ENS 50231
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ENS Event | |
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17:20 May 8, 2014 | |
Title | 60-Day Telephonic Notification of Invalid Specified System Actuation |
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 'B' on May 8, 2014 during the performance of 480v safeguards Bus 16 Under Voltage (UV) testing. Emergency AC Electrical Power system, including Emergency Diesel Generators, is a system named in 50.73(a)(2)(iv)(B).
During testing of the Bus 16 UV cabinet, a human performance error resulted in the simultaneous auto start of the 'B' Emergency Diesel Generator and trip of the Bus 16 normal supply breaker. This is defined as an 'invalid signal' in that the 'B' Emergency Diesel Generator did not start as the result of an actual UV condition on Bus 16. This start signal is considered an INVALID signal with respect to 50.73(a)(2)(iv)(A), however the system was not fully removed from service. The 'A' train was not affected by this event. The actuation was considered complete since all necessary components responded as would have been expected if there had been a valid UV signal. The NRC Resident lnspector was notified. |
Where | |
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Ginna New York (NRC Region 1) | |
Reporting | |
10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
Time - Person (Reporting Time:+1194.03 h49.751 days <br />7.107 weeks <br />1.636 months <br />) | |
Opened: | Dale Bisaillon 11:22 Jun 27, 2014 |
NRC Officer: | Howie Crouch |
Last Updated: | Jun 27, 2014 |
50231 - NRC Website
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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 | |
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