ENS 54492
ENS Event | |
|---|---|
23:23 Jan 22, 2020 | |
| Title | Required Procedural Controls Were Not Followed |
| Event Description | Urenco USA is conservatively reporting a condition in that Uranic bearing material was placed into the Small Component Decontamination Train (SCDT) without meeting all conditions of IROFS54a and IROFS54b.
IROFS54a and IROFS54b are Mass Controls that ensure the configuration of the SCDT remains sub-critical. Bookkeeping elements of the IROFS were performed correctly and the masses of the components were determined properly. However the visual inspection of the SCDT to ensure it is empty, prior to introducing components, was not performed in accordance with procedure instructions. The components were removed and the visual inspection was performed which confirmed the SCDT was in fact empty. The facility was and remains in a safe and stable configuration. The licensee will notify NRC Region 2 tomorrow.
This event was determined to not be reportable. Consistent with NRC FCSS ISG-12, Rev 1, 10 CFR Part 70, Appendix A - Reportable Safety Events, UUSA has concluded that EN54492 was not reportable. All situations where IROFS have failed or degraded are reportable under Paragraphs (a)(4) or (b)(2), exceptions include the following: The capabilities of the degraded IROFS are still sufficient to meet the performance requirements of 10 CFR 70.61. On 01-17-2020, UUSA completed a discharge of material to the slab tanks in the Liquid Effluent Collection Treatment & Storage (LECTS) Room. Upon completion of decontamination activities in the SCDT, procedurally required actions were performed to ensure all in process uranic material was removed and verification of the uranic material hold-up value was still valid in accordance with IROFS54a&b. IROFS54a&b tags and locks were then installed indicating the IROFS functions had been performed. On 01-22-2020, a new work evolution began which included bookkeeping measurements to ensure the calculated mass of uranium was below the allowable threshold prior to introduction to the SCDT. In summary, all requirements of the IROFS54a&b boundary were functionally complete and the capabilities of the degraded IROFS remained sufficient to meet the performance requirements of 10 CFR 70.61. Notified the R2DO (Coovert) and NMSS Events Notification (email) |
| Where | |
|---|---|
| Louisiana Energy Services Eunice, New Mexico (NRC Region 2) | |
| License number: | SNM-2010 |
| Reporting | |
| Part 70 App A (A)(4) | |
| Time - Person (Reporting Time:+-4.38 h-0.183 days <br />-0.0261 weeks <br />-0.006 months <br />) | |
| Opened: | Wyatt Padgett 19:00 Jan 22, 2020 |
| NRC Officer: | Thomas Kendzia |
| Last Updated: | Jan 27, 2020 |
| 54492 - NRC Website | |
Louisiana Energy Services with Part 70 App A (A)(4) | |
WEEKMONTHYEARENS 570612024-04-02T05:45:0002 April 2024 05:45:00
[Table view]Part 70 App A (A)(4) Item Relied on for Safety (Irofs) Inoperable ENS 563022023-01-05T21:45:0005 January 2023 21:45:00 Part 70 App A (A)(4) Safety Item Unavailable ENS 559302022-06-08T01:00:0008 June 2022 01:00:00 Part 70 App A (A)(4) UF6 Leakage Inside Autoclave ENS 557702022-03-07T17:45:0007 March 2022 17:45:00 Part 70 App A (A)(4) Item Relied on for Safety (IROFS) Inoperable ENS 544922020-01-22T23:23:00022 January 2020 23:23:00 Part 70 App A (A)(4) Required Procedural Controls Were Not Followed ENS 528862017-08-03T21:00:0003 August 2017 21:00:00 Part 70 App A (A)(4) Administrative Criticality Controls Not Used ENS 517762016-03-07T23:15:0007 March 2016 23:15:00 Part 70 App A (A)(4) Administrative Items Relied on for Safety (Irofs) Not Performed ENS 500232013-09-10T21:05:00010 September 2013 21:05:00 Part 70 App A (A)(4) Uf6 Present in the Small Component Decontamination Train 2024-04-02T05:45:00 | |