05000348/LER-2013-003, Regarding 1C Steam Generator Flow Transmitter Inoperable Longer than Allowed by Technical Specifications
| ML14003A279 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 01/03/2014 |
| From: | Pierce C Southern Co, Southern Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NL-13-2545 LER 13-003-00 | |
| Download: ML14003A279 (6) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 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)(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)(ix)(A) 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 |
| 3482013003R00 - NRC Website | |
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Charles R. Pierce Southern Nuclear Regulatory Affairs Director Operating Company, Inc.
40 Inverness Center Parkway Post Office Box 1295 Birmingham, AL 35242 Tel 205.992.7872 Fax 205.992.7601 January 3, 2014 Docket Nos.: 50-348 NL-13-2545 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Joseph M. Farley Nuclear Plant - Unit 1 Licensee Event Report 2013-003-00 1 C Steam Generator Flow Transmitter Inoperable Longer Than Allowed By Technical Specifications Ladies and Gentlemen:
In accordance with the requirements of 10 CFR 50.73(a)(2)(i)(B) Southern Nuclear Operating Company hereby submits the enclosed Licensee Event Report. This letter contains no NRC commitments. If you have any questions, please contact Bill Arens at (334) 814-4765.
Sincerely, Mr. C. R. Pierce Regulatory Affairs Director CRP/WI\\JA Enclosure: Unit 1 Licensee Event Report 2013-003-00
U. S. Nuclear Regulatory Commission NL-13-2545 Page 2 cc:
Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President & CEO Mr. D. G. Bost, Executive Vice President & Chief Nuclear Officer Ms. C. A. Gayheart, Vice President - Farley Mr. B. L. Ivey, Vice President - Regulatory Affairs Mr. D. R. Madison, Vice President - Fleet Operations Mr. J. G. Horn, Regulatory Affairs Manager - Farley Mr. W. H. Sims - Performance Improvement 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 - Unit 1 NL-13-2545 1 C Steam Generator Flow Transmitter Inoperable Longer Than Allowed By Technical Specifications Enclosure Unit 1 Licensee Event Report 2013-003-00
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (10-2010)
UCENSEE EVENT REPORT (LER)
APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2013
, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
- 1. FACILITY NAME Joseph M. Farley Nuclear Plant, Unit1
- 2. DOCKET NUMBER
- 13. PAGE 05000348 1 OF 3
- 4. TITLE 1 C Steam Generator Flow Transmitter Inoperable Longer Than Allowed by Technical Specifications
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED MONTH DAY YEAR YEAR SEQUENTIAL NUMBER REV NO.
MONTH DAY YEAR FACILITY NAME DOCKET NUMBER 11 5
2013 2013 - 003 -
00 1
3 2014 FACILITY NAME DOCKET NUMBER
- 9. OPERATING MODE 1
- 11. THIS REPORT IS SUBMITIED 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 50.73(a)(2)(vii)
D 20.2201 (d) o 20.2203(a)(3)(ii) o 50.73(a)(2)(ii)(A) o 50.73(a)(2)(viii)(A) o 20.2203(a)(1) o 20.2203(a)(4) o 50.73(a)(2)(ii)(B) o 50.73(a)(2)(viii)(B) o 20.2203(a)(2)(i) o 50.36(c)(1 )(i)(A) o 50.73(a)(2)(iii) o 50.73(a)(2)(ix)(A) o 20.2203(a)(2)(ii) o 50.36(c)(1 )(ii)(A) o 50.73(a)(2)(iv)(A) o 50.73(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) o 20.2203(a)(2)(iv) o 50.46(a)(3)(ii) o 50.73(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 [J 20.2203(a)(2)(vi) 18150.73(a)(2)(i)(B) o 50.73(a)(2)(v)(D)
Specify in Abstract below or in main steam line isolation circuitry were available to actuate a main steam line isolation at the proper setpoint. At no time was there a loss of safety function.
Another means of providing a main steam line isolation in the event of a steam line break is the low-steam-pressure main steam line isolation signal. This function remained fully capable of performing the main steam line isolation function during the periods that FT-495 was known to be inoperable.
Based on the above considerations and on the FT-495 setpoint being outside the allowable tolerance but otherwise functional, this condition is considered to have low safety significance.
Corrective Action
An immediate corrective action of rescaling FT-495 loop was performed. The loop was declared operable on November 6,2013. Upon completion of the causal analysis, this Licensee Event Report will be supplemented with further corrective actions.
Additional Information
A review of previously submitted Licensee Event Reports identified two similar previous events on Unit 2, both were reported in Farley Unit 2 LER 2013-001-00, in which the 2C Steam Generator Flow Transmitter FT-494 was inoperable longer than allowed by Technical Specifications.