ENS 43121
From kanterella
Revision as of 22:17, 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 | |
---|---|
23:17 Jan 25, 2007 | |
Title | Technical Specification Shutdown Due to Dropped Control Element Assembly (Cea) |
Event Description | Notification of shutdown required by the Technical Specifications per 10CFR50.72(b)(2)(i). Arkansas Nuclear One Unit 2 is shut down in Mode 3 (Hot Standby) due to Control Element Assembly misalignment as required by Technical Specification 3.1.3.1.d (All CEAs shall be OPERABLE with each CEA of a given group positioned within 7 inches, indicated position, of all other CEAs in its group). CEA #35 dropped to the bottom of the core due to power supply breaker trip during maintenance and was unable to be recovered within the allowed time. All rods were verified to trip normally as part of the controlled shutdown."
The reactor was manually tripped from approx. 20% power. The reactor trip was preplanned. The NRC Resident Inspector and the county were notified of this event by the licensee. Licensee will also notify the State of this event. |
Where | |
---|---|
Arkansas Nuclear Arkansas (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
Time - Person (Reporting Time:+-3.1 h-0.129 days <br />-0.0185 weeks <br />-0.00425 months <br />) | |
Opened: | James Crabill 20:11 Jan 25, 2007 |
NRC Officer: | John Mackinnon |
Last Updated: | Jan 25, 2007 |
43121 - 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 43121\u003C/a\u003E - \u003Ca href=\"/Arkansas_Nuclear\" title=\"Arkansas Nuclear\"\u003EArkansas Nuclear\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ETechnical Specification Shutdown Due to Dropped Control Element Assembly (Cea)\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 43121 - Arkansas Nuclear\n","link":"","lat":35.31055555555555,"lon":-93.23084444444444,"icon":"/w/images/7/79/Entergy_icon.png"}],"imageoverlays":null} | |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | Yes, Manual Scram |
Before | Power Operation (45 %) |
After | Hot Standby (0 %) |
WEEKMONTHYEARENS 522672016-09-28T12:45:00028 September 2016 12:45:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unit 2 Shutdown Required by Technical Specifications Due to Inoperable Diesel Generator ENS 461972010-08-23T08:30:00023 August 2010 08:30:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Shutdown Due to Planned Emergency Diesel Generator Outage Exceeding Allowed Time ENS 431212007-01-25T23:17:00025 January 2007 23:17:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Shutdown Due to Dropped Control Element Assembly (Cea) ENS 429492006-10-30T19:04:00030 October 2006 19:04:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Alert Declaration Due to Electrical Fire Affecting One Esf Train 2016-09-28T12:45:00 | |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_43121&oldid=427075"