ENS 51115
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ENS Event | |
|---|---|
15:26 Jun 1, 2015 | |
| Title | Loss of Unit 2 Ventilation Radiation Monitor Operability |
| Event Description | On June 2, 2015 at 2027 CDT, it was discovered that the unit vent radiation monitor was inoperable beginning on June 1, 2015 at 1026 CDT. Compensatory measures were not taken in accordance with the Offsite Dose Calculation Manual (ODCM) during this time period and the radiation monitor was unable to be used to assess Emergency Action Levels in accordance with the Emergency Plan. On June 3, 2015 it was recognized that because no compensatory measures were implemented during the period of inoperability that the condition resulted in a major loss of emergency assessment capability which is reportable under 10CFR50.72(b)(3)(xiii). Compensatory measures were implemented per the ODCM upon discovery on June 2 at 2027, thus there is currently no major loss of emergency assessment capability.
This event did not result in any challenges to the fission product barriers and it did not adversely affect the safe operation of the plant or the health and safety of the public. The NRC Resident Inspector will be notified. |
| Where | |
|---|---|
South Texas  Texas (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+48.6 h2.025 days <br />0.289 weeks <br />0.0666 months <br />) | |
| Opened: | Silvestre Romero 16:02 Jun 3, 2015 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Jun 3, 2015 |
| 51115 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 542842019-09-18T12:50:00018 September 2019 12:50:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communication with Emergency Operations Facility ENS 541452019-07-03T15:26:0003 July 2019 15:26:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Offsite Notification Due to Radio Transmitter Out of Service ENS 536562018-10-09T05:00:0009 October 2018 05:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unplanned Loss of Emergency Response Equipment ENS 531182017-12-12T23:57:00012 December 2017 23:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unplanned Loss of Emergency Response Equipment ENS 527752017-05-30T14:29:00030 May 2017 14:29:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Operations Facility Integrated Computer System Data for Planned Maintenance ENS 511152015-06-01T15:26:0001 June 2015 15:26:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Unit 2 Ventilation Radiation Monitor Operability ENS 484482012-10-27T19:15:00027 October 2012 19:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Communications ENS 465882011-02-02T14:30:0002 February 2011 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Prompt Notification System (Pns) Emergency Sirens Due to a Loss of Power ENS 435952007-08-25T12:30:00025 August 2007 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Erds System and Portions of Plant Computer Out of Service for Planned Maintenance Outage ENS 430862007-01-10T18:35:00010 January 2007 18:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Landline Communications Capability Due to Cut Fiber Optic Cable ENS 425792006-05-16T14:45:00016 May 2006 14:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Disruption of Incoming and Outgoing Telephone Communciation Capability 2019-09-18T12:50:00 | |
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