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Category:Letter
MONTHYEARIR 05000184/20232012024-01-25025 January 2024
National Institute of Standards and Technology - U.S. Nuclear Regulatory Commission 1st and 2nd Quarter Supplemental Inspection Report 05000184/2023201
ML24023A6182024-01-23023 January 2024
Us Dept. of Commerce, National Institute of Standards & Technology - Nuclear Program Assessments Response and Leadership Accountability
ML23257A1972023-12-26026 December 2023
Examination Results Letter No. 50-184/OL-23-02, National Institute of Standards and Technology
ML23257A1982023-12-26026 December 2023
Examination Report No. 50-184/OL-23-02, National Institute of Standards and Technology
ML23306A1642023-11-0202 November 2023
Examination Report Letter No. 50-182/OL-24-01, University of Missouri - Columbia
ML23306A1652023-11-0202 November 2023
Examination Result Letter No. 50-184/OL-24-01, University of Missouri - Columbia
ML23207A0402023-07-26026 July 2023
Us Dept. of Commerce, National Institute of Standards & Technology, Nuclear Safety Culture Assessment and Response
ML23195A1042023-07-12012 July 2023
NIST Center for Neutron Research (Ncnr), Withdrawal of License Amendment Request of December 11, 2020
ML23104A3002023-04-10010 April 2023
U.S. Dept. of Commerce, National Institute of Standards & Technology (Nist), Transmitted Herewith Is Operations Report No. 74 for the Nbsr for the Cy 2022
ML23089A1132023-03-30030 March 2023
Us Dept. of Commerce - National Institute of Standards & Technology - Non-Availability of Fuel and Funding to Convert Nbsr from HEU to LEU in 2021
ML23086B3832023-03-27027 March 2023
Us Dept. of Commerce, National Institute of Standards & Technology (NIST) - Change of Ncnr Director
ML23040A3372023-03-0909 March 2023
NIST Restart Authorization Letter
ML23059A0502023-03-0707 March 2023
Examination Confirmation Letter No. 50-184/OL-23-02, National Institute of Standards and Technology
IR 05000184/20222022023-03-0707 March 2023
National Institute of Standards and Technology U.S. Nuclear Regulatory Commission 4th 2022 Quarter Supplemental Inspection Report 05000184/2022202
ML23055A3002023-03-0303 March 2023
NIST License Amendment 15 - Core Alternative Reload Methodology Scheme
ML23020A9112023-02-0101 February 2023
National Institute of Standards and Technology Issuance of Amendment No. 14 to Renewed Facility Operating License No. TR 5
ML23033A1152023-02-0101 February 2023
Us Dept. of Commerce, National Institute of Standards & Technology, License Amendment Request
IR 05000184/20222032023-01-27027 January 2023
National Institute of Standards and Technology - U.S. Nuclear Regulatory Commission Security Inspection Report 05000184/2022203
ML22350A0652022-12-13013 December 2022
Us Dept. of Commerce, National Institute of Standards & Technology (Nist), License Amendment Request
ML22322A2182022-11-28028 November 2022
National Institute of Standards and Technology - Report on the Regulatory Audit Re Restart Request Following Exceedance of Cladding Temperature Safety Limit
ML22322A2112022-11-17017 November 2022
NIST Center for Neutron Research, License Amendment Request. Response to NRC Questions Regarding the Primary and Effluent Monitoring Systems
ML22293B8082022-10-19019 October 2022
National Institute of Standards & Technology (NIST) - License Amendment Request
ML22235A1172022-08-23023 August 2022
Us Dept of Commerce, National Institute of Standards & Technology, Transmittal of Draft of a Proposed Presentation of 02/03/2021, Nbsr Event for NRC Review
ML22227A1502022-08-15015 August 2022
Us Dept of Commerce, National Institute of Standards & Technology (Nist), Request NRC Permission to Restart the Reactor Upon Completion of Listed Corrective Actions and Recovery Efforts
ML22223A1462022-08-11011 August 2022
Docket Number 50-184 and the Nbsr Requalification Plan
ML22206A2132022-08-0101 August 2022
Letter to National Institute of Standards and Technology, Center for Neutron Research - Confirmatory Order (EA-21-148)
ML22206A0102022-08-0101 August 2022
U.S. Nuclear Regulatory Commission Supplemental Inspection Plan for National Institute of Standards and Technology
ML22181A1282022-07-21021 July 2022
National Institute of Standards and Technology - Issuance of Amendment No. 13 to Renewed Facility Operating License No. TR-5
ML22187A1272022-06-29029 June 2022
Nbsr Restart Request
ML22160A2852022-06-0808 June 2022
Nbsr License Amendment Request Supplement
ML22122A0882022-04-27027 April 2022
Letter for T. H. Newton, NIST Center for Neutron Research, from J. S. Bowen, Nrc/Nrr/Danu, NRC Office of Investigations Report No. 1-2022-005 - Release of OI Synopsis
ML22094A1082022-04-0404 April 2022
Transmittal of Operations Report No. 74 for the Nbsr for January 1, 2021 to December 31, 2021
ML22084A4082022-03-30030 March 2022
NIST - Non-availability of Fuel and Funding to Convert Nbsr from HEU to LEU in 2021
IR 05000184/20222012022-03-16016 March 2022
National Institute of Standards and Technology - Us Nuclear Regulatory Commission Special Inspection Report No 05000184-2022201
ML22012A0902022-01-11011 January 2022
Nbsr License Amendment Request, Revised No Significant Hazard Consideration Determination
ML21349A3772022-01-0404 January 2022
December 7, 2021, Summary of Mtg with Nist to Discuss Proposed Technical Specification Changes at the National Bureau of Standards Reactor EPID L-2021-LLN-0000
ML21361A2472021-12-23023 December 2021
Nbsr License Amendment Request
ML21355A2752021-12-21021 December 2021
