ML081760330
| ML081760330 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 06/23/2008 |
| From: | Meixell B Duke Energy Carolinas |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| 44312 | |
| Download: ML081760330 (4) | |
Text
1' 06/23/2008 U.S. Nuclear Regulatory Commission Operations Center Event Report Paffe I Power Reactor Event#
44312 Site: OCONEE Notification Date / Time: 06/23/2008 11:01 (EDT)
Unit: 1 2
3 Region: 2 State : SC Event Date / Time: 06/16/2008 14:13 (EDT)
Reactor Type: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP Last Modification: 06/23/2008 Containment Type: DRY AMB DRY AMB DRY AMB NRC Notified by: BOB MEIXELL Notifications: BINOY DESAI R2 HQ Ops Officer: MARK ABRAMOVITZ PART 21 GROUP Emergency Class: NON EMERGENCY 10 CFR Section:
21.21 UNSPECIFIED PARAGRAPH Unit Scram Code RX Crit [nit Power Initial RX Mode Curr Power Current RX Mode 1
N Yes 100 Power Operation 100 Power Operation 2
N Yes 100 Power Operation 100 Power Operation 3
N Yes 1 100 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 fromn Asea Brown Boveri (ABB) (Florence, SC location) on February 22, 2000, ABB Part# 709799T1 1. 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.
06/23/08 10:59 FAX 2869 UNIT I & 2 CONTROL ROOM -ý NRC ZOOl Attachment B NRC Event Notification Worksheet OMP 1-14 Page 1 of 3 NRC Event Notification Worksheet Notification Time Facility or Organization Unit Caller's Name Call Back #
Oconee Nuclear Station 1, 2, 3 Bob Meixell ENS 256-9931 (864) 885-3279 NRC Operations Officer Contacted:
NRC Event Number:
Event Time/Zone 0
Event Date0 Power/ModeBefore I
Power/Mode After 1413 EDT 061/20 N/
N/A I
I Event Classifications I
LI El El El El El El El El General Emergency Site Area Emergency Alert Unusual Event.
50.72 Non-emergency (see other columns) 72.75 Spent Fuel (ISFSI) 73.7 r Physical Security Transportation 20.2202 Matorial/Exposure 26.73 Fitness for Duty Other: Part 21.211(d)(3)(i) 8-Hour Non-Emergency 10 CFR 50.72 (b) (3)
EI (ii) (A) Degraded Condition El (ii) (B) Unanalyzed Condition El (xiii) Loss of emergency assessment capability/offsite communications El (iv) (A) System Actuation F-RPS
[-
Containment isolation El ECCS El EFW F] Containment spray/coolers El Emergency AC (Keowee Hydro)
E] (v) (A) Safe Shutdown Capability El (v) (B) Residual Heat Removal Capability
[] (v) (C) Control of radiological material I-Hour Non-emergency 10 CFR 50.72 (b)(1)i El Deviation from TS per 50.54(x) 4-Hour Non-Emergency 10 CFR 50.72 (b)(2)
El (i) TS Required Shutdown
[I (iv) (A) ECCS Discharge into RCS E] (iv) (B) RPS Actuation (while critical)
El (xi) News release/notification to other government agencies El El (v) (D) Accident Mitigation (xii) Transport contaminated person to offsite medical facility
06/23/08 11:00 FAX 2869 UNIT I & 2 CONTROL ROOM 4 NRC M 002 Attachment B OMP 1-14 Page 2 of 3 NRC Event Notification Worksheet Event Description (Include svstetis affectcd, actuations and their initiating signals, causes, effec of event on plant, actions taken or planned, etc.)
Event: On June 16, 2008, Duke Energy (Duke) completed a reportabilil defect associated with 10 electric charging motors for breakers is repon from May 22, 2000, which was re-evaluated as a result of an assessmern The motors were procured as safety-related from Asea Brown Boveri ()
22, 2000, ABB Part# 709799T1 1. The motors were received on March identified the part number on the replacement motors did not agree witl breaker for testing,, the replacement motors did not function at the reqtý follow up written notification within 30 days pursuant to Part 21.21(d)(
y determination which concluded that a table under Part 21. This is a legacy issue t of Oconee's Part 21 processes..
ýBB) (Florence, SC location) on February 9, 2000 and subsequently, breaker personnel i the existing motors. When installed in a ired minimum 90VDC. Duke will provide 3)(ii).
Initial Safety Significance: None. The motors were never placed in se vice. However, the evaluation concluded because of the safety related applications for which the motors were in ended, the defect could have resulted in a significant safety hazard had the motor(s) been placed in service.
Corrective Action(s): The 10 motors were returned to ABB Florence n 2000 for evaluation.
IAnything unusual or not understood?
I Yes (Explain bove)
No Did all systems function as required?
[
Yes I
No (Explain above)
Mode of operations until corrected: N/A JEstimated rest irt date: N/A Does event result in a radiological release, RCS leak, or steam generat r tube E Yes (complete page 3)1 No0 leak?
Does the event result in any of the units experiencing a
[
Yes (c plete Oconee Plant Status sheet)
No
[transient?
Ys(
peeOoe ln ttsset Notifications NRC Resident: 4 fNwil Ibe Plant Mabager:f. d*&
5N/will be Notified By: A'
'Time:oiid re State(s):
Yj ill be rPeratos Superintendent:
Y/Ný l
Notified By:
Time:
Noiie y:
T ime:
Local:
Y¥ will be Other Goernment Agencies:
Y wivill be Notified By:
Time:
- Notified y:
Time:
Media/Press Release:
.Y will be iOther:
YA)ill be Notified By:
Time jNotified y
Time I
Operations Shift Manager/Emergency Coordinator Appro at:
Date/Timp:
NRC Notification Cornplete by Caller/NRC Coinmunicat r':
IDate/Time:
06/23/08 11:01 FAX 2869 UNIT 1 & 2 CONTROL ROOM 4 NRC 2 003 Attachment B NRC Event Notification Workshect OMP 1-14 Page'3 of 3 Additional Information for Radiological Releases Radiological Release (check as applicable with soecific details in event description including release path)
El Liquid Release "
Gaseous Release
.]
Unplanned Release E. Planned Release Fl Monitored E] Unmonitored Off-Site Release Li TS Exceeded El Personnel Exposed El Rad Mon Alarms Off-Site Protected Actions El Terminated or Contaminated Recommended E] Areas Evacuated El Ongoing Release Rate % TS Limit HOO Guide Total Activity % TS Limit Hoe Guide (Ci/sec)
(Ci)
Noble gas:
0.1 Ci/sec 1000 Ci Iodine:
10 pLCi/sec 0.01 Ci Particulate:
I pCi/sec 1 mCi Liquid (excluding tritium and 10 pLCi/min 0.1 Ci dissolved noble gases):
Liquid (tritium):
0.2 Ci/min 5 Ci Total Activity:_
Plant Stack Condenser/Air Main Steam SG Blowdown Other
__Ej ector Line Rad Monitor Readings:
Alarm Setpoints:
% TS Limit (if applicable):
Additional Information for Reactor Coolant Leaks and Steam Generator Tube Leaks Location of the leak (e.g. SG, valve, pipe, etc.)
Leak Rate:
IUnits (gpm/gpd):
TS Limit:
ISudden or Long Term Development:
Leak Start Date:
Time:
'Coolant Activity & Units:
IPrimary -
ISecondary -
List of Safety Related Equipment Not Operational: