ML053120277
| ML053120277 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 10/31/2005 |
| From: | O'Connor T Constellation Energy Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NMPIL 1998 | |
| Download: ML053120277 (2) | |
Text
Constellation Energy:
Nine Mile Point Nuclear Station P.O. Box 63 Lycoming, NY 13093 October 31, 2005 NMP1L 1998 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 October 17, 2005, at approximately 0312 hours0.00361 days <br />0.0867 hours <br />5.15873e-4 weeks <br />1.18716e-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 Inoperabilitv Channel #12 of the CHM System was removed from service to support scheduled preventive maintenance which required replacement of the bypass and analyzer cabinet solenoid operated valves.
Page 2 NMP1L 1998 Actions Taken Post maintenance testing was performed satisfactorily and Channel #12 of the CHM System was restored to operable status on October 24, 2005, at approximately 0954 hours0.011 days <br />0.265 hours <br />0.00158 weeks <br />3.62997e-4 months <br />.
Should you have any questions regarding this submittal, please contact James Hutton, Director Licensing, at (315) 349-1041.
TJO/RF/sac cc:
Mr. S. J. Collins, NRC Regional Administrator, Region I Mr. L. M. Cline, NRC Senior Resident Inspector