05000348/LER-2008-004, Joseph M Farley Nuclear Plant Unit 1 Regarding Reactor Trip Due to Loss of Rep Breaker Position
| ML090080124 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 01/07/2009 |
| From: | Jerrica Johnson Southern Nuclear Operating Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NL-08-1850 LER 08-004-00 | |
| Download: ML090080124 (6) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 3482008004R00 - NRC Website | |
text
J.R.Johnson Southern Nuclear Vice President - Faney Operating Company, Inc.
Post Office Drawer 470 Ashford, Alabama 36312*0470 Tel 334.814.4511 Fax 334814.4728 January 7, 2009 SGUTHERNA COMPANY En~rgy to S~rv~.YourWorld'"
Docket Nos.: 50-348 NL-08-1850 U. S. Nuclear Regulatory Commission AnN: Document Control Desk Washington, D. C. 20555-0001 Joseph M. Farley Nuclear Plant - Unit 1 Licensee Event Report 2008-004-00 Reactor Trip Due to Loss of RCP Breaker Position Ladies and Gentlemen:
In accordance with the requirements of 10 CFR 50.73(a)(2)(iv)(A), Southern Nuclear Operating Company (SNC) is submitting the enclosed Licensee Event Report.
This letter contains no NRC commitments. If you have any questions, please advise.
f:r;e
.K..~ohn50n Vice President - Farley
~IRJ/CHM
Enclosure:
Unit 1 Licensee Event Report 2008-004-00
U. S. Nuclear Regulatory Commission NL-08-1850 Page 2 cc: Southern Nuclear Operating Company Mr. J. T. Gasser, Executive Vice President Mr. J. R. Johnson, Vice President - Farley Mr. D. H. Jones, Vice President - Engineering RTYPE: CFA04.054; LC # 14869 U. S. Nuclear Regulatory Commission Mr. L. A. Reyes, Regional Administrator Mr. R. E. Martin, NRR Project Manager - Farley Mr. E. L. Crowe, Senior Resident Inspector - Farley
Joseph M. Farley Nuclear Plant - Unit 1 Licensee Event Report 2008-004-00 Reactor Trip Due to Loss of Rep Breaker Position Enclosure Unit 1 Licensee Event Report 2008*004*00
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 08/31/2010 (9-2007)
, the NRC may not COnduct or sponsor, and a person is not required to respond to, the information collection.
- 13. PAGE Joseph M Farley Nuclear Plant Unit 1 05000348 1 of 3
~. TITLE Reactor Trip Due to Loss of Rep Breaker Position
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED FACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR SEQUENTIAL REV MONTH DAY YEAR 05000 NUMBER NO.
FACILITY NAME DOCKET NUMBER 11 19 2008 2008 - 004 -
00 01 07 2009 05000
- 19. OPERATING MODE
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR§: (Check all that apply) o 20.2201(b) o 20.2203(a)(3)(i) o 50.73(a)(2)(i)(C) o 5O.73(a)(2)(vii) 1 o 20.2201(d) o 20.2203(a)(3)(ii) o 50.73(a)(2)(ii)(A) o 5O.73(a)(2)(viii)(A) o 20.2203(a)(1) o 20.2203(a)(4) o 5O.73(a)(2)(ii)(B) o 50.73(a)(2)(vlli)(B) o 20.2203(a)(2)(i) o 50.36(c)(1 )(i)(A) o 50.73(a)(2)(iii) o 5O.73(a)(2)(ix)(A)
- 10. POWER LEVEL o 20.2203(a)(2)(ii) o 50.36(c)(1 )(ii)(A) 181 50.73(a)(2)(iv)(A) o 5O.73(a)(2)(x) o 20.2203(a)(2)(iii) o 50.36(c)(2) o 50.73(a)(2)(v)(A) o 73.71(a)(4) 100 o 20.2203(a)(2)(iv) o 50.46(a)(3)(ii) o 5O.73(a)(2)(v)(B) o 73.71(a)(5) o 20.2203(a)(2)(v) o 50.73(a)(2)(i)(A) o 50.73(a)(2)(v)(C) o OTHER o 20.2203(a)(2)(vi) o 50.73(a)(2)(i)(B) o 50.73(a)(2)(v)(D)
Specify in Abstract below or in (Ifmore space is required, use additional copies of NRC Form 366A) (17)
Safety Assessment
This event had no adverse effect on the safety and health of the public. Reactor Coolant flow though the reactor core was never lost. All safety systems functioned per design and the unit was placed in hot standby.
Corrective Action
The switching control screens for ACC have been updated to alert the ACC operator of the requirement to isolate the shunt reactor prior to operating the air-break disconnect and the requirement to use switching orders for operations at the Farley HVSY. Farley Operations shift personnel and ACC personnel have been briefed of the event.
The RCP Breaker Position Reactor Trip relay power supplies have been aligned to the inverters for all RCPs on both Unit 1 and Unit 2.
Operation Experience (OE) on the event has been issued both internally to all Southern Nuclear sites and externally to the nuclear industry.
Additional Information
Previous Similar Events LER 2007-001-00 LER 2003-001-00 Unit 2 Reactor Trip during Unit 1 Main Generator Differential Lockout Relay Testing Reactor Trip Due to Loss of Power to Reactor Coolant Pump Breaker Position Indication PRINTED ON RECYCLED PAPER) "
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