Event Notification Report for June 10, 2012
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
06/09/2012 - 06/10/2012
EVENT NUMBERS
48009
Power Reactor
Event Number: 48009
Facility: DRESDEN
Region: 3 State: IL
Unit: [] [] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: DAVID CARRICK
HQ OPS Officer: DONG HWA PARK
Region: 3 State: IL
Unit: [] [] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: DAVID CARRICK
HQ OPS Officer: DONG HWA PARK
Notification Date: 06/10/2012
Notification Time: 10:00 [ET]
Event Date: 06/10/2012
Event Time: 03:00 [CDT]
Last Update Date: 06/10/2012
Notification Time: 10:00 [ET]
Event Date: 06/10/2012
Event Time: 03:00 [CDT]
Last Update Date: 06/10/2012
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):
DAVE PASSEHL (R3DO)
DAVE PASSEHL (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
HPCI DECLARED INOPERABLE DUE TO LEAKAGE
"On Sunday June 10, 2012 at 0112 (Central Time), a through-wall leak was discovered on a piping elbow upstream of the High Pressure Coolant Injection (HPCI) Inlet Drain Pot Inboard Drain valve to the Main Condenser, AOV 3-2301-29. This piping elbow is safety-related, ASME Code Class 2 piping. Dresden Technical Requirements Manual 3.4.a, Condition B requires the leak to be isolated which renders the HPCI system inoperable. The Unit 3 HPCI system was isolated and declared inoperable at 0300 (Central Time), and Technical Specification 3.5.1 Condition G has been entered. The HPCI system is a single train system.
"The event is being reported pursuant to 10 CFR 50.72(b)(3)(v)(D), any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.
"The licensee notified the NRC Resident Inspector."
"On Sunday June 10, 2012 at 0112 (Central Time), a through-wall leak was discovered on a piping elbow upstream of the High Pressure Coolant Injection (HPCI) Inlet Drain Pot Inboard Drain valve to the Main Condenser, AOV 3-2301-29. This piping elbow is safety-related, ASME Code Class 2 piping. Dresden Technical Requirements Manual 3.4.a, Condition B requires the leak to be isolated which renders the HPCI system inoperable. The Unit 3 HPCI system was isolated and declared inoperable at 0300 (Central Time), and Technical Specification 3.5.1 Condition G has been entered. The HPCI system is a single train system.
"The event is being reported pursuant to 10 CFR 50.72(b)(3)(v)(D), any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.
"The licensee notified the NRC Resident Inspector."