Event Notification Report for June 16, 2008
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
06/15/2008 - 06/16/2008
EVENT NUMBERS
44312
Power Reactor
Event Number: 44312
Facility: OCONEE
Region: 2 State: SC
Unit: [1] [2] [3]
RX Type: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP
NRC Notified By: BOB MEIXELL
HQ OPS Officer: MARK ABRAMOVITZ
Region: 2 State: SC
Unit: [1] [2] [3]
RX Type: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP
NRC Notified By: BOB MEIXELL
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 06/23/2008
Notification Time: 11:01 [ET]
Event Date: 06/16/2008
Event Time: 14:13 [EDT]
Last Update Date: 06/23/2008
Notification Time: 11:01 [ET]
Event Date: 06/16/2008
Event Time: 14:13 [EDT]
Last Update Date: 06/23/2008
Emergency Class: NON EMERGENCY
10 CFR Section:
21.21 - UNSPECIFIED PARAGRAPH
10 CFR Section:
21.21 - UNSPECIFIED PARAGRAPH
Person (Organization):
BINOY DESAI (R2)
PART 21 GROUP
BINOY DESAI (R2)
PART 21 GROUP
| 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 |
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
REPLACEMENT BREAKER CHARGING MOTORS FAILED MINIMUM VOLTAGE TEST
"Event: On June 16, 2008, Duke Energy (Duke) completed a reportability determination which concluded that a defect associated with 10 electric charging motors for breakers is reportable under Part 21. This is a legacy issue from May 22, 2000, which was re-evaluated as a result of an assessment of Oconee's Part 21 processes. The motors were procured as safety-related from Asea Brown Boveri (ABB) (Florence, SC location) on February 22, 2000, ABB Part# 709799T11. The motors were received on March 9, 2000 and subsequently, breaker personnel identified the part number on the replacement motors did not agree with the existing motors. When installed in a breaker for testing, the replacement motors did not function at the required minimum 90VDC. Duke will provide follow up written notification within 30 days pursuant to Part 21.21(d)(3)(ii).
"Initial Safety Significance: None. The motors were never placed in service. However, the evaluation concluded because of the safely related applications for which the motors were intended, the defect could have resulted in a significant safety hazard had the motor(s) been placed in service."
The licensee verified that this part was not used at other Duke nuclear plants.
The licensee notified the NRC Resident Inspector and the ABB Project Manager for Oconee.
"Event: On June 16, 2008, Duke Energy (Duke) completed a reportability determination which concluded that a defect associated with 10 electric charging motors for breakers is reportable under Part 21. This is a legacy issue from May 22, 2000, which was re-evaluated as a result of an assessment of Oconee's Part 21 processes. The motors were procured as safety-related from Asea Brown Boveri (ABB) (Florence, SC location) on February 22, 2000, ABB Part# 709799T11. The motors were received on March 9, 2000 and subsequently, breaker personnel identified the part number on the replacement motors did not agree with the existing motors. When installed in a breaker for testing, the replacement motors did not function at the required minimum 90VDC. Duke will provide follow up written notification within 30 days pursuant to Part 21.21(d)(3)(ii).
"Initial Safety Significance: None. The motors were never placed in service. However, the evaluation concluded because of the safely related applications for which the motors were intended, the defect could have resulted in a significant safety hazard had the motor(s) been placed in service."
The licensee verified that this part was not used at other Duke nuclear plants.
The licensee notified the NRC Resident Inspector and the ABB Project Manager for Oconee.