ENS 52534: Difference between revisions

v t e ENS Event
20:45 Feb 3, 2017
Title	Unit 1 Manual Reactor Trip Due to Loop 1 Msiv Starting to Fail Closed
Event Description	At 1545 EST on 2/3/17, Vogtle Unit 1 was manually tripped from 100% power when loop 1 Main Steam Isolation Valve (MSIV) started to fail closed. Non-Safety Related 4160V bus 1NA01 failed to transfer to alternate incoming power supply automatically and was successfully manually energized. All control rods fully inserted and AFW [Auxiliary Feedwater] and FWI [Feedwater Isolation] actuated as expected. Unit 1 is in Mode 3 and stable with decay heat being removed by AFW. The licensee informed the NRC Resident Inspector.

ENS 52534 +/-
Where
Vogtle Georgia (NRC Region 2)
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:+-1.82 h-0.0758 days <br />-0.0108 weeks <br />-0.00249 months <br />)
Opened:	Matthew Norris 18:56 Feb 3, 2017
NRC Officer:	Steve Sandin
Last Updated:	Feb 3, 2017
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v • d • e

v t e Emergency Notification System
Vogtle with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2024-09-17T05:27:00 [Table view]
[ENS list for Vogtle]

@@ Line 16: / Line 16: @@
 | event date = 02/03/2017 15:45 EST
 | last update date = 02/03/2017
-| title = Unit 1 Manual Reactor Trip Due To Loop 1 Msiv Starting To Fail Closed
+| title = Unit 1 Manual Reactor Trip Due to Loop 1 Msiv Starting to Fail Closed
 | event text = At 1545 EST on 2/3/17, Vogtle Unit 1 was manually tripped from 100% power when loop 1 Main Steam Isolation Valve (MSIV) started to fail closed. Non-Safety Related 4160V bus 1NA01 failed to transfer to alternate incoming power supply automatically and was successfully manually energized.
 All control rods fully inserted and AFW [Auxiliary Feedwater] and FWI [Feedwater Isolation] actuated as expected.

Latest revision as of 21:43, 1 March 2018