NL-16-0810, Submittal of Post Accident Monitoring Report
| ML16161B242 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 06/09/2016 |
| From: | Gayheart C Southern Co, Southern Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NL-16-0810 | |
| Download: ML16161B242 (4) | |
Text
Cheryl A. Gayheart Vice President* Farley Southern Nuclear Operating Company, Inc.
Farley Nuclear Plant Post Office Drawer 470 Ashford, AL 36312 Tel334.814.4511 Fax 334.814.4575 SOUTHERN..
NUCLEAR A SOUTHERN COMPANY June 9, 2016 Docket Nos.: 50-364 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Joseph M. Farley Nuclear Plant, Unit 2 Post Accident Monitoring Report Ladies and Gentlemen:
NL-16-0810 In accordance with the requirements of Technical Specification 5.6.8, the enclosed Post Accident Monitoring Report is submitted.
This letter contains no NRC commitments. If you have any questions, please contact John W. Mclean IV at (334) 899-5156.
Sincerely, CAG/JWM
Enclosure:
Post Accident Monitoring Report cc:
Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President & CEO Mr. D. G. Bast, Executive Vice President & Chief Nuclear Officer Mr. M.D. Meier, Vice President-Regulatory Affairs Mr. D. R. Madison, Vice President-Fleet Operations Mr. C. R. Pierce, Director-Regulatory Affairs Mr. B. J. Adams, Vice President-Engineering Ms. B. L. Taylor, Regulatory Affairs Manager-Farley RTYPE: CFA04.054
U.S. Nuclear Regulatory Commission Ms. C. Haney, Regional Administrator Mr. S. A. Williams, NRR Project Manager-Farley Mr. P. K. Niebaum, Senior Resident Inspector-Farley U.S. Nuclear Regulatory Commission NL-16-0810 Page 2
Joseph M. Farley Nuclear Plant, Unit 2 Post Accident Monitoring Report Enclosure Post Accident Monitoring Report
Joseph M. Farley Nuclear Plant, Unit 2 Post Accident Monitoring Report Enclosure Post Accident Monitoring Report This Report is being submitted due to the Unit 2 Containment Sump Level Indicator L T3594A not being restored to operable status within the time required by Technical Specifications (TS) 3.3.3. The Required Action Statement requires that the indicator be restored to operable status within 30 days. If not restored within the 30 day period, a Post Accident Monitoring Report is required to be submitted within the following 14 days per TS 5.6.8.
Background Information:
At 0439 on May 6, 2016, with Unit 2 in Mode 3, Containment Sump Level Indicator LT3594A was declared inoperable due to a failed low indication. A mandatory Technical Specifications Limiting Condition for Operation (LCO) was written requiring restoration to operable status by June 5, 2016 at 0439.
Cause of the lnoperability:
A work order was generated to troubleshoot L T3594A. Troubleshooting of the failed low indication iSolated the problem to the power supply cable. Causal analysis identified that component aging was the cause of the failure of the power supply cable.
Alternative Monitoring Method:
There are two separate indicators available to provide Containment Sump level indication. Containment Sump monitoring is still available using the opposite train indicator L T35948. TS Required Action Statements are being met for Containment Sump Level Indicator L T3594A inoperability.
Plans and Schedule for Restoration:
The troubleshooting work order was revised to perform replacement of the failed power cable and will be completed per the Work Management process.