ENS 40331
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ENS Event | |
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20:44 Sep 27, 2003 | |
Title | Invalid Partial Safety Injection Signal During Surveillance Testing at Ginna |
Event Description | On September 27, 2003, at 1544 hours0.0179 days <br />0.429 hours <br />0.00255 weeks <br />5.87492e-4 months <br /> Eastern Daylight Savings Time, while In a refueling outage, R.E. Ginna Nuclear Station experienced a momentary invalid partial Safety Injection (SI) signal to the "A" train. The invalid signal was the result of an error made while placing a jumper across a relay during a 24 month surveillance. The invalid partial SI signal caused the following systems to actuate: "A " train Containment Ventilation Isolation (CVI), "A" train Diesel Generator (DG), trip of MCC G1, full opening of Service Water (SW) AOV-4561 to the containment recirculation fans, and the opening of Residual Heat Removal (RHR) core deluge valve MOV-852A. Each individual actuation was complete, the "A" DG started and functioned as designed, and all support systems functioned properly. The individual slave timers fed from the SI relay did not actuate. The most probable cause of this was the momentary nature of the partial SI signal.
The licensee informed the NRC Resident Inspector. |
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:+1240.23 h51.676 days <br />7.382 weeks <br />1.699 months <br />) | |
Opened: | Richard Kapp 13:58 Nov 18, 2003 |
NRC Officer: | Chauncey Gould |
Last Updated: | Nov 18, 2003 |
40331 - 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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