05000352/LER-2006-002, Re SRV Position Indication on the Remote Shutdown Panel Inoperable
| ML061450135 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 05/18/2006 |
| From: | Degregorio R Exelon Nuclear |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 06-002-00 | |
| Download: ML061450135 (4) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)() 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(x)(A) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(v), Loss of Safety Function |
| 3522006002R00 - NRC Website | |
text
LaExelomn Exelon Nuclear www.exeloncorp.com Nucer Limerick Generating Station NudeaT P.O. Box 2300 Pottstown, PA 19464 10 CFR50.73 May 18, 2006 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 LiftericklGenefting Station, Unit 1 Facility Operating License No. NPF-39 NRC Docket No. 50-352 Subject: LER 1-06-002, SRV Position Indication on Remote Shutdown Panel This Licensee Event Report (LER) addresses three Safety Relief Valve (SRV) position lights on the Remote Shutdown Panel which failed after a brief period of operation during a refueling surveillance test. This condition was prohibited by Technical Specifications (TS) 3.3.7.4 when at power Modes 1 and 2.
Report Number:
1-06-002 Revision:
00 Event Date:
March 19, 2006 Discovered Date:
March 19, 2006 Report Date:
May 18, 2006 This LER is being submitted pursuant to the requirements of 1 OCFR50.73(a)(2)(i)(B).
There are no commitments contained in this letter.
If you have any questions or require additional information, please do not hesitate to contact us.
Sincerely, RoGre 75 Vice Preside Exelon Generation Company, LLC Attachment LER 1-06-002 cc: S. Collins, Administrator Region I, USNRC S. Hansell, USNRC Senior Resident Inspector, LGS
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 06/30/2007 (6-2004)Estimated
, the NRC may sfor each block) not conduct or sponsor, and a person is not required to respond to, the
- 3. PAGE Limerick Generating Station Unit 1 05000 352 OF 3
- 4. TTLE SRV Position Indication on the Remote Shutdown Panel Inoperable
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED MNHlDYlYA YERlSEQOUUENTIAL lREV MNHlDY lYA FACILITY NAME DOCKET NUMBER 7
FACILITY NAME DOCKET NUMBER 03 19 2006 2006 -002 00 05 18 2006 05000
- 9. OPERATING MODE
- 11. THIS REPOAT IS SUBMITrD PURSUANT TO THE REQUIREMENTS OF 10 CFR§: (Check al that apply) o-20.2201(b) 0 20.2203(a)(3)(i) 0 50.73(a)(2)()C)
D 50.73(a)(2)(vil) 5 0 20.2201(d) 0 20.2203(a)(3)(ii)
'0 50.73(a)(2)(ii)(A) 0 50.73(a)(2)(viii)(A) o3 20.2203(a)(1)
[3 20.2203(a)(4)
El 50.73(a)(2)(ii)(B) 0 50.73(a)(2)(viii)(B) 0 20.2203(a)(2)(i)
'50.36(c)(1)(i)(A)
E 50.73(a)(2)(iii)
E 50.73(a)(2)(x)(A)
- 10. POWER LEVEL 0 20.2203(a)(2)(ii) 0 50.36(c)(1)(ii)(A)
ED 50.73(a)(2)(Qv)(A)
O 50.73(a)(2)(x) o 20.2203(a)(2)(iii) 0l 50.36(c)(2) 0 50.73(a)(2)(v)(A) 0 73.71(a)(4)
O 20.2203(a)(2)(iv)
El 50.46(a)(3)(ii) 0 50.73(a)(2)(v)(B) 0 73.71 (a)(5) 0 0 20.2203(a)(2)(v) 0 50.73(a)(2)(i)(A)
U 50.73(a)(2)(v)(C)
El OTHER 0 20.2203(a)(2)(vI) 0 50.73(a)(2)(i)(B)
El 50.73(a)(2)(v)(D)
Specify In Abstract below
.or In (If more space is required, use additional copies of NRC Form 366A) (17)
The extent of condition is limited to Unit 1. Field Deviation Disposition Request (FDDR) HH24733 added a Metal Oxide Varister (MOV) to the Unit 2 wiring during construction.
Corrective Action Completed An-AOV was added tothe-Uniti circuit similar to-whatwasAdoneior-Unit 2 and the SRVs were tested satisfactorily.
Previous Similar Occurrences There were no previous similar occurrences where the SRV lights failed to relight following operation from the Remote Shutdown Panel.
Component data:
Cause
B (Design, Manufacturing, Construction/Installation)
System:
JL Panels System Component:
HS Switch Hand Manufacturer:
G080 General Electric Model:
N/A Reportable to EPIX:
Yes