Event Notification Report for May 09, 2016
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/08/2016 - 05/09/2016
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Agreement State
Event Number: 51916
Rep Org: TEXAS DEPT OF STATE HEALTH SERVICES
Licensee: ALCOA WORLD ALUMINA ATLANTIC
Region: 4
City: POINT COMFORT State: TX
County:
License #: 05186
Agreement: Y
Docket:
NRC Notified By: IRENE CASARES
HQ OPS Officer: DONALD NORWOOD
Licensee: ALCOA WORLD ALUMINA ATLANTIC
Region: 4
City: POINT COMFORT State: TX
County:
License #: 05186
Agreement: Y
Docket:
NRC Notified By: IRENE CASARES
HQ OPS Officer: DONALD NORWOOD
Notification Date: 05/10/2016
Notification Time: 17:03 [ET]
Event Date: 05/09/2016
Event Time: 00:00 [CDT]
Last Update Date: 06/10/2016
Notification Time: 17:03 [ET]
Event Date: 05/09/2016
Event Time: 00:00 [CDT]
Last Update Date: 06/10/2016
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
VIVIAN CAMPBELL (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)
VIVIAN CAMPBELL (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)
AGREEMENT STATE REPORT - FIXED NUCLEAR GAUGE STUCK SHUTTER
The following information was received via E-mail:
"On May 10, 2016, the Agency [Texas Depart of State Health Services] received notification from the licensee's radiation safety officer (RSO) that the shutter on a Thermo Fisher Scientific Model 5176-SN B2578 density gauge, containing a 500 millicurie cesium-137 source SN MA3200, was found open during inventory/operational checks. It appears the weld had failed on the gauge. Open is the normal operating position of the gauge shutter. The gauge does not create an exposure hazard to the licensee's employees or a member of the general public. The licensee has contacted the service company who will inspect the gauge. Additional information will be provided as it is received in accordance with SA-300."
Texas Incident #: I-9399
* * * RETRACTION FROM CHRIS MOORE TO RICHARD SMITH ON JUNE 10, 2016 AT 1541 EDT * * *
The following was received from the State of Texas via email:
"I-9399, EN51916 is retracted. The manufacturer inspected the gauge and shutter. All components were fully operational. The transmitter in the density detector failed, giving an erroneous reading on the meter. The licensee incorrectly assumed it was due to a broken shutter."
Notified R4DO(Kramer) and NMSS Events Notification via email.
The following information was received via E-mail:
"On May 10, 2016, the Agency [Texas Depart of State Health Services] received notification from the licensee's radiation safety officer (RSO) that the shutter on a Thermo Fisher Scientific Model 5176-SN B2578 density gauge, containing a 500 millicurie cesium-137 source SN MA3200, was found open during inventory/operational checks. It appears the weld had failed on the gauge. Open is the normal operating position of the gauge shutter. The gauge does not create an exposure hazard to the licensee's employees or a member of the general public. The licensee has contacted the service company who will inspect the gauge. Additional information will be provided as it is received in accordance with SA-300."
Texas Incident #: I-9399
* * * RETRACTION FROM CHRIS MOORE TO RICHARD SMITH ON JUNE 10, 2016 AT 1541 EDT * * *
The following was received from the State of Texas via email:
"I-9399, EN51916 is retracted. The manufacturer inspected the gauge and shutter. All components were fully operational. The transmitter in the density detector failed, giving an erroneous reading on the meter. The licensee incorrectly assumed it was due to a broken shutter."
Notified R4DO(Kramer) and NMSS Events Notification via email.
Power Reactor
Event Number: 52051
Facility: BRUNSWICK
Region: 2 State: NC
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: STEPHEN W. REED
HQ OPS Officer: STEVE SANDIN
Region: 2 State: NC
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: STEPHEN W. REED
HQ OPS Officer: STEVE SANDIN
Notification Date: 06/29/2016
Notification Time: 12:30 [ET]
Event Date: 05/09/2016
Event Time: 06:26 [EDT]
Last Update Date: 06/29/2016
Notification Time: 12:30 [ET]
Event Date: 05/09/2016
Event Time: 06:26 [EDT]
Last Update Date: 06/29/2016
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
OMAR LOPEZ (R2DO)
OMAR LOPEZ (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
INVALID ACTUATION OF PRIMARY CONTAINMENT ISOLATION VALVES (PCIVs)
"This 60-day telephone notification is being made in lieu of a Licensee Event Report (LER) submittal in accordance with 10 CFR 50.73(a)(1) to notify the NRC of an invalid actuation of PCIVs, reportable under 10 CFR 50.73(a)(2)(iv)(A).
"On May 9, 2016, at 0626 Eastern Daylight Time (EDT), an unexpected trip of the Unit 1 Reactor Protection System (RPS) Bus A occurred, resulting in closure of several PCIVs on loss of power, per design. In addition, the following actuations also occurred per design:
- insertion of a half reactor scram signal.
- initiation of the standby gas treatment (SBGT) system .
- isolation of the secondary containment.
- initiation of the control room emergency ventilation (CREV) system smoke and radiation mode.
- trip of the operating reactor water cleanup system (RWCU) pump due to closure of its isolation valve.
"The event resulted from a failed relay coil in the drive motor run logic for the RPS power supply motor-generator (MG) set. The failed relay blew a fuse, which de-energized the RPS drive motor contactor and MG set. This resulted in de-energizing the RPS power supply in the 'A' channel and produced the actuations listed previously, per design. Affected systems and components were restored to their normal configurations by 1000 EDT on May 9, 2016.
"Since no plant or process conditions existed that required the PCIV isolations (e.g., high drywell pressure or low reactor water level), this event is being reported per 10 CFR 50.73(a)(1) as an invalid actuation. This issue has been entered into the site Corrective Action Program (CR 2027653) for evaluation and implementation of further corrective actions.
This event did not result in any adverse impact to the health and safety of the public.
"The NRC Resident Inspector has been notified."
"This 60-day telephone notification is being made in lieu of a Licensee Event Report (LER) submittal in accordance with 10 CFR 50.73(a)(1) to notify the NRC of an invalid actuation of PCIVs, reportable under 10 CFR 50.73(a)(2)(iv)(A).
"On May 9, 2016, at 0626 Eastern Daylight Time (EDT), an unexpected trip of the Unit 1 Reactor Protection System (RPS) Bus A occurred, resulting in closure of several PCIVs on loss of power, per design. In addition, the following actuations also occurred per design:
- insertion of a half reactor scram signal.
- initiation of the standby gas treatment (SBGT) system .
- isolation of the secondary containment.
- initiation of the control room emergency ventilation (CREV) system smoke and radiation mode.
- trip of the operating reactor water cleanup system (RWCU) pump due to closure of its isolation valve.
"The event resulted from a failed relay coil in the drive motor run logic for the RPS power supply motor-generator (MG) set. The failed relay blew a fuse, which de-energized the RPS drive motor contactor and MG set. This resulted in de-energizing the RPS power supply in the 'A' channel and produced the actuations listed previously, per design. Affected systems and components were restored to their normal configurations by 1000 EDT on May 9, 2016.
"Since no plant or process conditions existed that required the PCIV isolations (e.g., high drywell pressure or low reactor water level), this event is being reported per 10 CFR 50.73(a)(1) as an invalid actuation. This issue has been entered into the site Corrective Action Program (CR 2027653) for evaluation and implementation of further corrective actions.
This event did not result in any adverse impact to the health and safety of the public.
"The NRC Resident Inspector has been notified."