ENS 44062

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v t e ENS Event
18:45 Mar 13, 2008
Title	Reactor Building to Torus Vacuum Breaker Pressure Switches May Not Perform Design Function
Event Description	March 13, 2008 at 1445 hours0.0167 days <br />0.401 hours <br />0.00239 weeks <br />5.498225e-4 months <br />, engineering analysis identified that the pressure switches that operate to open the Reactor Building (RB) to Suppression Chamber (Torus) vacuum breaker isolation valves would not perform their design function. The condition impacted the function of both RB to Torus vacuum breaker isolation valves. One vacuum breaker isolation valve has been opened to maintain the function of the vacuum breaker in that line. A plan is being implemented to correct the deficiency and is expected to be completed within the required 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> Limiting Condition for Operation expiration time for the current condition. This is being reported in accordance with 10 CFR 50.72(b)(3)(v)(D) as a condition that could have prevented the fulfillment of the safety function of structures or systems needed to mitigate the consequences of an accident. The licensee informed the NRC Resident Inspector.

ENS 44062 +/-
Where
Fermi Michigan (NRC Region 3)
Reporting

10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
LER:	05000341/LER-2008-002
Time - Person (Reporting Time:+-0.35 h-0.0146 days <br />-0.00208 weeks <br />-4.7943e-4 months <br />)
Opened:	D. Duncan / M. Himebauch 18:24 Mar 13, 2008
NRC Officer:	Bill Huffman
Last Updated:	Mar 13, 2008
44062 - 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 44062\u003C/a\u003E - \u003Ca href=\"/Fermi\" title=\"Fermi\"\u003EFermi\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EReactor Building to Torus Vacuum Breaker Pressure Switches May Not Perform Design Function\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 44062 - Fermi\n","link":"","lat":41.96295277777778,"lon":-83.25779444444444,"icon":"/w/images/5/5b/DTE_Energy_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Fermi with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2024-03-23T04:04:00 [Table view]
[ENS list for Fermi]

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