ENS 40406: Difference between revisions
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StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
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| event date = 12/22/2003 08:27 CST | | event date = 12/22/2003 08:27 CST | ||
| last update date = 12/22/2003 | | last update date = 12/22/2003 | ||
| title = Reactor Trip Due | | title = Reactor Trip Due to Main Turbine Trip | ||
| event text = At 0827 on 12/22/2003, Comanche Peak Unit Two (2) tripped due to a turbine trip > 50%. The turbine trip was caused by ingestion of a small metallic cover plate into the main generator exciter housing, as witnessed by maintenance personnel. A small fire ensued, which self-extinguished in five (5) minutes. An Aux Feedwater auto start (ESF actuation) occurred due to normal post-trip steam generator shrink. The turbine-driven and both motor-driven aux feedwater pumps started as designed. | | event text = At 0827 on 12/22/2003, Comanche Peak Unit Two (2) tripped due to a turbine trip > 50%. The turbine trip was caused by ingestion of a small metallic cover plate into the main generator exciter housing, as witnessed by maintenance personnel. A small fire ensued, which self-extinguished in five (5) minutes. An Aux Feedwater auto start (ESF actuation) occurred due to normal post-trip steam generator shrink. The turbine-driven and both motor-driven aux feedwater pumps started as designed. | ||
All control rods inserted into the core upon trip. The local electrical grid is stable. The number one (1) steam generator atmospheric relief valve cycled as designed upon the secondary pressure transient. | All control rods inserted into the core upon trip. The local electrical grid is stable. The number one (1) steam generator atmospheric relief valve cycled as designed upon the secondary pressure transient. | ||
Latest revision as of 22:24, 1 March 2018
| Where | |
|---|---|
Comanche Peak  Texas (NRC Region 4) | |
| 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:+-2.8 h-0.117 days <br />-0.0167 weeks <br />-0.00384 months <br />) | |
| Opened: | Richard Brabec 11:39 Dec 22, 2003 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Dec 22, 2003 |
| 40406 - NRC Website
| |
Comanche Peak with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |