ENS 48264
ENS Event | |
|---|---|
02:30 Sep 2, 2012 | |
| Title | Radiation Monitor Declared Inoperable |
| Event Description | This is a non-emergency report. No actual event has occurred.
At 2230 hours0.0258 days <br />0.619 hours <br />0.00369 weeks <br />8.48515e-4 months <br /> EDT, on September 01, 2012, Oconee Nuclear Station Operations determined that the radiation monitor for Low Gas Unit Vent monitoring failed its check source and was declared inoperable. This monitor is used for determination of Emergency Action Levels (EALs) in ALL Modes. Specifically, the criterion states that an Unusual Event should be declared if this radiation monitoring reading reaches 9.35E5 for greater than 60 minutes. This condition was discovered during weekly radiation monitor setpoint determinations. There is no adverse impact on nuclear safety. A redundant method for sampling and determination of activity levels has been implemented per SLC 16.11.3. The same EAL criterion has a redundant determination of Unusual Event classification based on these activity levels. This report is submitted based upon a loss of emergency assessment capability in accordance with 50.72(b)(3)(xiii). The NRC Resident Inspector has been informed. |
| Where | |
|---|---|
Oconee  South Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+3.87 h0.161 days <br />0.023 weeks <br />0.0053 months <br />) | |
| Opened: | Jeff Hrynda 06:22 Sep 2, 2012 |
| NRC Officer: | Dong Park |
| Last Updated: | Sep 2, 2012 |
| 48264 - NRC Website
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Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 547712020-07-10T13:00:00010 July 2020 13:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Common Emergency Operations Facility Maintenance ENS 545092020-02-03T14:15:0003 February 2020 14:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability Due to Planned Tsc and Osc Upgrades ENS 495112013-11-07T17:00:0007 November 2013 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Taken Out of Service for Planned Maintenance ENS 487702013-02-19T15:54:00019 February 2013 15:54:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Oconee Alert and Notification System Sirens Out of Service ENS 484072012-10-15T10:56:00015 October 2012 10:56:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Area Radiation Monitor Used for Emergency Assessment Failed ENS 482842012-09-06T00:06:0006 September 2012 00:06:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Inoperable Accident Radiation Monitors ENS 482652012-09-02T16:00:0002 September 2012 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage of Emergency Operations Facility ENS 482642012-09-02T02:30:0002 September 2012 02:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Declared Inoperable ENS 422062005-12-15T14:30:00015 December 2005 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Power ENS 410502004-09-17T14:30:00017 September 2004 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Siren Capability 2020-07-10T13:00:00 | |