ENS 41595: Difference between revisions

v t e ENS Event
15:53 Apr 13, 2005
Title	Valid Rps Actuation Due to an Invalid Atws Logic Actuation
Event Description	At 0953 [CDT] on 04/13/2005 with Unit 2 in MODE 4 [and] all Control Rods inserted, a valid RPS Actuation (Reactor SCRAM Signal resulting from the filling of the SCRAM DISCHARGE VOLUME) was received as a result of an invalid ATWS initiation. This occurred during the performance of 2-SR-3.3.5.2.4(FT) RCIC SYSTEM LOGIC FUNCTIONAL TEST. Further review of the test revealed that a Volt/Ohm Meter was attached across contacts in the ATWS LOGIC that conflicted with the RCIC Surveillance and apparently resulted in the ATWS initiation and the filling of the SCRAM DISCHARGE VOLUME. This event is reportable as an 8-hour Non-Emergency Notification along with a 60-day written report in accordance with 10CFR50.72 (b)(3)(iv)(A) & 10CFR50.73(a)(2)(iv)(A) as 'Any event or condition that results in valid actuation of RPS & PCIS as described in (1) & (2) below.' The licensee notified the NRC Resident Inspector.

ENS 41595 +/-
Where
Browns Ferry Alabama (NRC Region 2)
Reporting

10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+2.43 h0.101 days <br />0.0145 weeks <br />0.00333 months <br />)
Opened:	Donald Smith 18:19 Apr 13, 2005
NRC Officer:	Jeff Rotton
Last Updated:	Apr 13, 2005
41595 - 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 41595\u003C/a\u003E - \u003Ca href=\"/Browns_Ferry\" title=\"Browns Ferry\"\u003EBrowns Ferry\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EValid Rps Actuation Due to an Invalid Atws Logic Actuation\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 41595 - Browns Ferry\n","link":"","lat":34.70418333333333,"lon":-87.11844722222222,"icon":"/w/images/c/ce/Tennessee_Valley_Authority_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Browns Ferry with 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2024-08-30T15:51:00 [Table view]
[ENS list for Browns Ferry]

@@ Line 16: / Line 16: @@
 | event date = 04/13/2005 09:53 CST
 | last update date = 04/13/2005
-| title = Valid Rps Actuation Due To An Invalid Atws Logic Actuation
+| title = Valid Rps Actuation Due to an Invalid Atws Logic Actuation
 | event text = At 0953 [CDT] on 04/13/2005 with Unit 2 in MODE 4 [and] all Control Rods inserted, a valid RPS Actuation (Reactor SCRAM Signal resulting from the filling of the SCRAM DISCHARGE VOLUME) was received as a result of an invalid ATWS initiation. This occurred during the performance of 2-SR-3.3.5.2.4(FT) RCIC SYSTEM LOGIC FUNCTIONAL TEST. Further review of the test revealed that a Volt/Ohm Meter was attached across contacts in the ATWS LOGIC that conflicted with the RCIC Surveillance and apparently resulted in the ATWS initiation and the filling of the SCRAM DISCHARGE VOLUME.
 This event is reportable as an 8-hour Non-Emergency Notification along with a 60-day written report in accordance with 10CFR50.72 (b)(3)(iv)(A) & 10CFR50.73(a)(2)(iv)(A) as  'Any event or condition that results in valid actuation of RPS & PCIS as described in (1) & (2) below.'

Latest revision as of 21:21, 1 March 2018