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Category:Letter
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[Table view] Category:Licensee 30-Day Written Event Report
MONTHYEARML15275A2732015-09-24024 September 2015 Submits Thirty (30) Day Special Report Due to a Radiation Monitor Being Inoperable for Greater than 30 Days ML12233A6212012-08-16016 August 2012 ECCS 30-Day Report for the Thermal Conductivity Degradation Impact on Large Break Loss of Coolant Accident Analysis with Astrum ML11347A1952011-12-0606 December 2011 R. E. Ginna Nuclear Power Plant - Thirty (30) Day Special Report - Inoperable Radiation Monitors ML11221A0232011-08-0202 August 2011 Thirty (30) Day Special Report ML0720603692007-07-0505 July 2007 Follow-up Summary of Close-Out of July 4, 2007 Unusual Event Classification ML0420802562004-07-20020 July 2004 Thirty (30) Day Special Report Inoperable Fire Barrier Component, Due to Door Blocked Open for Ginna Nuclear Power Plant ML0322506402003-08-0707 August 2003 Special Report, Containment Area Radiation (High Range) Instrumentation Inoperable for More than 30 Days ML18143A9601976-05-25025 May 1976 R. E. Ginna - Supplemental Report on Reportable Occurrence 76-12, 30-Day Report, Containment Personnel Airlock Handwheel Shaft Seal Excessive Leakage During Testing 2015-09-24
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Thomas Mogren Manager - Engineering Services R.E. Ginna Nuclear Power Plant, LLC C E NG a joint venture of eoF I585.771.5208 1503 Lake Road Ontario, New York 14519-9364 cmsmJ14eDF 585.771.3392 Fax Thomas.Mogren@cengllc.com August 2, 2011 U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 ATTENTION: Document Control Desk
SUBJECT:
R.E. Ginna Nuclear Power Plant Docket No. 50-244 Thirty (30) Day Special Report Radiation monitor RM-14A, Channel 3, Plant Vent Iodine Accident Range Radiation Monitor, was inoperable for greater than 30 days. This special report is submitted in accordance with Section 3.3 and Table 3.3-1, Action 1, of the R.E. Ginna Nuclear Power Plant Offsite Dose Calculation Manual (ODCM), Revision 27, which requires that the radiation monitor be operable during all modes of operation. This report outlines the action taken, the cause of the inoperability, and period of time the monitor was inoperable.
Radiation monitor RM-14A, Channel 3 was taken out of service on 6/21/11 at 09:05 for the required quarterly calibration. However, due to not satisfying the procedural requirement for sensitivity, the radiation monitor could not be returned to service. Subsequent calibration attempts were performed with adjustments to the attenuator and gain being necessary. After the appropriate adjustments were implemented, the calibration yielded a satisfactory sensitivity in accordance with the calibration procedure. The radiation monitor was returned to operable status on 7/21/11 at 21:46.
Return to service of the radiation monitor was delayed based on the required troubleshooting, impact of the radioactive source strength, inability to replace the detector due to the lack of a qualified spare detector and scheduling constraints. Corrective Action Program condition report CR-2011-005288 was opened to document the radiation monitor being inoperable for greater than 30 days.
Document Control Desk August 2, 2011 Page 2 Should you have questions regarding this matter, please contact Thomas Harding at 585.771.5219 or Thomas.HardingJr@CENGLLC.com.
V~pu~ulyyours Thomas Mogre(
cc: W.M. Dean, NRC D. V. Pickett, NRC Resident Inspector, NRC (Ginna)