ENS 41149

From kanterella

Jump to navigation Jump to search

v t e ENS Event
21:30 Oct 26, 2004
Title	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Event Description	THIS IS NOT A NEW REPORT. This event report was originally withheld from public release under the NRC's policy for protecting sensitive unclassified information. The NRC has reevaluated this policy and is now making this event report available to the public with suitable redactions. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FAILURE OF SAFETY SYSTEM CAUSING UNFAVORABLE GEOMETRY The licensee reported a transfer of low concentration HEU solution from favorable to unfavorable geometry was initiated upon sampling data that was not representative of the solution. The solution has been determined to be above the transfer concentration limit. Verification of HEU concentration is an administrative "item relied on for safety" (IROFS) for the accident sequence. The remaining IROFS for the accident sequence is an inline radiation detector that automatically closes redundant block valves. This system performed as designed. The system was placed in a safe shutdown condition and the solution remains in a favorable geometry. Mass is controlled in the unfavorable geometry tank by limiting the volume and concentration of transfers into it. The failed control is administrative sampling and verifying the concentration is below the limit. The licensee states the solution will be reprocessed to lower concentration prior to discharge. The licensee has informed the NRC Resident Inspector. * * UPDATE ON 05/11/08 BY J KOZAL * * * THIS IS NOT A NEW REPORT. This event report was originally withheld from public release under the NRC's policy for protecting sensitive unclassified information. The NRC has reevaluated this policy and is now making this event report available to the public with suitable redactions.

ENS 41149 +/-
Where
Nuclear Fuel Services Inc. Erwin, Tennessee (NRC Region 2)
License number:	SNM-124
Reporting

Part 70 App A (B)(2)
Time - Person (Reporting Time:+13.12 h0.547 days <br />0.0781 weeks <br />0.018 months <br />)
Opened:	Scott Kirk 10:37 Oct 27, 2004
NRC Officer:	Howie Crouch
Last Updated:	May 11, 2008
41149 - NRC Website
v • d • e

v t e Emergency Notification System
Nuclear Fuel Services Inc. with Part 70 App A (B)(2)
WEEKMONTHYEAR2022-10-05T19:00:00 [Table view]
[ENS list for Nuclear Fuel Services Inc.]

Retrieved from "https://kanterella.com/w/index.php?title=ENS_41149&oldid=1184042"

ENS Notification