ENS 44646: Difference between revisions
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| event date = 11/08/2008 08:35 EST | | event date = 11/08/2008 08:35 EST | ||
| last update date = 11/08/2008 | | last update date = 11/08/2008 | ||
| title = Osc Inoperable Due | | title = Osc Inoperable Due to Planned Maintenance on Motor Control Center | ||
| event text = Planned maintenance activities are being performed today (November 8, 2008) on the Hatch Nuclear Plant's 1C 4160V Bus (1R22-S003) Frame 5 under work order number 1041640301. The planned work will remove power from 1R24-SO34 and 1R24-SPO60 which will affect the Unit 1 Service Building and Unit 2 Service Building Annex. This will deenergize power to the Primary Operations Support Center (OSC) rendering the OSC non-functional. (TRM - Section T 3.10.1 EMERGENCY RESPONSE FACILITIES) during the performance of this work activity. | | event text = Planned maintenance activities are being performed today (November 8, 2008) on the Hatch Nuclear Plant's 1C 4160V Bus (1R22-S003) Frame 5 under work order number 1041640301. The planned work will remove power from 1R24-SO34 and 1R24-SPO60 which will affect the Unit 1 Service Building and Unit 2 Service Building Annex. This will deenergize power to the Primary Operations Support Center (OSC) rendering the OSC non-functional. (TRM - Section T 3.10.1 EMERGENCY RESPONSE FACILITIES) during the performance of this work activity. | ||
The specific work is to replace the breaker in frame 5 of 1C 4160V Bus (1R22-S-003) and perform routine preventative maintenance on 1R24-S034 and 2R24-S050 (Work Order # 1041641101) while they are de-energized to minimize future out of service time. This work activity is planned to be performed expeditiously and will be completed within 10 hours. If an emergency were to occur, it is estimated that power can be restored in approximately 1 hour. If an emergency condition occurs that requires activation of the OSC, the Alternate OSC in the Simulator Building will be used in accordance with plant procedure 73EP-EIP-021-0, Alternate Operations Support center (OSC) Activation, until power is restored. | The specific work is to replace the breaker in frame 5 of 1C 4160V Bus (1R22-S-003) and perform routine preventative maintenance on 1R24-S034 and 2R24-S050 (Work Order # 1041641101) while they are de-energized to minimize future out of service time. This work activity is planned to be performed expeditiously and will be completed within 10 hours. If an emergency were to occur, it is estimated that power can be restored in approximately 1 hour. If an emergency condition occurs that requires activation of the OSC, the Alternate OSC in the Simulator Building will be used in accordance with plant procedure 73EP-EIP-021-0, Alternate Operations Support center (OSC) Activation, until power is restored. | ||
Latest revision as of 22:13, 1 March 2018
| Where | |
|---|---|
Hatch  Georgia (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-4.48 h-0.187 days <br />-0.0267 weeks <br />-0.00614 months <br />) | |
| Opened: | Edwin Urquhart 09:06 Nov 8, 2008 |
| NRC Officer: | Joe O'Hara |
| Last Updated: | Nov 8, 2008 |
| 44646 - NRC Website
| |