Americas, LLC, and intended for use at Columbia Generating Station. The evaluation was performed to determine the applications where the relays were approved for installation, and where they were installed in the plant, and to determine if the failure of the relays could result in a Substantial Safety Hazard as defined In 10 CFR 21.3.
"Two of the HMA124A2 relays received had back plates that were mounted upside down, causing the terminals to not match the standard configuration. Although the internal wiring to the physical stud locations was correct, the numbering scheme embossed on the back plate did not match the correct configuration. With the incorrectly mounted back plate, the internal coil of the energizing circuit could be wired to the incorrect portion of the control circuitry, which would not energize when required and could result in the failure of a safety function. This deviation presents a Substantial Safety Hazard as defined In 10 CFR 21.3, as these relays were approved for use in safety related applications; however, there was no actual risk to plant safety since this deviation was recognized and resolved by station craft prior to installation of the relays. This condition is reportable under 10 CFR 21.21(d)(1) as a defect as defined in 10 CFR 21.3.
"The defective HMA124A2 relays were installed in the plant in the correct configuration with post-maintenance testing performed to ensure operability of the relays. The remaining HMA124A2 relays were examined and no additional defects were identified. GE Hitachi has been notified of the condition."
The licensee will notify the NRC Resident Inspector.
"Pursuant to 10 CFR 21, this is a non-emergency notification by Energy Northwest concerning a defect in General Electric (GE) Nuclear HMA124A2 relays received at Columbia Generation Station.
"On August 12, 2017, Energy Northwest completed a 10 CFR 21 evaluation of a condition associated with GE Nuclear HMA124A2 relays supplied by GE Hitachi Nuclear Energy Americas, LLC, and intended for use at Columbia Generating Station. The evaluation was performed to determine the applications where the relays were approved for installation, and where they were installed in the plant, and to determine if the failure of the relays could result in a Substantial Safety Hazard as defined In 10 CFR 21.3.
"Two of the HMA124A2 relays received had back plates that were mounted upside down, causing the terminals to not match the standard configuration. Although the internal wiring to the physical stud locations was correct, the numbering scheme embossed on the back plate did not match the correct configuration. With the incorrectly mounted back plate, the internal coil of the energizing circuit could be wired to the incorrect portion of the control circuitry, which would not energize when required and could result in the failure of a safety function. This deviation presents a Substantial Safety Hazard as defined In 10 CFR 21.3, as these relays were approved for use in safety related applications; however, there was no actual risk to plant safety since this deviation was recognized and resolved by station craft prior to installation of the relays. This condition is reportable under 10 CFR 21.21(d)(1) as a defect as defined in 10 CFR 21.3.
"The defective HMA124A2 relays were installed in the plant in the correct configuration with post-maintenance testing performed to ensure operability of the relays. The remaining HMA124A2 relays were examined and no additional defects were identified. GE Hitachi has been notified of the condition."
The licensee will notify the NRC Resident Inspector.
Non-Agreement State
Event Number: 53582
Rep Org: TILDEN MINING COMPANY L.C.
Licensee: TILDEN MINING COMPANY L.C.
Region: 3
City: ISHPEMING State: MI
County:
License #: 21-26748-01
Agreement: N
Docket:
NRC Notified By: LAWRENCE GRAY
HQ OPS Officer: ANDREW WAUGH
Licensee: TILDEN MINING COMPANY L.C.
Region: 3
City: ISHPEMING State: MI
County:
License #: 21-26748-01
Agreement: N
Docket:
NRC Notified By: LAWRENCE GRAY
HQ OPS Officer: ANDREW WAUGH
Notification Date: 09/06/2018
Notification Time: 12:45 [ET]
Event Date: 08/12/2017
Event Time: 00:00 [EDT]
Last Update Date: 09/14/2018
Notification Time: 12:45 [ET]
Event Date: 08/12/2017
Event Time: 00:00 [EDT]
Last Update Date: 09/14/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
30.50(b)(2) - SAFETY EQUIPMENT FAILURE
10 CFR Section:
30.50(b)(2) - SAFETY EQUIPMENT FAILURE
Person (Organization):
ROBERT DALEY (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ROBERT DALEY (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
GAUGE STUCK SHUTTER
On August 12, 2017, the Tilden Mining Company experienced a stuck open shutter on a gauge in the Tilden Unit 1 Cooler Chunk Tunnel. The licensee determined that the shutter lever was jammed with debris preventing the shutter from closing. The gauge was repaired on August 15, 2017. The Ronan RLL 1 source contains 0.9 milliCurie of Cesium-137 (serial number 317287A).
There were no overexposures as a result of this event.
* * * UPDATE FROM LAWRENCE GRAY TO HOWIE CROUCH AT 1151 EDT ON 9/14/18 * * *
The licensee reported that the gauge was not repaired on August 15, 2017 as previously reported but was repaired on September 13, 2017.
Notified R3DO (Hanna) and NMSS Events Notification (email).
On August 12, 2017, the Tilden Mining Company experienced a stuck open shutter on a gauge in the Tilden Unit 1 Cooler Chunk Tunnel. The licensee determined that the shutter lever was jammed with debris preventing the shutter from closing. The gauge was repaired on August 15, 2017. The Ronan RLL 1 source contains 0.9 milliCurie of Cesium-137 (serial number 317287A).
There were no overexposures as a result of this event.
* * * UPDATE FROM LAWRENCE GRAY TO HOWIE CROUCH AT 1151 EDT ON 9/14/18 * * *
The licensee reported that the gauge was not repaired on August 15, 2017 as previously reported but was repaired on September 13, 2017.
Notified R3DO (Hanna) and NMSS Events Notification (email).