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MONTHYEARML21274A0222021-09-20020 September 2021 Root Cause Response, Revision 1 Project stage: Request ML21274A0242021-09-21021 September 2021 Memorandum on Recovery Items Project stage: Request ML21274A0232021-09-21021 September 2021 Latch Improvement Safety Analysis Project stage: Request ML21274A0252021-09-30030 September 2021 Corrective Action Plan Corrective Actions Required Prior to Reactor Startup Project stage: Request ML21340A0102021-12-0303 December 2021 Ncnr Response to November 17, 2021 Request for Supplemental Information Project stage: Request ML21340A0072021-12-0303 December 2021 Analysis of Cooling Flow Through 29 Fuel Elements with Fuel Element 1175 Dislodged Project stage: Request ML21361A2462021-12-23023 December 2021 Nbsr License Amendment Request Project stage: Request ML21361A2472021-12-23023 December 2021 Nbsr License Amendment Request Project stage: Request ML22012A0902022-01-11011 January 2022 Nbsr License Amendment Request, Revised No Significant Hazard Consideration Determination Project stage: Request ML22011A0732022-01-20020 January 2022 NIST Acceptance of the Application for a License Amendment Re Fuel Element Latch Verification Technical Specification Revision Project stage: Acceptance Review ML22160A2852022-06-0808 June 2022 Nbsr License Amendment Request Supplement Project stage: Supplement ML22181A1282022-07-21021 July 2022 National Institute of Standards and Technology - Issuance of Amendment No. 13 to Renewed Facility Operating License No. TR-5 Project stage: Approval 2021-09-30
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Category:Memoranda
MONTHYEARML23258A1232023-09-15015 September 2023 NIST September 11, 2023, Public Meeting Summary ML23026A3312023-02-0202 February 2023 NIST Requalification Plan Review ML21272A3652021-10-0101 October 2021 Action Plan to Review the Restart of the National Institute of Technology, National Bureau of Standards Test Reactor Following Violation of a Safety Limit ML21274A0242021-09-21021 September 2021 Memorandum on Recovery Items ML21062A3012021-03-0505 March 2021 Revision to National Institute of Standards and Technology Test Reactor Special Inspection Team Charter ML21053A0402020-12-0707 December 2020 Tritium LAR - Memo for Tom Newton ML14002A2402014-01-0202 January 2014 Examination Notification Memorandum to File, No. 50-184/OL-14-01, National Institute of Standards and Technology ML12241A3042012-12-28028 December 2012 Corporate Notification Letter, No. 50-184-OL-13-01, National Institute of Science and Technology ML1100500522011-01-12012 January 2011 National Institute of Standards and Technology - Amendment No. 14 to Indemnity Agreement No. D-9 ML0911700022009-07-0202 July 2009 National Institute of Standards and Technology, Notice of Issuance of Renewed Facility Operating License No. TR-5 ML0703200102007-02-0202 February 2007 National Institute of Standards and Technology Test Reactor (Nbsr) - Draft Request for Additional Information (Rai), Regarding Amendment Request for Re-Licensing 2023-09-15
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Memorandum on Recovery Items September 21, 2021 From: Tom Newton, Chief, Reactor Operations and Engineering To: Event Recovery File In addition to the corrective actions listed in the Root Cause Response, there are several items in progress to return the reactor to an operational state. These are listed below, along with their status as of 21 September 2021.
- 1. Cleanup of the primary system. A Single Award Task Order Contract (SATOC) has been awarded to a contractor experienced in decontamination and recovery work. Work under this contract includes cleanup of the reactor upper and lower grid plates. Filters for cleanup of the primary system have been acquired and filtering will commence once the grid plates are cleaned up of debris. Special Filters have been designed to sit in each fuel element position.
- 2. Fuel reuse evaluation. A number of studies were made to determine the conditions under which the existing (undamaged) fuel elements can be reused, including analysis of foreign particle size and the effect of reactor coolant flow on the remaining elements with one element dislodged. Fuel elements will be flushed and then inspected to verify the absence of foreign particles. This work will be performed under the SATOC.
- 3. Disposition of the damaged element. The damaged element has been removed from the core and placed in a storage location, separate from other fuel storage. Ultimate disposition of the element is currently under evaluation.
- 4. Fuel head design considerations. An evaluation of the fuel head design has concluded that, given the corrective actions planned, the current configuration may be safely used without modification. An engineering study of future redesign of the head is underway.
- 5. Operational surety of balance of plant. An action items list is being continually updated and items, including technical specification surveillances, are being performed as conditions allow.
The reactor will not be restarted until all critical plant systems are evaluated and functional.