ENS 40474: Difference between revisions
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| event date = 01/24/2004 00:37 CST | | event date = 01/24/2004 00:37 CST | ||
| last update date = 01/24/2004 | | last update date = 01/24/2004 | ||
| title = Auto Reactor Scram Due | | title = Auto Reactor Scram Due to Auto Main Turbine Trip | ||
| event text = At 0322 EST on 01/24/03, Licensee reported that at 0037 CST on 01/24/03, the Unit 3 reactor auto scrammed from 96% power due to an auto main turbine trip while performing weekly main turbine testing. All control rods inserted completely. Steam is being dumped to the main condenser. PCIS Group 2 (Containment Ventilation System) and Group 3 (Shutdown Cooling System) isolated as expected due to reactor vessel level decrease following the scram. Reactor vessel level is being maintained at normal level (30 inches) with the reactor feedwater system. Reactor pressure is 900 psig and moderator temperature is 530 degrees F. All systems functioned as expected. Unit 3 is in Condition 3 (Hot Shutdown). The cause of the main turbine trip is under investigation. This event had no effect on Unit 2. The licensee notified the NRC Resident Inspector. | | event text = At 0322 EST on 01/24/03, Licensee reported that at 0037 CST on 01/24/03, the Unit 3 reactor auto scrammed from 96% power due to an auto main turbine trip while performing weekly main turbine testing. All control rods inserted completely. Steam is being dumped to the main condenser. PCIS Group 2 (Containment Ventilation System) and Group 3 (Shutdown Cooling System) isolated as expected due to reactor vessel level decrease following the scram. Reactor vessel level is being maintained at normal level (30 inches) with the reactor feedwater system. Reactor pressure is 900 psig and moderator temperature is 530 degrees F. All systems functioned as expected. Unit 3 is in Condition 3 (Hot Shutdown). The cause of the main turbine trip is under investigation. This event had no effect on Unit 2. The licensee notified the NRC Resident Inspector. | ||
| URL = http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2004/20040126en.html#en40474 | | URL = http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2004/20040126en.html#en40474 | ||
Latest revision as of 22:24, 1 March 2018
| Where | |
|---|---|
Dresden  Illinois (NRC Region 3) | |
| 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:+-3.25 h-0.135 days <br />-0.0193 weeks <br />-0.00445 months <br />) | |
| Opened: | Dan Daly 03:22 Jan 24, 2004 |
| NRC Officer: | Dick Jolliffe |
| Last Updated: | Jan 24, 2004 |
| 40474 - NRC Website
| |
Dresden with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |