ENS 49575
From kanterella
Revision as of 21:52, 1 March 2018 by StriderTol (talk | contribs) (Created page by program invented by StriderTol)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
ENS Event | |
---|---|
05:01 Nov 24, 2013 | |
Title | Momentary Loss of Reactor Building Ventilation |
Event Description | On 11/24/2013 at 00:00:54 seconds [EST], Reactor Building ventilation tripped due to low outside air temperature. At 00:01:42 seconds, Secondary Containment Differential pressure went positive, with a maximum of +0.08 inches WC [water column]. This is a loss of Secondary Containment function. At 00:02:30 seconds, Standby Gas Treatment System was started and Secondary Containment pressure then decreased to <0 inches WC at 00:03:18 seconds. All the above data parameters were taken from the Division 2 Reactor Building Differential pressure recorder.
Secondary Containment pressure is stable with differential pressure negative <-0.30 inches WC. The loss of Secondary Containment function is reportable under 10CFR 50.72(b)(3)(v)(c) as an event or condition that could have prevented the fulfillment of a safety function needed to control the release of radioactive material. Technical Specification requirement are to maintain secondary containment pressure <-0.125 WC. No actual radiation release occurred during the event. The licensee notified the NRC Resident Inspector. |
Where | |
---|---|
Fermi ![]() Michigan (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material | |
Time - Person (Reporting Time:+-2.12 h-0.0883 days <br />-0.0126 weeks <br />-0.0029 months <br />) | |
Opened: | Mark Eghigian 02:54 Nov 24, 2013 |
NRC Officer: | Mark Abramovitz |
Last Updated: | Nov 24, 2013 |
49575 - NRC Website
Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 49575\u003C/a\u003E - \u003Ca href=\"/Fermi\" title=\"Fermi\"\u003EFermi\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EMomentary Loss of Reactor Building Ventilation\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 49575 - Fermi\n","link":"","lat":41.96295277777778,"lon":-83.25779444444444,"icon":"/w/images/5/5b/DTE_Energy_icon.png"}],"imageoverlays":null} | |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_49575&oldid=422665"