ENS 46624
ENS Event | |
|---|---|
05:00 Dec 29, 2010 | |
| Title | Invalid System Actuation Due to Operator Error |
| Event Description | This report is being made per paragraphs 50.73(a)(1) and 50.73(a)(2)(iv)(A) to address an actuation of Emergency Diesel Generator 'A' on 12/29/10 while performing a Diesel Generator shutdown. Emergency AC Electrical Power system including Emergency Diesel Generators is a system named in 50.73(a)(2)(iv)(6).
Emergency Diesel Generator 'A' was coasting down following a normal shutdown in accordance with steps in a routine surveillance test procedure. A manual reset was performed prior to verification that the generator had stopped rolling causing it to return to idle speed and continue to run. A procedure compliance error occurred during the conduct of the test. The control room individual did not request verification that the diesel generator had stopped rolling prior to pushing the reset pushbuttons. This is considered an INVALID signal with respect to 50.73(a)(2)(iv)(A). However the system was not fully removed from service [i.e. the diesel was not considered to be in a testing mode at the time of the event]. The re-start only affected Emergency Diesel Generator 'A'. Specific information required per NUREG-1022: a. The specific train(s) and system(s) that were actuated: The specific train(s) .and system(s) was Emergency Diesel Generator 'A'. The 'B' train was not affected by this event. b. Whether each train actuation was complete or partial: The actuation was considered complete (i.e. all necessary components responded to the reset signal as expected under the actual field conditions). c. Whether or not the system started and functioned successfully: Emergency Diesel Generator 'A' started and operated successfully until secured by Operations personnel. The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Ginna  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+1228 h51.167 days <br />7.31 weeks <br />1.682 months <br />) | |
| Opened: | Kevin Mclaughlin 09:00 Feb 18, 2011 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Feb 18, 2011 |
| 46624 - 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 46624\u003C/a\u003E - \u003Ca href=\"/Ginna\" title=\"Ginna\"\u003EGinna\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EInvalid System Actuation Due to Operator Error\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 46624 - Ginna\n","link":"","lat":43.277569444444445,"lon":-77.30936388888888,"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 556092021-10-17T18:58:00017 October 2021 18:58:00
[Table view]10 CFR 50.73(a)(1), Submit an LER 60 Day Optional Telephonic Notification for Invalid Specified Actuation of Containment Isolation Train ENS 516042015-10-21T05:29:00021 October 2015 05:29:00 10 CFR 50.73(a)(1), Submit an LER Diesel Generator Start Due to Invalid Signal ENS 502312014-05-08T17:20:0008 May 2014 17:20:00 10 CFR 50.73(a)(1), Submit an LER 60-Day Telephonic Notification of Invalid Specified System Actuation ENS 470942011-06-03T04:39:0003 June 2011 04:39:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of Emergency Diesel Generator ENS 469662011-04-25T01:44:00025 April 2011 01:44:00 10 CFR 50.73(a)(1), Submit an LER 60 Day Optional Notification of Invalid Start of Emergency Diesel Generator. ENS 466242010-12-29T05:00:00029 December 2010 05:00:00 10 CFR 50.73(a)(1), Submit an LER Invalid System Actuation Due to Operator Error ENS 443202008-05-10T01:32:00010 May 2008 01:32:00 10 CFR 50.73(a)(1), Submit an LER Invalid Auxiliary Feedwater System Actuation ENS 403322003-10-08T07:16:0008 October 2003 07:16:00 10 CFR 50.73(a)(1), Submit an LER Invalid Safety Injection Signal During Surveillance Testing at Ginna ENS 403312003-09-27T20:44:00027 September 2003 20:44:00 10 CFR 50.73(a)(1), Submit an LER Invalid Partial Safety Injection Signal During Surveillance Testing at Ginna 2021-10-17T18:58:00 | |