ENS 40827: Difference between revisions
Jump to navigation
Jump to search
StriderTol (talk | contribs) (Created page by program invented by Mark Hawes) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
||
| Line 16: | Line 16: | ||
| event date = 06/18/2004 06:50 EDT | | event date = 06/18/2004 06:50 EDT | ||
| last update date = 06/21/2004 | | last update date = 06/21/2004 | ||
| title = Unusual Event Declared Due | | title = Unusual Event Declared Due to a Main Transformer Fire Lasting Fire Longer than 10 Minutes. | ||
| event text = Main transformer fire caused a load rejection/automatic reactor scram. All rods fully inserted into the core. Offsite power is being supplied through their startup transformers. Offsite fire department, Vernon, responded with three fire trucks and one ambulance. Main transformer fire was extinguished at 0751 EDT. There were no personnel injuries. All emergency core cooling systems and their emergency diesel generators are fully operable if needed. Reactor vessel water level is being maintained at its proper level via the condensate and feedwater system. Both recirculation pumps tripped. Licensee is looking into the reason why the recirculation pumps tripped. There was no release of radioactivity from the plant. Licensee notified the states of New Hampshire, Vermont , Massachusetts and local surrounding counties of the declaration of an unusual event. | | event text = Main transformer fire caused a load rejection/automatic reactor scram. All rods fully inserted into the core. Offsite power is being supplied through their startup transformers. Offsite fire department, Vernon, responded with three fire trucks and one ambulance. Main transformer fire was extinguished at 0751 EDT. There were no personnel injuries. All emergency core cooling systems and their emergency diesel generators are fully operable if needed. Reactor vessel water level is being maintained at its proper level via the condensate and feedwater system. Both recirculation pumps tripped. Licensee is looking into the reason why the recirculation pumps tripped. There was no release of radioactivity from the plant. Licensee notified the states of New Hampshire, Vermont , Massachusetts and local surrounding counties of the declaration of an unusual event. | ||
The NRC Resident Inspector was on scene when the event occurred. | The NRC Resident Inspector was on scene when the event occurred. | ||
Latest revision as of 21:23, 1 March 2018
| Where | |
|---|---|
| Vermont Yankee File:NorthStar Vermont Yankee icon.png Vermont (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| LER: | 05000271/LER-2004-003 Regarding Automatic Reactor Scram Due to a Main Generator Trip as a Result of an Iso-Phase Bus Duct Two-Phase Electrical Fault |
| Time - Person (Reporting Time:+-3.03 h-0.126 days <br />-0.018 weeks <br />-0.00415 months <br />) | |
| Opened: | Brian Pichette 07:48 Jun 18, 2004 |
| NRC Officer: | John Mackinnon |
| Last Updated: | Jun 21, 2004 |
| 40827 - NRC Website
| |
