Event Notification Report for July 27, 2003
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/26/2003 - 07/27/2003
EVENT NUMBERS
40104
Power Reactor
Event Number: 40104
Facility: PEACH BOTTOM
Region: 1 State: PA
Unit: [2] [] []
RX Type: [2] GE-4,[3] GE-4
NRC Notified By: DAVE FOSS
HQ OPS Officer: JOHN MacKINNON
Region: 1 State: PA
Unit: [2] [] []
RX Type: [2] GE-4,[3] GE-4
NRC Notified By: DAVE FOSS
HQ OPS Officer: JOHN MacKINNON
Notification Date: 08/26/2003
Notification Time: 13:36 [ET]
Event Date: 07/27/2003
Event Time: 18:39 [EDT]
Last Update Date: 08/26/2003
Notification Time: 13:36 [ET]
Event Date: 07/27/2003
Event Time: 18:39 [EDT]
Last Update Date: 08/26/2003
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):
JAMES TRAPP (R1)
JAMES TRAPP (R1)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 77 | Power Operation | 77 | Power Operation |
60 DAY OPTIONAL REPORT
"This 60-day optional report, as allowed by 10 CFR 50.73(a)(1), is being made under the reporting requirement in 10CFR50.73(a)(2)(iv)(A) to describe an unplanned, invalid actuation of a specified system, specifically Primary Containment Isolation Valve (PCIV) Group II and III outboard valves. The inboard valves were unaffected by this event.
"On July 27, 2003, at 1839 hours, a spurious operation of Primary Containment Isolation System (PCIS) logic relay occurred. This normally energized relay momentarily changed state resulting in an isolation of the outboard Secondary Containment Isolation Valves (SCIVs) and outboard Group 2 and 3 PCIV's. Additionally, the "B" Standby Gas Treatment (SBGT) subsystem started due to the isolation.
"The affected systems responded as expected for the given conditions. The Group II/III PCIS isolation was reset by 1842 hours. The affected systems were promptly returned to a normal configuration. No other deficiencies or abnormalities were noted during the event.
"This event has been entered into the site-specific corrective action program for resolution (CR 169219)
"The NRC resident has been informed."
"This 60-day optional report, as allowed by 10 CFR 50.73(a)(1), is being made under the reporting requirement in 10CFR50.73(a)(2)(iv)(A) to describe an unplanned, invalid actuation of a specified system, specifically Primary Containment Isolation Valve (PCIV) Group II and III outboard valves. The inboard valves were unaffected by this event.
"On July 27, 2003, at 1839 hours, a spurious operation of Primary Containment Isolation System (PCIS) logic relay occurred. This normally energized relay momentarily changed state resulting in an isolation of the outboard Secondary Containment Isolation Valves (SCIVs) and outboard Group 2 and 3 PCIV's. Additionally, the "B" Standby Gas Treatment (SBGT) subsystem started due to the isolation.
"The affected systems responded as expected for the given conditions. The Group II/III PCIS isolation was reset by 1842 hours. The affected systems were promptly returned to a normal configuration. No other deficiencies or abnormalities were noted during the event.
"This event has been entered into the site-specific corrective action program for resolution (CR 169219)
"The NRC resident has been informed."