ENS 46229: Difference between revisions
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| event date = 09/03/2010 10:58 EDT | | event date = 09/03/2010 10:58 EDT | ||
| last update date = 09/03/2010 | | last update date = 09/03/2010 | ||
| event text = | | title = Unit 2 Experienced an Automatic Reactor Trip Due to High Steam Generator Level | ||
| event text = On September 3, 2010, at approximately 1058 hrs., Indian Point Unit 2 automatically tripped from 41% power due to High Steam Generator Level. At the time of the trip, Unit 2 was performing a power reduction to take the unit offline for a planned maintenance outage. Unit 2 is currently stable in Mode 3. All automatic actions occurred as required. All control rods fully inserted with the exception of rod H-8 - which indicates 26 inches withdrawn. No primary or steam generator safety or relief valves lifted. The motor driven auxiliary feedwater pumps automatically started on low steam generator level as designed. Decay heat removal is via the steam generators to the main condenser. Offsite power is available and supplying all safeguards busses. | |||
On September 3, 2010, at approximately 1058 hrs., Indian Point Unit 2 automatically tripped from 41% power due to High Steam Generator Level. At the time of the trip, Unit 2 was performing a power reduction to take the unit offline for a planned maintenance outage. Unit 2 is currently stable in Mode 3. All automatic actions occurred as required. All control rods fully inserted with the exception of rod H-8 - which indicates 26 inches withdrawn. No primary or steam generator safety or relief valves lifted. The motor driven auxiliary feedwater pumps automatically started on low steam generator level as designed. Decay heat removal is via the steam generators to the main condenser. Offsite power is available and supplying all safeguards busses. | |||
The cause of the trip and rod H-8 position indication are under investigation. | The cause of the trip and rod H-8 position indication are under investigation. | ||
Unit 3 is unaffected and remains in Mode 1 at 100% power. | Unit 3 is unaffected and remains in Mode 1 at 100% power. | ||
The NRC Resident Inspector has been notified. | The NRC Resident Inspector has been notified. | ||
Offsite notification was made to the State of New York. | Offsite notification was made to the State of New York. | ||
No press releases are planned. | No press releases are planned. | ||
| URL = http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2010/20100907en.html#en46229 | | URL = http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2010/20100907en.html#en46229 |
Latest revision as of 01:53, 24 February 2020
Where | |
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Indian Point New York (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
Time - Person (Reporting Time:+-1.78 h-0.0742 days <br />-0.0106 weeks <br />-0.00244 months <br />) | |
Opened: | John Dignam 13:11 Sep 3, 2010 |
NRC Officer: | Eric Simpson |
Last Updated: | Sep 3, 2010 |
46229 - NRC Website
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