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MONTHYEARML12156A0972011-12-12012 December 2011 University of Texas at Austin - *Redacted* Request for Renewal of Facility Operating License R-129 Project stage: Request ML1200501062012-01-10010 January 2012 University of Texas at Austin - Acknowledgment of Receipt of Application for Renewal of Facility Operating License No. R-129 (Tac No. ME7694) Project stage: Other ML12030A1022012-01-17017 January 2012 the University of Texas Triga II Research Reactor Safety Analysis Report, Chapter 12 Project stage: Request ML12030A1032012-01-17017 January 2012 Information Supplementing Request for Renewal of Facility Operating License R-129 Project stage: Supplement ML12156A1962012-01-17017 January 2012 University of Texas at Austin - Redacted Supplement to Application Containing Table of Contents, Chapter 4 and Chapter 9 of the Safety Analysis Report Project stage: Supplement ML12061A0092012-02-21021 February 2012 University of Texas at Austin - Supplemental Information Relative to Proposed Safety Analysis Report, Appendix 15.4 Project stage: Supplement ML1215003082012-06-25025 June 2012 University of Texas at Austin - Request for Additional Information, Application for Renewal of Facility Operating License No. R-129 for the Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: RAI ML12307A0712012-09-17017 September 2012 University of Texas at Austin - Partial Response to Request for Additional Information Regarding the License Renewal Request for the Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: Response to RAI ML13002A0152012-12-19019 December 2012 University of Texas at Austin - Request for Additional Information Regarding the License Renewal Request for the Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: Request ML13091A0062013-03-22022 March 2013 University of Texas, Austin, Response to Request for Additional Information to New Fuel Storage License Renewal Project stage: Response to RAI ML13190A3562013-06-24024 June 2013 University of Texas, Austin, Response to Request for an Additional Information Regarding License Renewal Request for the Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: Request ML13246A0142013-08-21021 August 2013 Request for Renewal of Facility Operating License R-129 Project stage: Request ML14002A3172013-12-18018 December 2013 University of Texas, Austin, Request an Additional 90 Days to Complete Response to the Remaining Items Project stage: Other ML14279A0262014-09-25025 September 2014 the University of Texas at Austin, Request for Renewal of Facility License R-129 Project stage: Request ML15211A6382015-07-15015 July 2015 University of Texas - Austin - Response to the Request for Additional Information Regarding License Renewal - Redacted Project stage: Request ML15211A3622015-07-31031 July 2015 University of Texas at Austin - Request for Additional Information Regarding the License Renewal Request for the Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: RAI ML16015A0522015-12-22022 December 2015 Univ. of Texas-Austin - Response to Request for Additional Information Regarding Renewal Request, July 31, 2015 Correspondence Project stage: Response to RAI ML16053A0942016-02-0505 February 2016 University of Texas at Austin - Response to Request for Additional Information Regarding the License Renewal Request for the Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: Response to RAI ML16103A1102016-04-13013 April 2016 University of Texas at Austin - Withdraw of Request for Additional Information Dated April 1, 2015, to Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: RAI ML16132A2392016-05-0202 May 2016 University of Texas-Austin - Response to Request for Additional Information Regarding the License Renewal for Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: Response to RAI ML16358A6442017-01-27027 January 2017 University of Texas at Austin - Request for Additional Information Regarding License Renewal Request (Operator Requalification Plan) for the Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Research Reactor Project stage: RAI ML17038A2692017-02-16016 February 2017 University of Texas at Austin Review of the Emergency Plan in Support of the License Renewal of Facility Operating License No. R-129 for the University of Texas at Austin Nuclear Engineering Teaching Laboratory Triga Mark II Nuclear Researc Project stage: Approval ML17094A5282017-03-15015 March 2017 Univ. of Texas - Austin, Response to Request for Additional Information Regarding License Renewal Request Project stage: Response to RAI 2013-08-21
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Category:Letter
