ENS 54096: Difference between revisions
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| unit = 1 | | unit = 1 | ||
| utype = GE-6 | | utype = GE-6 | ||
| cfr = 10 CFR 50.72(b)(2)(iv)(B) | | cfr = 10 CFR 50.72(b)(2)(iv)(B), 10 CFR 50.72(b)(3)(iv)(A) | ||
| emergency class = Non Emergency | | emergency class = Non Emergency | ||
| notification date = 06/01/2019 03:15 | | notification date = 06/01/2019 03:15 | ||
| Line 15: | Line 15: | ||
| NRC officer = Jeffrey Whited | | NRC officer = Jeffrey Whited | ||
| event date = 05/31/2019 23:45 CDT | | event date = 05/31/2019 23:45 CDT | ||
| last update date = 06/ | | last update date = 06/10/2019 | ||
| title = Manual Reactor Scram Due to Low Reactor Water Level | | title = Manual Reactor Scram Due to Low Reactor Water Level | ||
| event text = At 2345 CDT at River Bend Station (RBS) Unit 1, a manual Reactor scram was inserted in anticipation of receiving an automatic Reactor Water Level 3 (9.7") scram due to the isolation of the 'B' Heater String with the 'A' Heater String already isolated. The 'B' heater string isolation caused loss of suction and subsequent trip of the running Feed Water Pumps 'A' and 'C'. All control rods fully inserted with no issues. Subsequently Reactor level was controlled by the Reactor Core Isolation Cooling (RCIC) system. Feed Water Pump 'C' was restored 4 minutes after the initial trip and the RCIC system secured. Currently RBS-1 is stable and is being cooled down using Turbine Bypass Valves. | | event text = At 2345 CDT at River Bend Station (RBS) Unit 1, a manual Reactor scram was inserted in anticipation of receiving an automatic Reactor Water Level 3 (9.7") scram due to the isolation of the 'B' Heater String with the 'A' Heater String already isolated. The 'B' heater string isolation caused loss of suction and subsequent trip of the running Feed Water Pumps 'A' and 'C'. All control rods fully inserted with no issues. Subsequently Reactor level was controlled by the Reactor Core Isolation Cooling (RCIC) system. Feed Water Pump 'C' was restored 4 minutes after the initial trip and the RCIC system secured. Currently RBS-1 is stable and is being cooled down using Turbine Bypass Valves. | ||
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The plant is currently under a normal shutdown electrical lineup. | The plant is currently under a normal shutdown electrical lineup. | ||
The licensee notified the NRC Resident Inspector. | The licensee notified the NRC Resident Inspector. | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/ | * * * UPDATE AT 1603 EDT ON 6/10/19 FROM ALFONSO CROEZE TO JEFF HERRERA * * * | ||
This amended event notification is being made to provide additional information that was not included in the original notification made on 6/1/19 at 0315 EDT. This event was reportable under 10 CFR 50.72(b)(3)(iv)(A) which was not annotated or described in the original report. | |||
Forty-two minutes after the Feed Water Pump 'C' was started, the pump tripped causing a Reactor Water Level 3 (9.7") RPS actuation. Feed Water was restored five minutes later using the Feed Water Pump 'A'. | |||
The NRC Resident Inspector has been notified. | |||
Notified the R4DO (Warnick). | |||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/20190611en.html#en54096 | |||
}}{{unit info | }}{{unit info | ||
| Unit = 1 | | Unit = 1 | ||
Latest revision as of 07:30, 11 June 2019
| Where | |
|---|---|
River Bend  Louisiana (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:+-1.5 h-0.0625 days <br />-0.00893 weeks <br />-0.00205 months <br />) | |
| Opened: | Alfonso Croeze 03:15 Jun 1, 2019 |
| NRC Officer: | Jeffrey Whited |
| Last Updated: | Jun 10, 2019 |
| 54096 - NRC Website
| |
River Bend with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |