05000364/LER-2013-003, Special Report, Nonfunctional Radiation Monitor R-60D

Special Report, Nonfunctional Radiation Monitor R-60D

ML13322B271
Person / Time
Site:	Farley
Issue date:	11/18/2013
From:	Pierce C Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-13-2194 LER 13-003-00
Download: ML13322B271 (3)

LER-2013-003, Special Report, Nonfunctional Radiation Monitor R-60D

Event date:
Report date:
3642013003R00 - NRC Website

text

Charles R. Pierce Southern Nuclear Regulatory Affairs Director Operating Company, Inc.

40 Inverness Center Parkway Post Office Box 1295 Bi rmingham. Alabama 35201 Tel 205 992.7872 Fax 205.992.7601 November 18, 2013 SOUTHERN '\\

COMPANY Docket Nos.: 50-364 NL-13-2194 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Joseph M. Farley Nuclear Plant, Unit 2 Special Report 2013-003-00, Nonfunctional Radiation Monitor R-60D Ladies and Gentlemen:

In accordance with the requirements of Technical Requirements Manual (TRM)

TR 13.3.4, the enclosed Special Report No. 2013-003-00 (Unit 2) is submitted.

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

Sincerely, C. R. Pierce Regulatory Affairs Director TALlWNAllac Enclosure: Special Report 2013-003-00 cc:

Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President & CEO Mr. D. G. Bost, Executive Vice President & Chief Nuclear Officer Mr. B. l. Ivey, Vice President - Regulatory Affairs Mr. B. J. Adams, Vice President - Fleet Operations Mr. T. A. Lynch, Vice President - Farley Mr. J. G. Horn, Regulatory Affairs Manager - Farley RTYPE: CFA04.054 U. S. Nuclear Regulatory Commission Mr. V. M. McCree, Regional Administrator Mr. G. E. Miller, NRR Project Manager - Farley Mr. R. E. Martin, Senior Project Manager-Farley Mr. P. K. Niebaum, Senior Resident - Farley

Joseph M. Farley Nuclear Plant, Unit 2 Special Report 2013-003-00, Nonfunctional Radiation Monitor R-60D Enclosure Special Report 2013-003-00

Joseph M. Farley Nuclear Plant, Unit 2 Special Report 2013-003-00, Nonfunctional Radiation Monitor R-60D Enclosure Special Report 2013-003-00 This Special Report is being submitted due to the Unit 2 radiation monitor R-60D (Auxiliary Feed Pump Turbine Exhaust Monitor) not being restored to functional status within the time required by Technical Requirements Manual (TRM) TR 13.3.4. The TRM requires that the monitor be restored to functional status within 7 days or submit a Special Report within the following 14 days.

At 2244 on October 30, 2013 radiation monitor R-60D was declared nonfunctional due to a failed indication on the control panel. A TRM Required Action was entered requiring restoration to functional status by November 6, 2013 at 2244 hours0.026 days <br />0.623 hours <br />0.00371 weeks <br />8.53842e-4 months <br /> and a work order (SNC530865) was generated to repair R-60D.

Troubleshooting isolated the instrument problem to the detector assembly. Due to the detector's location on the main steam valve room roof in close proximity to steam generator safety relief valve exhaust piping, repair of the monitor is a personnel safety risk should any relief valve lift during the repair effort.

Therefore, repair of the monitor will be performed only under cold shutdown conditions. R-60D is scheduled to be repaired during the next refueling outage currently scheduled for fall 2014 or at the next outage of sufficient duration when the plant will be in cold shutdown. Compensatory measures have been established and TRM action requirements are being met for radiation monitor R 60D nonfunctionality.

As reported in Farley Unit 2 Special Reports 2013-001-00 and 2013-002-00, there have been two previous failures of Unit 2 steam exhaust radiation monitors during the current operating cycle under similar circumstances. A common cause analysis per CAR 208217 has been initiated to investigate these three failures. In addition to the repairs to be made to each detector at the next opportunity, design changes per DCPs SNC54928 and SNC73409 are currently scheduled for implementation in the Spring of 2015 for Unit 1 and in the Spring of 2016 for Unit

2. The design changes wi" relocate the steam exhaust detectors on both units to provide improved environmental conditions and on-line accessibility.