MONTHYEARML23332A1052023-12-0707 December 2023 University of Texas at Austin - Regulatory Audit Re Renewal of Facility Operating License No. R-129 for Its Triga Mark II Nuclear Reactor ML23258A1622023-09-15015 September 2023 Submission of Environmental Report for the University of Texas at Austin Research Reactor in Support of License Renewal ML23216A2122023-08-0404 August 2023 Univ. of Texas - Austin, Submittal of Draft Safety Analysis Report for the Support of License Renewal ML23193B0332023-07-31031 July 2023 University of Texas at Austin - NRC Security Inspection 2023202 IR 05000602/20232012023-07-31031 July 2023 University of Texas at Austin - NRC Safety Inspection Report No. 05000602/2023201 ML23195A1802023-07-14014 July 2023 Submission of Revised Draft Safety Analysis Report (Chapters 4 and 13) Incorporating Neutronic and Thermal Hydraulic Analysis for the University of Texas at Austin Research Reactor ML23129A2432023-05-10010 May 2023 University of Texas at Austin Notice of Violation ML23102A1422023-04-13013 April 2023 Examination Confirmation Letter No. 50-602/OL-23-02, University of Texas at Austin ML23065A3032023-04-11011 April 2023 University of Texas at Austin Issuance of Amendment No. 8 to Facility Operating License R-129, for the University of Texas at Austin Triga (Training, Research, Isotopes, General Atomics) Nuclear Research Reactor to Change Paragraphs 2.B.(2) ML23074A2142023-03-16016 March 2023 Transmittal of 2022 Annual Report for the University of Texas Triga II Nuclear Research Reactor ML23052A1712023-03-0707 March 2023 University of Texas at Austin - Report on the Regulatory Audit Renewal of Facility Operating License No. R-129; Docket No. 50-602 ML23067A1962023-03-0707 March 2023 Univ of Texas - Austin, Reply to a Notice of Violation ML23067A2092023-02-25025 February 2023 University of Texas at Austin - Response to Apparent Violations in NRC Special Inspection Report 05000602/2022201; EA-22-134 ML23040A3032023-02-0909 February 2023 Univ of Texas - Austin, Submittal of Neutronics Report and Thermal Hydraulic Analysis of the Triga Reactor IR 05000602/20222012023-01-25025 January 2023 University of Texas at Austin - U.S. Nuclear Regulatory Commission Special Inspection Report 05000602/2022201 ML22322A1142022-11-16016 November 2022 the University of Texas Nuclear Research Reactor 14-Day Report ML22333A6232022-11-16016 November 2022 University of Texas, Submittal of 14-Day Report for Event Number 56198 ML22224A1432022-09-13013 September 2022 Examination Confirmation Letter No 50-602/OL-23-01, University of Texas at Austin ML22269A4792022-09-0909 September 2022 Request for Revision of Uranium and Plutonium Forms in License R-129 ML22224A1222022-08-22022 August 2022 University of Texas at Austin Change of Facility Backup Project Manager ML22164A0092022-06-13013 June 2022 Annual Report for the University of Texas Triga II Nuclear Research Reactor ML22164A0062022-06-13013 June 2022 Univ of Texas - Austin, Change in Level 1 Management ML22130A1752022-05-17017 May 2022 University of Texas at Austin Interim Status Report on the Regulatory Audit Re Renewal of Facility Operating License No R-129 IR 05000602/20212012022-01-26026 January 2022 University of Texas at Austin - Us Nuclear Regulatory Commission Routine Safety Inspection Report No. 05000602/2021201 ML21272A1662021-10-0404 October 2021 University of Texas at Austin Change of Facility Project Manager ML21266A4062021-09-0101 September 2021 Notification of a Change in Level 1 Management for the University of Texas at Austin Nuclear Engineering Teaching Laboratory (NETL) ML21077A1202021-03-0909 March 2021 Transmittal of 2019 Annual Report for the University of Texas Triga II Nuclear Research Reactor ML21077A0792021-02-0808 February 2021 Univ. of Texas - Austin, Revision of Physical Security Plan ML21015A3422021-01-19019 January 2021 University of Texas at Austin - Review of the Physical Security Plan in Support of Renewal of Facility Operating License No. R-129 IR 05000602/20202022021-01-0606 January 2021 University of Texas at Austin - Nuclear Regulatory Commission Routine Inspection Report 05000602/2020202 ML20345A1362020-12-0202 December 2020 the University of Texas at Austin - Draft Physical Security Plan for Comment ML20295A4242020-11-16016 November 2020 Notification of Mailing Address Change Regarding Submittal of Fingerprint Cards ML20290A4642020-10-0101 October 2020 Notification of a Change in Level 1 Management for the University of Texas at Austin Nuclear Engineering Teaching Laboratory (NETL) ML20203M1662020-07-23023 July 2020 University of Texas at Austin - Regulatory Audit Renewal of Facility Operating License No. R-129 ML20206K9492020-06-24024 June 2020 Notification of a Change in Level 1 Management for the University of Texas at Austin Nuclear Engineering Teaching Laboratory (NETL) ML20115E2932020-04-16016 April 2020 University of Texas, Austin, Revised Submission of Neutronic and Thermal Hydraulic Analysis ML20097C6512020-03-31031 March 2020 Univ. of Texas - Austin - Submittal of Neutronic and Thermal Hydraulic Analysis ML20072H3352020-03-0303 March 2020 2019 Annual Report for the University of Texas Triga II Nuclear Research Reactor IR 05000602/20192012019-12-23023 December 2019 University of Texas - Austin U.S. Nuclear Regulatory Commission Routine Inspection Report NO.50-0602/2019-201 ML19337A4352019-11-25025 November 2019 Univ. of Texas - Austin - Request_ for Extension of Date for Completion of Neutronic and Thermal-Hydraulic Analyses ML19312C0042019-11-12012 November 2019 University of Texas at Austin - Extension to Revised Schedule for the Completion of the Reactor Analyses Renewal of Facility Operating License No. R 129 for the University of Texas at Austin Research Reactor