ENS 41113: Difference between revisions
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| event date = 10/11/2004 07:25 CDT | | event date = 10/11/2004 07:25 CDT | ||
| last update date = 10/11/2004 | | last update date = 10/11/2004 | ||
| title = Loss | | title = Loss of Switchyard West Bus | ||
| event text = On 10/11/2004 at 0725 CDT, Wolf Creek Generating Station experienced a loss of the west bus in the switchyard causing a loss of power to the Startup Transformer and the 'B' Train 4.16 Kv ESFAS bus NB02. The 'B' Emergency Diesel Generator started and loaded, as expected, to supply power to the NB02 bus. The shutdown sequencer started the required components. Turbine load was reduced by the control room staff following the expected start of the steam driven auxiliary feedwater pump to maintain reactor thermal power below license limits. | | event text = On 10/11/2004 at 0725 CDT, Wolf Creek Generating Station experienced a loss of the west bus in the switchyard causing a loss of power to the Startup Transformer and the 'B' Train 4.16 Kv ESFAS bus NB02. The 'B' Emergency Diesel Generator started and loaded, as expected, to supply power to the NB02 bus. The shutdown sequencer started the required components. Turbine load was reduced by the control room staff following the expected start of the steam driven auxiliary feedwater pump to maintain reactor thermal power below license limits. | ||
Following the shutdown sequencer start of the 'B' Essential Service Water (ESW) pump it was noted the 'B' Control Room Air Conditioning unit condenser inlet end bell gasket had started leaking. The Control Room Air Conditioning unit was secured and ESW was isolated to and from the unit. All other equipment operated as required. | Following the shutdown sequencer start of the 'B' Essential Service Water (ESW) pump it was noted the 'B' Control Room Air Conditioning unit condenser inlet end bell gasket had started leaking. The Control Room Air Conditioning unit was secured and ESW was isolated to and from the unit. All other equipment operated as required. | ||
Latest revision as of 22:22, 1 March 2018
| Where | |
|---|---|
Wolf Creek  Kansas (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| Time - Person (Reporting Time:+1.17 h0.0488 days <br />0.00696 weeks <br />0.0016 months <br />) | |
| Opened: | Mark Jenkins 13:35 Oct 11, 2004 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Oct 11, 2004 |
| 41113 - NRC Website
| |