ENS 47294
From kanterella
Jump to navigation
Jump to search
ENS Event | |
---|---|
19:00 Sep 26, 2011 | |
Title | New River Hydraulic Analysis Raises Maximum Flood Level |
Event Description | TMI new river analysis indicates level above existing UFSAR [Updated Final Safety Analysis Report] flood analysis. At about 15:00 [EDT] on September 26, 2011, a revised River Stage Discharge Analysis was completed and concluded that the Probable Maximum Flood (PMF) water level is higher than previously described in the safety analysis report. This unanalyzed condition is reportable in accordance with 10 CFR 50.72(b)(3)(ii)(B).
Actions to protect the plant for the higher PMF river level have been implemented. The flood barrier gates that protect safety related equipment have been modified to accommodate the revised river levels. No onsite flood water levels have occurred that could potentially challenge the existing flood barrier system. The licensee notified the NRC Resident Inspector. The licensee will be making a courtesy media notification. |
Where | |
---|---|
Three Mile Island Pennsylvania (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
Time - Person (Reporting Time:+-3.85 h-0.16 days <br />-0.0229 weeks <br />-0.00527 months <br />) | |
Opened: | Doug Gorse 15:09 Sep 26, 2011 |
NRC Officer: | Mark Abramovitz |
Last Updated: | Sep 26, 2011 |
47294 - 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 47294\u003C/a\u003E - \u003Ca href=\"/Three_Mile_Island\" title=\"Three Mile Island\"\u003EThree Mile Island\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ENew River Hydraulic Analysis Raises Maximum Flood Level\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 47294 - Three Mile Island\n","link":"","lat":40.154719444444446,"lon":-76.72520833333333,"icon":"/w/images/b/be/Constellation_icon.png"}],"imageoverlays":null} | |
Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 531062017-12-06T14:58:0006 December 2017 14:58:00
[Table view]10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Diesel Fuel Oil Tank Supply Non-Conforming with Licensing Basis for Tornado Generated Missiles ENS 501082014-05-12T14:20:00012 May 2014 14:20:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Postulated Hot Short Fire Event That Could Adversely Impact Safe Shutdown Equipment ENS 500592014-04-25T15:13:00025 April 2014 15:13:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Postulated Hot Short Fire Event That Could Adversely Impact Safe Shutdown Equipment ENS 472942011-09-26T19:00:00026 September 2011 19:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition New River Hydraulic Analysis Raises Maximum Flood Level ENS 431392007-02-02T18:50:0002 February 2007 18:50:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Low Pressure Injection (Lpi) Net Positive Suction Head Flow Requirements Not Met for Certain Accident Sequences ENS 425272006-04-25T17:30:00025 April 2006 17:30:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition - Control Logic Error ENS 416632005-05-03T17:10:0003 May 2005 17:10:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Appendix R Fire Scenario Involving Multiple High Impedance Faults ENS 414442005-02-16T01:55:00016 February 2005 01:55:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Possible Failure to Meet Design Basis Requirements of Positive Pressure in the Control Tower Envelope Following a Design Basis Accident. 2017-12-06T14:58:00 | |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_47294&oldid=87197"