ML090360517

Special Report: Inoperable Channel of Suppression Chamber Water Level Instrumentation

ML090360517
Person / Time
Site:	Nine Mile Point
Issue date:	01/21/2009
From:	Belcher S L Constellation Energy Group
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML090360517 (2)

Text

Sam L. Belcher Plant General Manager P.O. Box 63 Lycoming, New York 13093 315.349.5205 315.349.1321 Fax Constellation Energy Nine Mile Point Nuclear Station January 21, 2009 U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 ATTENTION:

SUBJECT:

Document Control Desk Nine Mile Point Nuclear Station Unit No. 1; Docket No. 50-220 Special Report: Inoperable Channel of Suppression Chamber Water Level Instrumentation In accordance with Action 4 of Nine Mile Point Unit I (NMPI) Technical Specification (TS) Table 3.6.11-2, "Accident Monitoring Instrumentation Action Statements," Nine Mile Point Nuclear Station, LLC (NMPNS), is submitting the following Special Report concerning inoperability of a Suppression Chamber Water Level Instrument.

Description of Event On January 9, 2009, at 0845, one channel of Suppression Chamber Water Level instrumentation, LT-58-06 (TS Table 3.6.11-1, Item 5) was declared inoperable due to planned maintenance.

The redundant channel of Suppression Chamber Water Level instrumentation was operable during the period LT-58-06 was inoperable.

Cause of Inoperability Suppression Chamber Water Level instrument (LT-58-06) was removed from service for planned maintenance to replace an Environmental Qualification (EQ) splice.Action Taken The maintenance activity was completed and LT-58-06 declared operable at 1830 hours0.0212 days <br />0.508 hours <br />0.00303 weeks <br />6.96315e-4 months <br /> on January 9, 2009.ki~D Document Control Desk J January 21, 2009 /Page 2 7./Should you have any questions regarding the information in this submittal, -please contact T. F. Syrell, Licensing Director, at (315) 349-5219.Very truly yours, SLB/GNS cc: S. J. Collins, NRC R. V. Guzman, NRC Resident Inspector, NRC