ENS 48673: Difference between revisions

v t e ENS Event
00:05 Jan 15, 2013
Title	Automatic Reactor Scram from 100% Power Due to a Turbine/Generator Trip
Event Description	Actuation of RPS [Reactor Protection System] with reactor critical. The Reactor Scram occurred at 1805 [CST] 01/14/13 from 100% CTP [Core Thermal Power]. The cause of scram appears to be a Turbine Generator Trip. 05-S-01-EP-2 RPV Control, Reactor Scram ONEP [Off Normal Event Procedure] 05-1-02-I-1, and Turbine and Generator Trips ONEP 05-1-02-1-2 were entered to mitigate the transient with all systems responding as designed. No loss of offsite or ESF power occurred. No ECCS initiation signals were reached and no ECCS or Diesel Generator initiation occurred. All control rods are fully inserted. MSIVs remained open and SRVs lifted and reseated as designed. Currently, reactor water level is being maintained by the Condensate and Feedwater system in the normal band and reactor pressure is being controlled via Main Turbine Bypass valves to the main condenser. There are no challenges to Primary or Secondary Containment at this time. The licensee notified the NRC Resident Inspector.

ENS 48673 +/-
Where
Grand Gulf Mississippi (NRC Region 4)
Reporting

10 CFR 50.72(b)(2)(iv)(B), RPS Actuation
Time - Person (Reporting Time:+-2.02 h-0.0842 days <br />-0.012 weeks <br />-0.00277 months <br />)
Opened:	Hardy Farris 22:04 Jan 14, 2013
NRC Officer:	Vince Klco
Last Updated:	Jan 14, 2013
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v • d • e

v t e Emergency Notification System
Grand Gulf with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation
WEEKMONTHYEAR2024-11-10T09:37:00 [Table view]
[ENS list for Grand Gulf]

@@ Line 16: / Line 16: @@
 | event date = 01/14/2013 18:05 CST
 | last update date = 01/14/2013
-| title = Automatic Reactor Scram From 100% Power Due To A Turbine/Generator Trip
+| title = Automatic Reactor Scram from 100% Power Due to a Turbine/Generator Trip
 | event text = Actuation of RPS [Reactor Protection System] with reactor critical. The Reactor Scram occurred at 1805 [CST] 01/14/13 from 100% CTP [Core Thermal Power]. The cause of scram appears to be a Turbine Generator Trip.
 -S-01-EP-2 RPV Control, Reactor Scram ONEP [Off Normal Event Procedure] 05-1-02-I-1, and Turbine and Generator Trips ONEP 05-1-02-1-2 were entered to mitigate the transient with all systems responding as designed. No loss of offsite or ESF power occurred. No ECCS initiation signals were reached and no ECCS or Diesel Generator initiation occurred.

Latest revision as of 21:02, 1 March 2018