Event Notification Report for June 07, 2012
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
06/06/2012 - 06/07/2012
Power Reactor
Event Number: 48007
Facility: SUMMER CONSTRUCTION
Region: 0 State: SC
Unit: [2] [3] []
RX Type:
NRC Notified By: APRIL RICE
HQ OPS Officer: DONALD NORWOOD
Region: 0 State: SC
Unit: [2] [3] []
RX Type:
NRC Notified By: APRIL RICE
HQ OPS Officer: DONALD NORWOOD
Notification Date: 06/08/2012
Notification Time: 13:43 [ET]
Event Date: 06/07/2012
Event Time: 19:44 [EDT]
Last Update Date: 06/08/2012
Notification Time: 13:43 [ET]
Event Date: 06/07/2012
Event Time: 19:44 [EDT]
Last Update Date: 06/08/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
26.719 - FITNESS FOR DUTY
10 CFR Section:
26.719 - FITNESS FOR DUTY
Person (Organization):
MALCOLM WIDMANN (R2DO)
MALCOLM WIDMANN (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | 0 | ||
| 3 | N | N | 0 | 0 |
VIOLATION OF THE FITNESS FOR DUTY PROGRAM
A non-licensed, contract employee supervisor had a confirmed positive for alcohol during a "for cause" fitness-for-duty test. The individual's site access was revoked, and he was removed from the site. Contact the Headquarters Operations Officer for additional details.
A non-licensed, contract employee supervisor had a confirmed positive for alcohol during a "for cause" fitness-for-duty test. The individual's site access was revoked, and he was removed from the site. Contact the Headquarters Operations Officer for additional details.
Power Reactor
Event Number: 48001
Facility: LIMERICK
Region: 1 State: PA
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: MARK ARNOSKY
HQ OPS Officer: DONG HWA PARK
Region: 1 State: PA
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: MARK ARNOSKY
HQ OPS Officer: DONG HWA PARK
Notification Date: 06/07/2012
Notification Time: 09:47 [ET]
Event Date: 06/07/2012
Event Time: 09:47 [EDT]
Last Update Date: 06/07/2012
Notification Time: 09:47 [ET]
Event Date: 06/07/2012
Event Time: 09:47 [EDT]
Last Update Date: 06/07/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
CHRISTOPHER CAHILL (R1DO)
CHRISTOPHER CAHILL (R1DO)
| 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 |
TECHNICAL SUPPORT CENTER VENTILATION SYSTEM MAINTENANCE
"This ENS is being issued in advance of a planned activity. Today, 6/7/12, the (TSC) Technical Support Center Emergency Ventilation system will be removed from service to support preventive maintenance activities. The emergency ventilation system will not be available and cannot be restored within the time period required to staff and activate the Emergency Response Organization (ERO). The work will complete today, 6/7/12.
"If an emergency is declared and TSC ERO activation is required, the TSC will be staffed and activated unless the TSC becomes uninhabitable due to ambient temperatures, radiological or other conditions. If relocation of the TSC staff becomes necessary, the Station Emergency Director will relocate the staff to an alternate TSC location."
The licensee has notified the NRC Resident Inspector.
"This ENS is being issued in advance of a planned activity. Today, 6/7/12, the (TSC) Technical Support Center Emergency Ventilation system will be removed from service to support preventive maintenance activities. The emergency ventilation system will not be available and cannot be restored within the time period required to staff and activate the Emergency Response Organization (ERO). The work will complete today, 6/7/12.
"If an emergency is declared and TSC ERO activation is required, the TSC will be staffed and activated unless the TSC becomes uninhabitable due to ambient temperatures, radiological or other conditions. If relocation of the TSC staff becomes necessary, the Station Emergency Director will relocate the staff to an alternate TSC location."
The licensee has notified the NRC Resident Inspector.
Power Reactor
Event Number: 48002
Facility: DIABLO CANYON
Region: 4 State: CA
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: MICHAEL QUITTER
HQ OPS Officer: DONALD NORWOOD
Region: 4 State: CA
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: MICHAEL QUITTER
HQ OPS Officer: DONALD NORWOOD
Notification Date: 06/07/2012
Notification Time: 11:56 [ET]
Event Date: 06/07/2012
Event Time: 01:29 [PDT]
Last Update Date: 06/07/2012
Notification Time: 11:56 [ET]
Event Date: 06/07/2012
Event Time: 01:29 [PDT]
Last Update Date: 06/07/2012
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):
HEATHER GEPFORD (R4DO)
HEATHER GEPFORD (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown |
BOTH TRAINS OF LOW TEMPERATURE OVERPRESSURE SYSTEM INOPERABLE
"On June 7, 2012, at 0129 PDT, both trains of the low temperature overpressure (LTOP) system were rendered inoperable when the vital 120 VAC panel PY-13 was de-energized due to a human performance error. DCPP Unit 1 was in Mode 5, reactor coolant system loops not filled. Technicians were troubleshooting an existing de-energized vital 120 VAC panel PY-14 that had resulted from the supply breaker tripping open. The technician incorrectly opened the supply breaker to panel PY-13 instead of PY-14. With PY-14 de-energized, one train of LTOP was inoperable due to loss of signal from Reactor Coolant System (RCS) wide range pressure transmitter PT-405A. With PY-13 de-energized, the second train of LTOP was rendered inoperable due to loss of signal from RCS wide range pressure transmitter PT-403A. Operations immediately recognized the error and had the technician reclose the PY-13 supply breaker, thereby re-energizing panel PY-13, returning one train of LTOP back to its operable condition.
"Plant personnel notified the NRC Resident Inspector."
"On June 7, 2012, at 0129 PDT, both trains of the low temperature overpressure (LTOP) system were rendered inoperable when the vital 120 VAC panel PY-13 was de-energized due to a human performance error. DCPP Unit 1 was in Mode 5, reactor coolant system loops not filled. Technicians were troubleshooting an existing de-energized vital 120 VAC panel PY-14 that had resulted from the supply breaker tripping open. The technician incorrectly opened the supply breaker to panel PY-13 instead of PY-14. With PY-14 de-energized, one train of LTOP was inoperable due to loss of signal from Reactor Coolant System (RCS) wide range pressure transmitter PT-405A. With PY-13 de-energized, the second train of LTOP was rendered inoperable due to loss of signal from RCS wide range pressure transmitter PT-403A. Operations immediately recognized the error and had the technician reclose the PY-13 supply breaker, thereby re-energizing panel PY-13, returning one train of LTOP back to its operable condition.
"Plant personnel notified the NRC Resident Inspector."