ENS 47544: Difference between revisions
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| event date = 12/21/2011 17:57 CST | | event date = 12/21/2011 17:57 CST | ||
| last update date = 12/21/2011 | | last update date = 12/21/2011 | ||
| title = Unusual Event - Hydrogen Leak | | title = Unusual Event - Hydrogen Leak in Turbine Building | ||
| event text = At 1641 CST, during preparations to synchronize the generator, hydrogen pressure began to lower. Personnel were dispatched to identify the source of the leak. At 1752 CST reports from personnel in the turbine building identified high hydrogen levels and the turbine building was evacuated. An Unusual Event [HU7] was declared at 1757 CST and state notification was completed at 1809 CST. Turbine building roof vents were opened to ventilate the turbine building and all elevations were verified to be clear of hydrogen. Access to the turbine building was restored. | | event text = At 1641 CST, during preparations to synchronize the generator, hydrogen pressure began to lower. Personnel were dispatched to identify the source of the leak. At 1752 CST reports from personnel in the turbine building identified high hydrogen levels and the turbine building was evacuated. An Unusual Event [HU7] was declared at 1757 CST and state notification was completed at 1809 CST. Turbine building roof vents were opened to ventilate the turbine building and all elevations were verified to be clear of hydrogen. Access to the turbine building was restored. | ||
The Unusual Event was terminated at 1838 CST. | The Unusual Event was terminated at 1838 CST. | ||
Latest revision as of 21:05, 1 March 2018
| Where | |
|---|---|
Clinton  Illinois (NRC Region 3) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-4.02 h-0.168 days <br />-0.0239 weeks <br />-0.00551 months <br />) | |
| Opened: | Dale Shelton 19:56 Dec 21, 2011 |
| NRC Officer: | John Knoke |
| Last Updated: | Dec 21, 2011 |
| 47544 - NRC Website
| |