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Event Notification Report for January 12, 2016

U.S. Nuclear Regulatory Commission Operations Center Event Reports For 01/11/2016 - 01/12/2016 ** EVENT NUMBERS ** 51557 !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! Power Reactor Event Number: 51557 Facility: NORTH ANNA Region: 2 State: VA Unit: [1] [ ] [ ] RX Type: [1] W-3-LP,[2] W-3-LP,[3] M-4-LP NRC Notified By: MICHAEL WHALEN HQ OPS Officer: DONALD NORWOOD Notification Date: 11/20/2015 Notification Time: 15:34 [ET] Event Date: 11/20/2015 Event Time: 08:23 [EST] Last Update Date: 01/11/2016 Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE Person (Organization): MIKE ERNSTES (R2DO) Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode 1 N Y 100 Power Operation 100 Power Operation Event Text INOPERABLE VENT STACK RADIATION MONITOR "At 0823 EST on 11/17/2015, the Unit 1 'A' Vent Stack radiation monitor, 1-VG-RI-179, was declared non-functional due to a faulty heat trace circuit. Compensatory measure to perform grab samples every 6 hours was implemented. At 0823 EST on 11/20/2015, the Unit 1 'A' Vent Stack radiation monitor, 1-VG-RI-179, had been out-of-service for 72 hours. The loss of 1-VG-RI-179 is being reported per 10 CFR 50.72(b)(3)(xiii) as a loss of emergency assessment capability. Corrective actions continue to be pursued to restore 1-VG-Ri-179 to functional status. "The NRC Senior Resident Inspector has been notified by the licensee." * * * UPDATE FROM PATRICK FRENCH TO JOHN SHOEMAKER AT 0931 EST ON 11/22/15 * * * The Unit 1 'A' Vent Stack radiation monitor, 1-VG-RI-179, was returned to service at 1440 EST on 11/21/15. The licensee has notified the NRC Resident Inspector. Notified R2DO (Ernstes). * * * RETRACTION FROM MICHAEL WHALEN TO DONALD NORWOOD AT 1509 EST ON 1/11/2016 * * * "The purpose of this report is to retract the event notification report made in accordance with 10 CFR 50.72(b)(3)(xiii) on November 20, 2015 at 1534 EST (EN# 51557). After further review it has been determined that the performance of grab samples is an approved back-up method for radiological assessment capabilities as described in the North Anna Emergency Plan implementing procedure EPIP-4.24 Gaseous Effluent Sampling During Emergency. During non-emergencies, VPAP-2103N Offsite Dose Calculation Manual governs grab sampling and is tracked by Operations using 1-LOG-14 Non-Routine Surveillance Log. As such, a loss of radiological assessment capability did not exist and the ability to assess EAL RU1.4 was not affected. This is consistent with NUREG 1022, Rev.3, Supplement 1 and NEI 13-01, Rev. 0. The action was cleared at 1440 hours on 11/21/15 and the Unit 1 'A' Vent Stack radiation monitor, 1-VG-RI-179, was returned to functional status. "The NRC Senior Resident lnspector has been informed of this event notification retraction." Notified R2DO (Masters).

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