ENS 51837
From kanterella
Jump to navigation
Jump to search
ENS Event | |
---|---|
21:15 Mar 30, 2016 | |
Title | Degraded Condition Due to Discovery of Pressure Boundary Leakage |
Event Description | On March 30, 2016, at 1715 EDT, with the Unit shutdown and in Mode 6 for refueling, evidence of leakage was identified on a 3/4-inch flexible braided piping connection on Reactor Coolant Pump (RCP) 1-1, and this issue was determined to be reactor coolant system pressure boundary leakage. This flexible piping is for RCP 1-1 first stage seal cavity vent line, and is categorized as ASME Section III Class 2 piping. The leakage was identified due to the discovery of a small amount of boric acid (approximately 1/2 teaspoon) on the welded end connection of the flexible piping. No active leakage was identified at the time of discovery with the Reactor Coolant System depressurized and approximately 110 degrees F.
Technical Specification (TS) Limiting Condition for Operation (LCO) 3.4.13, 'RCS Operational Leakage,' does not apply in the current plant condition (Mode 6). The cause and resolution of the leakage are under evaluation. This event is reportable within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> per 10 CFR 50.72(b)(3)(ii)(A). The NRC Resident Inspector has been notified. |
Where | |
---|---|
Davis Besse ![]() Ohio (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |
LER: | 05000346/LER-2016-003 |
Time - Person (Reporting Time:+2.98 h0.124 days <br />0.0177 weeks <br />0.00408 months <br />) | |
Opened: | Bill Rayburn 00:14 Mar 31, 2016 |
NRC Officer: | Dong Park |
Last Updated: | Mar 31, 2016 |
51837 - 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 51837\u003C/a\u003E - \u003Ca href=\"/Davis_Besse\" title=\"Davis Besse\"\u003EDavis Besse\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EDegraded Condition Due to Discovery of Pressure Boundary Leakage\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 51837 - Davis Besse\n","link":"","lat":41.59545,"lon":-83.08950833333333,"icon":"/w/images/7/78/Cleveland_Electric_icon.png"}],"imageoverlays":null} | |
WEEKMONTHYEARENS 518372016-03-30T21:15:00030 March 2016 21:15:00
[Table view]10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition Due to Discovery of Pressure Boundary Leakage ENS 491632013-07-01T15:03:0001 July 2013 15:03:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition Due to Rcp Seal Line Pressure Boundary Leakage ENS 480002012-06-06T23:56:0006 June 2012 23:56:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition Due to Discovery of Pressure Boundary Leakage ENS 457642010-03-13T02:43:00013 March 2010 02:43:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Control Rod Drive Mechanism Nozzle Indications ENS 438802008-01-04T07:50:0004 January 2008 07:50:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Pressure Boundary Leakage Discovered During Refueling ENS 424372006-03-21T21:08:00021 March 2006 21:08:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition - Indication on Primary Coolant System Pressure Boundary Weld 2016-03-30T21:15:00 | |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_51837&oldid=421105"