ENS 41168: Difference between revisions
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StriderTol (talk | contribs) (Created page by program invented by Mark Hawes) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
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| event date = 11/02/2004 11:05 PST | | event date = 11/02/2004 11:05 PST | ||
| last update date = 11/02/2004 | | last update date = 11/02/2004 | ||
| title = Unplanned Diesel Generator Start | | title = Unplanned Diesel Generator Start on a Valid Bus Undervoltage Signal | ||
| event text = On November 2, 2004, at 11:05 PST, with Diablo Canyon Unit 2 in Mode 6 (Refueling), Emergency Diesel Generator (EDG) 2-1 auto started on an unplanned actuation signal from a valid 4160 volt Bus G undervoltage signal. All equipment responded as designed. After the EDG started, the auxiliary feeder breaker opened, and loads were automatically sequenced onto the EDG. At the time of the event, test equipment was being connected in preparation for an instrumented manual test start of EDG 2-1 prior to maintenance. | | event text = On November 2, 2004, at 11:05 PST, with Diablo Canyon Unit 2 in Mode 6 (Refueling), Emergency Diesel Generator (EDG) 2-1 auto started on an unplanned actuation signal from a valid 4160 volt Bus G undervoltage signal. All equipment responded as designed. After the EDG started, the auxiliary feeder breaker opened, and loads were automatically sequenced onto the EDG. At the time of the event, test equipment was being connected in preparation for an instrumented manual test start of EDG 2-1 prior to maintenance. | ||
On November 2, 2004, at 1708 PST, operators transferred Bus G to auxiliary power and shutdown DG 2-1. | On November 2, 2004, at 1708 PST, operators transferred Bus G to auxiliary power and shutdown DG 2-1. | ||
Latest revision as of 22:22, 1 March 2018
| Where | |
|---|---|
Diablo Canyon  California (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| LER: | 05000323/LER-2004-001 |
| Time - Person (Reporting Time:+1.28 h0.0533 days <br />0.00762 weeks <br />0.00175 months <br />) | |
| Opened: | Jeff Kinisley 20:22 Nov 2, 2004 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Nov 2, 2004 |
| 41168 - NRC Website
| |