ML050250145
| ML050250145 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 01/17/2005 |
| From: | O'Connor T Constellation Energy Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NMP1L 1917 | |
| Download: ML050250145 (2) | |
Text
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Constellation Energy-Nine Mile Point Nuclear Station P.O. Box 63 Lycoming, New York 13093 January 17, 2005 NMP1L 1917 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001
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 Scheduled Preventive 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 January 3, 2005, at approximately 1038 hours0.012 days <br />0.288 hours <br />0.00172 weeks <br />3.94959e-4 months <br />, operators declared Channel #12 of the CHM System inoperable to perform scheduled preventive maintenance.
The redundant Channel #11 was verified to be operable prior to removal of Channel #12 from service.
Cause of Event Channel #12 of the CHM System was removed from service to support scheduled preventive maintenance which included replacement of the bypass and analyzer cabinet solenoid operated valves.
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NMP1L 1917 Page 2 Corrective Actions Channel #12 of the CHMI System was restored to operable status on January 6, 2005, at approximately 1459 hours0.0169 days <br />0.405 hours <br />0.00241 weeks <br />5.551495e-4 months <br />.
TJO/RF/jm cc:
Mr. S. J. Collins, NRC Regional Administrator, Region I Mr. G. K. Hunegs, NRC Senior Resident Inspector