Us Dept. of Commerce, National Institute of Standards & Technology, Nbsr Response to Request for Supplemental Information on Request to Restart the Nbsr
ML21355A2742021-12-20020 December 2021
Us Dept. of Commerce, National Institute of Standards & Technology, Supplement to October 1, 2021 Report and Restart Request
ML21340A0092021-12-0303 December 2021
Nbsr Response to Request for Supplemental Information on Request to Restart the Nbsr
ML21294A2772021-11-18018 November 2021
National Institute of Standards and Technology - Supplemental Information Needed for the Request to Restart the National Bureau of Standards Reactor
ML21294A3732021-10-21021 October 2021
National Institute of Standards and Technology - Submittal of Supplement to October 1, 2021 Report and Restart Request
ML21288A5552021-10-15015 October 2021
Us Dept. of Commerce, National Institute of Standards and Technology (NIST) - Supplement to October 1, 2021 Report and Restart Request
ML21274A0272021-10-0101 October 2021
Nbsr Report on February 3, 2021 Fuel Failure Event, Root Causes, Corrective Actions, and Restart Readiness
ML21265A4352021-09-24024 September 2021
National Institute of Standards and Technology - Change of Facility Project Manager
ML21153A4162021-06-15015 June 2021
National Institute of Standards and Technology - Acceptance of the Application for a License Amendment Request for License Amendment and Addjustment of Tritium Effluent Values for D2 Cold Source Under Title 10 of the Code of Federal Regulat
ML21153A3962021-06-0202 June 2021
Us Dept of Commerce, National Institute of Standards & Technology (NIST) - Docket Number 50-184 and the Nbsr Requalification Plan
ML21133A2662021-05-13013 May 2021
Us Dept. of Commerce, National Institute of Standards & Technology, Follow-Up to Event Report
ML21130A6042021-04-30030 April 2021
Us Dept of Commerce, National Institute of Standard & Technology - Non-Availability of Fuel and Funding to Convert Nbsr from HEU to LEU in 2021
IR 05000184/20212012021-04-14014 April 2021
National Institute of Standards and Technology U.S. Nuclear Regulatory Commission Interim Special Inspection Report No. 05000184/2021201
2024-01-25
[Table view]
Category:Written Event Report (30 or 60 day)
MONTHYEARML21133A2662021-05-13013 May 2021
Us Dept. of Commerce, National Institute of Standards & Technology, Follow-Up to Event Report
ML21064A5232021-03-0505 March 2021
NIST Event Report 55094 of Ncnr Safety Limit Exceeded on February 3, 2021 Due to Detection of Fission Products Upon Reactor Startup
ML21048A1492021-02-16016 February 2021
Report of Ncnr Declaration of Alert
2021-05-13
[Table view] |
Text
1 of g A l
a UNITEDSTATES National institute DEPARTMENT ofStandards OFCOMMERCE andTechnology b4TIS 9/
OS Gaithersburg, Maryland 20899-May 13,2021 Document Control Desk U.S. Nuclear Regulatory Commission Washington,DC 20555-0001
Subject:
Follow-up toevent report Ref: NRCEvent Report #55120, Docket 50-184, Facility License TR-5 Sirs andMadams:
OnMarch 5,2021, the NCNR(NIST Center for Neutron Research)submitted a report of exceeding a safety limitonthe event ofFebruary 3, 2021 (original Event Report #55094).
Inresponse tothe event, we instituted aninvestigation into the rootcauses andhave uncovered evidence tosuggest that there wasanunlatched element inthe core prior to reactor startup onFebruary 3.Theinvestigation hasidentified inadequacies inthe implementation ofadministrative andprocedural controls.Specifically, these inadequacies areasfollows:
1)t raining andproficiencies infuel latching,
- 2) procedures infuel movements andlatching,
- 3) enforcement of procedural compliance 4)implementation oflatch verification methods, and 5)management oversight of refueling staffing Accordingly, we reported this bytelephone tothe NRCHeadquarters Operation Center onMay6,2021 andaresubmitting this 14-day report inaccordance withNBSR Technical Specification 6.7.2(1)(g).
Inaddition, inaccordance with reporting requirements inNBSRTechnical Specification 6.7.2(1)(d) we have i dentifiedthat the i ntentof the f ollowing Limiting Conditions for Operation wasnotmet:
- TS3.1.3 Thereactor shall notoperate unless all gridpositions arefilledwith fuel length fuel elements or thimbles, except during and subcritical critical startup testing with natural convections flow.
Eventhough itwasbelieved that thisspecification wasmetonFebruary 3,2021 priorreactor to startup, subsequent investigation found that an elementin position J-7 wasoutofthe lower grid plate. Itisnow presumed that thiselement wasout ofposition prior toreactor startup.
e TS3.9.2.1. "Following handling offitelwithin the reactorvessel, thereactor shall notbeoperated until all fuel elements that have been handled areinspected
todetermine that theyarelocked intheir proper inthe positions grid core structure. This beaccomplished shall byoneof following the methods:
(1) Elevation check ofthe fuelelement with mainpumpflow.
(2) Rotational check ofthe elementhead inthelatching direction only.
(3)Visual inspection of thefuelelement headorlatching "
bar.
After therefueling onJanuary the 4,2021, required rotational checks were completedand signed off. However, investigation the the following February 3
event showedthat these checks weredone incorrectly, andthusdid notmeetthe intent ofTS3.9.2.1.
feel Please free tocontact meif you haveanyquestions.
Respeclly subitted,
/
/' .
Thomas Newton DeputyDirector andChief ofReactor Operations andEngineering NISTCenter for Neutron Research