NL-08-0659, Special Report 2008-001-00, Inoperable Radiation Monitor R-29B

Special Report 2008-001-00, Inoperable Radiation Monitor R-29B

ML081190313
Person / Time
Site:	Farley
Issue date:	04/25/2008
From:	Jerrica Johnson Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-08-0659 SR-08-001-00
Download: ML081190313 (3)

Text

J.R.Johnson Southern Nuclear Vice President - Farley Operating Company. Inc.

Post Offfce Drawer 470 Ashford. Alabama 36312*0470 Tel 334.814.4511 Fax 334.814.4728 SOUTHIRNA COMPANY April 25, 2008 Energy to Serve Your World""

Docket No.: 50-348 NL-08-0659 U. S. Nuclear RegUlatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Joseph M. Farley Nuclear Plant, Unit 1 Special Report 2008-001=00. Ino.otrable Radiation Monitor R-298 Ladies and Gentlemen:

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

TR 13.3.4, the enclosed Special Report No. 2008-001-00 (Unit 1) is submitted.

This letter contains no NRC commitments. If you have any questions, please advise.

Since 'Yf J . Johnson ice President - Farley JRJ/CHMldaj

Enclosure:

Special Report 2008-001-00 00: Soythem Nuclear Ooerating ComPanY Mr. J. T. Gasser. Executive Vice President Mr. J. R. Johnson, Vice President - Farley Mr. D. H. Jones, Vice Pr8$ident- Engineering RTYPE: CFA04.054; LCI 14756 U. S. Nuclear Regulatory Commission Mr. V. M. McCree, Acting Regional Administrator Mr. R. A. Jervey, NAB Project Manager - Farley Mr. E. L Crowe, Senior Resident Inspector - Farley

Joseph M. Farley Nuclear Plant, Unit 1 Special Report 2008-001-00, Inoperable Radiation Monitor R-29B Enclosure Special Report 2008-001-00

Joseph M. Farley Nuclear Plant, Unit 1 Special Report 2008-001-00, Inoperable Radiation Monitor R-29B Enclosure Special Report 2008-001-00 This Special Report is being submitted due to the Unit 1 radiation monitor R-29B (Plant Vent Stack Effluent Radiation Monitor) not being restored to operable status within the time required by Technical Requirements Manual (TRM) TR 13.3.4. TR 13.3.4 requires the monitor to be restored to operable status within 7 days or submit a Special Report within the next 14 days following the event.

At 0800 on April 8, 2008, surveillance testing of radiation monitor R-29B was being performed. During testing SNC determined that the detector would not calibrate and R-29B was declared inoperable. A mandatory Limiting Condition of Operation (LCO) was written for R-29B requiring restoration to operable status by 0800 on April 15, 2008, and a work order was generated to repair R-29B.

The detector was removed for calibration. During the calibration procedure, it was determined that the new detector would not meet the tolerance band that SNC had established for one of the calibration points. This problem prevented SNC from meeting the required return to service date and resulted in this Special Report. Through discussions with the detector vendor and a review of the response curve for the detector currently used, it was determined that the SNC acceptance criteria required revision for the point in question. Adjustments were made to the procedural tolerance and the detector was successfully calibrated and returned to service on April 24, 2008.