ENS 53699
From kanterella
Revision as of 07:30, 29 October 2018 by StriderTol (talk | contribs) (Created page by program invented by StriderTol)
ENS Event | |
---|---|
04:00 Oct 28, 2018 | |
Title | Non Essential Service Water Inoperable |
Event Description | During the performance of Service Water Essential header swap, SWN-6 (Supply to Turbine Building Oil Coolers) valve stem became disconnected from its gear box at 85% open and could not be operated. Therefore, the non-essential service water system was inoperable. LCO 3.0.3 was entered at 0930 [EDT] with required actions to be in Mode 3 in 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />, Mode 4 in 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> and Mode 5 in 37 hours4.282407e-4 days <br />0.0103 hours <br />6.117725e-5 weeks <br />1.40785e-5 months <br />. Repair efforts were successful at shutting SWN-6, and LCO 3.0.3 was exited at 1305 [EDT] before adding any negative reactivity in support of shutdown. ('TS Required S/D' box not checked.)
This condition constituted a loss of safety function which requires an 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> report [in accordance with] IAW 50.72(b)(3)(v)(B): Without the ability to close SWN-6, the non-seismic portion of the conventional Service Water System could not be isolated as required in the event of either a seismic event or as required in the EOPs. The nonessential service water system is required to support the recirculation phase post [Design Basis Accident] DBA for accident mitigation. The licensee notified the NRC Resident Inspector and the State of New York. |
Where | |
---|---|
Indian Point New York (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat | |
Time - Person (Reporting Time:+11.17 h0.465 days <br />0.0665 weeks <br />0.0153 months <br />) | |
Opened: | Michael Weeden 15:10 Oct 28, 2018 |
NRC Officer: | Karen Cotton |
Last Updated: | Oct 28, 2018 |
53699 - 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 53699\u003C/a\u003E - \u003Ca href=\"/Indian_Point\" title=\"Indian Point\"\u003EIndian Point\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ENon Essential Service Water Inoperable\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 53699 - Indian Point\n","link":"","lat":41.26799722222222,"lon":-73.9514,"icon":"/w/images/7/79/Entergy_icon.png"}],"imageoverlays":null} | |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Indian Point with 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
WEEKMONTHYEARENS 536992018-10-28T04:00:00028 October 2018 04:00:00
[Table view]10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Non Essential Service Water Inoperable ENS 535892018-09-07T04:00:0007 September 2018 04:00:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Technical Specification Required Shutdown ENS 528362017-06-30T05:30:00030 June 2017 05:30:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat Condensate Storage Tank Declared Inoperable ENS 527512017-05-14T13:30:00014 May 2017 13:30:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Single Flow Barrier Access Point Found Unbolted ENS 522542016-09-21T06:21:00021 September 2016 06:21:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Discharge Check Valve Failure to Seat Causes Trip of Component Cooling Water Pump ENS 522242016-09-06T17:47:0006 September 2016 17:47:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Non-Essential Service Water Header Declared Inoperable ENS 513292015-08-18T17:31:00018 August 2015 17:31:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Residual Heat Removal Heat Exchanger Outlet Valves Unanalyzed Condition ENS 507222015-01-08T12:00:0008 January 2015 12:00:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Loss of Both Channels of Refueling Water Storage Tank Instrumentation ENS 457652010-03-13T23:25:00013 March 2010 23:25:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat Emergency Diesel Generators (Edgs) Declared Inoperable Due to Service Water Tagout ENS 425242006-04-25T09:00:00025 April 2006 09:00:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat Service Water Piping Flooding Concern Impacts Rhr ENS 409252004-08-05T03:24:0005 August 2004 03:24:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Low Refueling Water Storage Tank Level 2018-09-07T04:00:00 | |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_53699&oldid=1157310"