ENS Event | |
|---|---|
20:03 Oct 1, 2012 | |
| Title | 60-Day Optional Telephonic Notification of Invalid System Actuation |
| Event Description | In accordance with 10CFR50.73(a)(2(iv)(A), this telephone notification reports an invalid actuation of the Unit 1 train A (1A) Emergency Diesel Generator (DG) on October 1, 2012, at 1403 hours0.0162 days <br />0.39 hours <br />0.00232 weeks <br />5.338415e-4 months <br />. At the time of the event Unit 1 was in Mode 5, Cold Shutdown. The 1A DG was undergoing a surveillance procedure that verifies a safety injection override signal when a technician actuated the incorrect under voltage relay which resulted in the inadvertent start of the 1A DG. The engine functioned successfully and ran unloaded, as expected. The cause is attributed to the technicians failing to verify they were actuating the correct relay. This condition was entered into the corrective action program.
The licensee notified the NRC Resident Inspector and the Illinois Department of Nuclear Safety. |
| Where | |
|---|---|
Byron  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+1093.92 h45.58 days <br />6.511 weeks <br />1.498 months <br />) | |
| Opened: | Robert Lawlor 10:58 Nov 16, 2012 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Nov 16, 2012 |
| 48511 - NRC Website
Loading map... | |
Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Cold Shutdown (0 %) |
| After | Cold Shutdown (0 %) |
WEEKMONTHYEARENS 485112012-10-01T20:03:0001 October 2012 20:03:00
[Table view]10 CFR 50.73(a)(1), Submit an LER 60-Day Optional Telephonic Notification of Invalid System Actuation ENS 477732012-02-02T02:00:0002 February 2012 02:00:00 10 CFR 50.73(a)(1), Submit an LER 60-Day Optional Report - Invalid System Actuation 2012-02-02T02:00:00 | |