ENS 44579: Difference between revisions

v t e ENS Event
20:15 Oct 17, 2008
Title	Inadvertent Transfer of Unsampled Discard Solution
Event Description	Transfer of low uranium concentration discard solution from Tank WF03 to Waste Water Treatment Facility (WWTF) Tank 29 without final sample and analysis due to inadvertently opening incorrect valve. There were no actual or potential safety consequences to workers, the public, or the environment. Solution from discard Tank WF04 had been sampled and analyzed and was approved for transfer to WWTF Tank 29. An incorrect valve was opened and low uranium concentration solution was transferred from discard Tank WF03 to WWTF Tank 29 without final sample and analysis. All sources into the discard tanks (WF03 and WF04) are routed through an in-line uranium concentration monitor. Remaining SSC's were available and reliable. Solution in discard Tank WF03 had passed through an in-line uranium concentration monitor which would have stopped the transfer if a high uranium concentration was present. Solution in discard Tank WF03 and WWTF Tank 29 were sampled. Both uranium concentration results are low. The solution in discard Tank WF03 would have met sample analysis requirements. The safety significance is low due to the low mass and concentration of U-235. In-line monitor was also present which would have prevented transfer of high concentration solution into discard Tank WF03. The control is to sample and analyze solution prior to transfer to WWTF. The deficiency in this case is the failure to perform those actions prior to discard. Event was identified and entered into Problem Identification, Resolution and Correction System (PIRCS) - PIRCS #15829. Investigation is underway. Both the discard Tank WF03 and the WWTF Tank 29 were sampled. The licensee notified the NRC Resident Inspector.

ENS 44579 +/-
Where
Nuclear Fuel Services Inc. Erwin, Tennessee (NRC Region 2)
License number:	Snm-124
Reporting

10 CFR 70.74 APP. A
Time - Person (Reporting Time:+0.5 h0.0208 days <br />0.00298 weeks <br />6.849e-4 months <br />)
Opened:	Rik Droke 20:45 Oct 17, 2008
NRC Officer:	Donald Norwood
Last Updated:	Oct 17, 2008
44579 - NRC Website
v • d • e

v t e Emergency Notification System
Nuclear Fuel Services Inc. with 10 CFR 70.74 APP. A
WEEKMONTHYEAR2009-03-04T19:40:00 [Table view]
[ENS list for Nuclear Fuel Services Inc.]

@@ Line 16: / Line 16: @@
 | event date = 10/17/2008 16:15 EDT
 | last update date = 10/17/2008
-| title = Inadvertent Transfer Of Unsampled Discard Solution
+| title = Inadvertent Transfer of Unsampled Discard Solution
 | event text = Transfer of low uranium concentration discard solution from Tank WF03 to Waste Water Treatment Facility (WWTF) Tank 29 without final sample and analysis due to inadvertently opening incorrect valve.
 There were no actual or potential safety consequences to workers, the public, or the environment.

ENS 44579: Difference between revisions

Revision as of 22:13, 1 March 2018

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ENS 44579: Difference between revisions

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