ML060670363

Special Report: Channel #11 of the Containment Hydrogen Monitoring System Inoperable for Planned Preventive Maintenance

ML060670363
Person / Time
Site:	Nine Mile Point
Issue date:	02/27/2006
From:	Hutton J Constellation Energy Group
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML060670363 (3)

Text

Constellation Energyr P.O. Box 63 Lycoming, NY 13093 Nine Mile Point Nuclear Station February 27, 2006 U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 ATTENTION: Document Control Desk

SUBJECT:

Nine Mile Point Nuclear Station Unit No. 1; Docket No. 50-220 Special Report: Channel #11 of the Containment Hydrogen Monitoring System Inoperable for Planned Preventive Maintenance In accordance with Action 4.a of Nine Mile Point Unit I Technical Specification Table 3.6.11-2, "Accident Monitoring Instrumentation Action Statements," Nine Mile Point Nuclear Station, LLC, is submitting the following Special Report concerning inoperability of Channel #11 of the Containment Hydrogen Monitoring (CHM) System.

Description ofEvent On February 13, 2006, at 0844 hours0.00977 days <br />0.234 hours <br />0.0014 weeks <br />3.21142e-4 months <br />, operators declared Channel #11 of the CHM System inoperable to perform planned preventive maintenance.

Cause of Inoperabifitv Channel #11 of the CHM System was removed from service to support planned preventive maintenance. Maintenance activities included component replacements required on one, two and ten year frequencies.

Channel # 12 of the CHM System was verified to be operable prior to removing Channel #11 from service.

Actions Taken Maintenance was completed, surveillance testing was performed satisfactorily and Channel #11 of the CHM System was restored to operable status on February 17, 2006, at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />.

Should you have any questions regarding this submittal, please contact M. H. Miller, Licensing Director, at (315) 349-1510.

_;_1

Document Control Desk February 27, 2006 Page 2 Sincerely,

'Jaames A. Hutton Plant General Manager JAH/RF/sac cc: S. J. Collins, NRC Regional Administrator, Region I L. M. Cline, NRC Senior Resident Inspector

Document Control Desk February 27, 2006 Page 3 bcc: T. J. O'Connor J. A. Hutton T. Syrell M. H. Miller NMPIL 2029 COMMITMENTS IDENTIFIED IN THIS CORRESPONDENCE:

• NONE PostingRequirementsfor Responses - NOV/Order No