ML062970246
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| ML062970246 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 10/16/2006 |
| From: | O'Connor T Constellation Energy Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML062970246 (2) | |
Similar Documents at Nine Mile Point | |
|---|---|
Category:Letter
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'4-Constellation Energy Nine Mile Point Nuclear Station October 16, 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 # 12 of the Containment Hydrogen Monitoring System Inoperable for Planned Preventive Maintenance 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.
Descriptionof Event On October 2, 2006, at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />, operators declared Channel #12 of the CHM System inoperable for performance of planned preventive maintenance.
Cause of Inoperabilitv Channel #12 of the CHM System was declared inoperable for performance of planned preventive maintenance. Preventive maintenance consisted of replacement of the bypass and analyzer cabinet solenoid operated valves.
Channel #11 of the CHM System was verified to be operable prior to removing Channel #12 from service.
Actions Taken Post maintenance testing was completed satisfactorily and Channel #12 of the CHM System was restored to operable status on October 6, 2006, at 1021 hours0.0118 days <br />0.284 hours <br />0.00169 weeks <br />3.884905e-4 months <br />.
SI, Document Control Desk October 16, 2006 Page 2 Should you have any questions regarding this submittal, please contact M. H. Miller, Licensing Director, at (315) 349-1510.
Plant General Manager TJO/DEV/kms cc: S. J. Collins, NRC Resident Inspector, NRC
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