ENS Event | |
|---|---|
05:00 Dec 7, 2005 | |
| Title | Invalid Specified System Actuation - "A" Auxiliary Feedwater |
| Event Description | This report is being made in lieu of an LER per the guidance of 10CFR50.73(a)(2)(iv)(A). The `A' train Motor Driven Auxiliary Feedwater pump received an invalid auto-start signal due to a failed safeguards driver board in the A train Solid State Protection System (SSPS). This was a complete actuation of the 'A' train of auxiliary feedwater, and all components functioned as designed. The pump was manually secured and no other systems were affected. The plant entered an 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> LCO for an inoperable train of SSPS. The safeguards driver board was replaced and the plant exited the LCO. Investigation of the cause of the card failure is in progress.
The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Farley  Alabama (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+347.45 h14.477 days <br />2.068 weeks <br />0.476 months <br />) | |
| Opened: | Richard Wells 16:27 Dec 21, 2005 |
| NRC Officer: | Bill Gott |
| Last Updated: | Dec 21, 2005 |
| 42216 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (86 %) |
| After | Power Operation (86 %) |
WEEKMONTHYEARENS 489782013-02-28T20:36:00028 February 2013 20:36:00
[Table view]10 CFR 50.73(a)(1), Submit an LER Inadvertent Actuation of the Turbine Driven Auxiliary Feedwater Pump ENS 474752011-11-03T09:48:0003 November 2011 09:48:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of a Safety Injection Valve ENS 471572011-08-06T15:55:0006 August 2011 15:55:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of Motor Driven Auxiliary Feedwater Pump ENS 422162005-12-07T05:00:0007 December 2005 05:00:00 10 CFR 50.73(a)(1), Submit an LER Invalid Specified System Actuation - "a" Auxiliary Feedwater 2013-02-28T20:36:00 | |