ENS 48407
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ENS Event | |
|---|---|
10:56 Oct 15, 2012 | |
| Title | Area Radiation Monitor Used for Emergency Assessment Failed |
| Event Description | At 0656 on 10/15/2012, the Unit 3 Control Room received indication that the area radiation monitor, 3RlA-15 for Unit 3 High Pressure Injection (HPI) Pump Room had faulted. 3RIA-15 is used in the Oconee Emergency Plan Enclosure 4.3 (Abnormal Rad Levels Radiological Effluent) and Enclosure 4.4 (Loss of Shutdown Functions) for declaration of NOUE and/or Alert. Although the loss of a single area radiation monitor is not generally reportable, the loss of 3RIA-15 is conservatively considered as a major loss of emergency assessment capability pending further review of the Oconee Emergency Plan. The loss of 3RIA-15 is being reported per 10 CFR 50.72(b)(3)(xiii).
Initial Safety Significance: None. There is no event in progress and the station has implemented an alternate means to monitor area radiation for the Unit 3 HPI Room. Corrective Action(s): Repair and restoration of the affected radiation monitor has been initiated as a high priority work request. An alternate means to monitor Unit 3 HPI Pump Room has been established. The station will notify the appropriate Emergency Response Organization personnel of the loss of 3RIA-15. Corrective actions are in place to review station procedures/processes for improvement relative to reporting requirements of 10 CFR 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:+3.68 h0.153 days <br />0.0219 weeks <br />0.00504 months <br />) | |
| Opened: | Bob Meixell 14:37 Oct 15, 2012 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Oct 15, 2012 |
| 48407 - 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 | |
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