05000348/LER-2013-004, Regarding Unfused DC Ammeter Circuits Results in an Unanalyzed Condition

Regarding Unfused DC Ammeter Circuits Results in an Unanalyzed Condition

ML14045A343
Person / Time
Site:	Farley
Issue date:	02/14/2014
From:	Gayheart C Southern Co, Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-14-0208 LER 13-004-00
Download: ML14045A343 (6)

LER-2013-004, Regarding Unfused DC Ammeter Circuits Results in an Unanalyzed Condition

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 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 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications
3482013004R00 - NRC Website

text

Cheryl A. Gayheart V1ce Pms1dent *Farley February 14, 2014 Southam Nuclear Operating Company, Inc.

Farley Nuclear Plant Post Olhce Drawer 470 Ashford. Alabama 36312 Te 334.814 4511 Fax 334 8144575 Docket Nos.: 5Q-34B 50-364 U. S. Nuclear Regulatory Commission ATIN: Document Control Desk Washington, D. C. 20555-0001 SOUTHERN A COMPANY NL-14-0208 Joseph M. Farley Nuclear Plant-Units 1 and 2 Ucensee Event Report 2013-004-00 Unfused DC Ammeter Circuits Result in an Unanalyzed Condition Ladies and Gentlemen:

This Ucensee Event Report, "Unfused DC Ammeter Circuits Result in an Unanalyzed Condition," is being submitted pursuant to the requirements of the Code of Federal Regulations, 10 CFR 50.73(a)(2)(ii)(B), "The nuclear plant being in an unanalyzed condition that significantly degraded plant safety."

This letter contains no NRC commitments. If you have any questions regarding the submittal, please contact Mr. Bill Arens at (334) 814-4765.

Sincerely, Ms. C.

yheart Vice President-Farley CAG/WNA Enclosure: Units 1 and 2 Licensee Event Report 2013-004-00

U.S. Nuclear Regulatory Commission NL-14-0208 Page 2 cc:

Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President & CEO Mr. D. G. Bast, Executive Vice President & Chief Nuclear Officer Mr. B. L. lvey, Vice President-Regulatory Affairs Mr. C. R. Pierce, Regulatory Affairs Director Mr. D. R. Madison, Vice President-Fleet Operations Mr. J. G. Horn, Regulatory Affairs Manager-Farley Mr. J. E. Purcell, Nuclear Technical Specialist-Farley Ms. K. A. Walker, Senior Engineer - Farley RTYPE: CFA04.054 U.S. Nuclear Regulatory Commission Mr. V. M. McCree, Regional Administrator Mr. G. E. Miller, NRR Project Manager-Farley Mr. P. K. Niebaum, Senior Resident Inspector-Farley Mr. J. R. Sowa, Resident Inspector-Farley Mr. R. E. Martin, Senior Project Manager-Farley

Joseph M. Farley Nuclear Plant-Units 1 and 2 Unfused DC Ammeter Circuits Result in an Unanalyzed Condition Enclosure Units 1 and 2 Licensee Event Report 2013-004-00

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 01/31/2017 (01*2014)

, 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 05000 348 1 OF 3

4. TITLE Unfused DC Ammeter Circuits Result in an Unanalyzed Condition

5. EVENT DATE

6. LEA NUMBER

7. REPORT DATE

8. OTHER FACILITIES INVOLVED SEQUENTIAL REV FACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR NUMBER NO.

MONTH DAY YEAR Farley Nuclear Plant, Unit 2 05000 364 FACILITY NAME DOCKET NUMBER 12 16 2013 2013 - 004 -

00 02 14 2014

9. OPERATING MODE

11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR§: (Check all that apply)

D 20.2201 (b)

D 20.2203(a)(3)(i) 0 50.73(a)(2)(i)(C) 0 50.73(a)(2)(vii) 1 D 20.2201 (d)

D 20.2203(a)(3)(ii)

D 50.73(a)(2)(ii)(A)

D 50.73(a)(2)(viii)(A)

D 20.2203(a)(1)

D 20.2203(a)(4) 181 50. 73(a)(2)(ii)(B)

D 50.73(a)(2)(viii)(B)

D 20.2203(a)(2)(i)

D 50.36(c)(1 )(i)(A)

D 50.73(a)(2)(iii)

D 50. 73(a)(2)(ix)(A)

10. POWER LEVEL D 20.2203(a)(2)(ii)

D 50.36(c)(1 )(ii)(A)

D 50.73(a)(2)(iv)(A)

D 50.73(a)(2)(x)

D 20.2203(a)(2)(iii)

D 50.36(c)(2)

D 50.73(a)(2)(v)(A)

D 73.71(a)(4) 100 D 20.2203(a)(2)(iv)

D 50.46(a)(3)(ii)

D 50.73(a)(2)(v)(B)

D 73.71 (a)(5) 0 20.2203(a)(2)(v)

D 50.73(a)(2)(i)(A)

D 50.73(a)(2)(v)(C) 0 OTHER D 20.2203(a)(2)(vi) 0 50.73(a)(2)(i)(B)

D 50.73(a)(2)(v)(D)

Specify in Abstract below or in

6. LER NUMBER I

SEQUENTIAL

'REVISION NUMBER NUMBER 004 00

3. PAGE 3

OF condition. Plant modifications are being developed to provide overcurrent protection for the affected DC ammeter circuitry.

Additional Information

3 A review of past LEAs at Farley from 2008 to present identified no similar design deficiencies impacting alternate safe shutdown capability.