ENS 51734: Difference between revisions

v t e ENS Event
01:58 Feb 15, 2016
Title	Automatic Reactor Trip on Main Generator Protection Trip
Event Description	This 4-hour and 8-hour notification is being made to report that Salem Unit 2 had an unplanned automatic reactor trip. The trip occurred because the Unit 2 main generator tripped on generator protection with reactor power greater than P-9 (49%). The cause of the generator protection trip that resulted in the reactor trip is unknown at this time. A troubleshooting team is being assembled to determine the exact cause for the generator protection actuation. All control rods inserted on the reactor trip. All ECCS and ESF systems functioned as expected. The motor driven and steam driven auxiliary feed pumps started as expected on steam generator low level. Salem Unit 2 is currently in mode 3. Reactor Coolant System pressure is at 2235 psig and temperature is 547 degrees Fahrenheit with decay heat removal via the main steam dumps and auxiliary feedwater systems. Unit 2 has no active technical specification action statement in effect requiring a lower mode of operation. No safety related equipment or major secondary plant equipment was tagged for maintenance prior to the event. There were no personnel injuries as a result of this event. There was no impact on Salem Unit 1. The licensee informed the NRC Resident Inspector and will inform the Lower Alloways Creek Township (LAC).

ENS 51734 +/-
Where
Salem New Jersey (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(3)(iv)(A), System Actuation
LER:	05000311/LER-2016-003
Time - Person (Reporting Time:+-2.75 h-0.115 days <br />-0.0164 weeks <br />-0.00377 months <br />)
Opened:	Jason Morgan 23:13 Feb 14, 2016
NRC Officer:	Steve Sandin
Last Updated:	Feb 14, 2016
51734 - NRC Website Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 51734\u003C/a\u003E - \u003Ca href=\"/Salem\" title=\"Salem\"\u003ESalem\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAutomatic Reactor Trip on Main Generator Protection Trip\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 51734 - Salem\n","link":"","lat":39.46302222222222,"lon":-75.53561388888889,"icon":"/w/images/c/cc/PSEG_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Salem with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2022-12-24T07:22:00 [Table view]
[ENS list for Salem]

@@ Line 16: / Line 16: @@
 | event date = 02/14/2016 20:58 EST
 | last update date = 02/14/2016
-| title = Automatic Reactor Trip On Main Generator Protection Trip
+| title = Automatic Reactor Trip on Main Generator Protection Trip
 | event text = This 4-hour and 8-hour notification is being made to report that Salem Unit 2 had an unplanned automatic reactor trip. The trip occurred because the Unit 2 main generator tripped on generator protection with reactor power greater than P-9 (49%). The cause of the generator protection trip that resulted in the reactor trip is unknown at this time. A troubleshooting team is being assembled to determine the exact cause for the generator protection actuation.
 All control rods inserted on the reactor trip. All ECCS and ESF systems functioned as expected. The motor driven and steam driven auxiliary feed pumps started as expected on steam generator low level.

Latest revision as of 20:45, 1 March 2018