ML050240255
| ML050240255 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 01/12/2005 |
| From: | O'Connor T Constellation Energy Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NMUP1L 1914 | |
| Download: ML050240255 (2) | |
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M Constellation Energy-RO. Box 63 Nine Mile Point Nuclear Station Lycoming, New York 13093 January 12, 2005 NMUP1L 1914 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
SUBJECT:
Nine Mile Point Unit 1 Docket No. 50-220 License No. DPR-63 Special Report, Channel #12 of the Containment Hydrogen Monitoring System Inoperable for Planned Maintenance Gentlemen:
In accordance with Action 4.a of Nine Mile Point Unit 1 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 #12 of the Containment Hydrogen Monitoring (CHM) System.
Description of Event On December 29, 2004 at approximately 0308 hours0.00356 days <br />0.0856 hours <br />5.092593e-4 weeks <br />1.17194e-4 months <br />, operators declared Channel #12 of the CHM System inoperable to perform planned maintenance.
ThieredundaintChiannel $#1-was verified to beioperable prior to-re-mo6vil of Channel #12-from service.
Cause of Event Channel #12 of the CHM System was removed from service to support planned maintenance that included testing of the feeder breaker to the sample pumps, bypass pump and cabinet heaters and an inspection of the breaker housing.
Page 2 NMP1L 1914 Corrective Actions Channel #12 of the CHM System was restored to operable status on December 29, 2004, at approximately 2218 hours0.0257 days <br />0.616 hours <br />0.00367 weeks <br />8.43949e-4 months <br />.
V trul yo S TiiiibyJ; O'Connor PlantI neral Manager TJO/RF/jm cc:
Mr. S. J. Collins, NRC Regional Administrator, Region I Mr. G. K. Hunegs, NRC Senior Resident Inspector