ML19281E0142019-10-0909 October 2019 Examination Report No. 50-602/OL-19-01, University of Texas at Austin ML19065A1972019-09-0505 September 2019 University of Texas at Austin - Issuance of Amendment No. 7 to Facility Operating License No. R 129 to Increase the Special Nuclear Material Possession Limits for the University of Texas at Austin Research Reactor ML19225D1372019-08-13013 August 2019 the University of Texas at Austin Submittal of Revised Response to Request for Additional Information Regarding Physical Security Plan ML19234A1102019-08-12012 August 2019 Revised Schedule for Completion of the Reactor Analyses for the University of Texas at Austin Research Reactor ML19200A1922019-07-26026 July 2019 University of Texas at Austin - Approval of the Revised Operator Requalification Program Renewal of Facility Operating License No. R 129 for the University of Texas at Austin Research Reactor ML19176A4832019-07-0303 July 2019 Examination Confirmation Letter No. 50-602/OL-19-01, University of Texas at Austin ML19119A1282019-06-0606 June 2019 University of Texas at Austin - Acceptance of Requested Licensing Action IR 05000602/20182012019-05-22022 May 2019 University of Texas at Austin - U.S. Nuclear Regulatory Commission Routine Inspection Report No. 50-602/2018-201 ML19121A4232019-04-25025 April 2019 Univ. of Texas - Austin - Submittal of Changes to License Emergency Plan Under 10CFR50.54(q) 2023-09-15
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) Department of Mechanical .Engineering THE UNIVERSITY OF TEXAS AT AUSTIN Nuclear EngineeringTeaching Laboratory .Austin, Texas 78758 74512-232-5370 FAX 512-471-4589 - http://www.me.utexas.edu/-netL/
SAUS5 March 22, 2013 ATTN: Document Control Desk, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001 Patrick Boyle Project Manager Division of Policy and Rulemaking Research and Test Reactors Licensing Branch
SUBJECT:
Docket No. 50-602, Request for Renewal of Facility Operating License R-129 REF: UNIVERSITY OF TEXAS AT AUSTIN - REQUEST FOR ADDITIONAL INFORMATION REGARDING THE LICENSE RENEWAL REQUEST FOR THE NUCLEAR ENGINEERING TEACHING LABORATORY TRIGA MARK II NUCLEAR RESEARCH REACTOR (TAC NO. ME7694)
Sir:
The response regarding a request for additional information relative to new fuel storage is provided below.
RAI 20.2: During a site visit, the NRC staff noted that fuel elements are stored in what appears to be a non-standard rack for which no analysis is provided in the UT SAR. Please identify all locations covered by the license where fuel elements are stored, identify the types and numbers of fuel elements that are stored, provide details concerning the storage rack or bin geometry, and analysis that demonstrates that such racks or bins provide adequate conditions for storage.
RESPONSE
As part of the Department of Energy Voluntary Security Enhancements program for domestic facilities, safes have been acquired to support storage of new fuel, and will be fully implemented prior to completion of the relicense process. Potential safe movement will be limited by mass/weight. Fuel elements will be stored within the safes in a rectangular array defined by penetrations in a material that rests on shelf supports; potential movement of the array structure will be limited by clearance between the material and the inner walls of the safe. Potential for movement of fuel elements within the array will be controlled by clearance between the surface of the protective cardboard tube and the penetration.
Empty weight of the fuel safes is approximately 800-1000 Ibs, limiting potential for unintentional or uncontrolled movement. The nominal maximum diameter along the length of the fuel element is 1.495 in. New fuel elements are delivered in sealed cardboard tubes approximately 1/16 in. thick that protect the fuel element M(~L
surface during transportation and handling prior to use. Sleeves cover each end of the tubes, increasing clearance requirements. A 2-in. radial clearance along the surface provides approximately 3/16 in. form the circumference of the cardboard tube (with end caps reducing the clearance) and can be manufactured with standard tooling.
Therefore, penetrations in the material will be 2 in. (6.35 cm) diameter with center to center fuel element distance 2.5 in. (6.35 cm). There will be no loading normal to the material surface.
Criticality analysis was performed using SCALE (CSAS6 sequence), sample input file using ENDF 7 (release 0) continuous energy cross section library attached and assuming the safe adjacent to a concrete wall, resting on a concrete floor (Fig. 1). Free air spaces surrounding and within the safe are assumed to be filled with water, as the condition of optimal moderation. Results indicate that kf for a completely fill lattice is 0.78902 + 0.00073.
Figure 1: Room and Safe Figure 2: New Fuel Figure 3: New Fuel Figure 4: Lattice Top View Safe End View Safe Front View Calculations of kff based on the design of the array are conservative in assuming a water environment and full lattice is assumed. New fuel storage at UT is well above the ground floor, limiting potential for a water-filled environment. A fully charged lattice is enough fuel for approximately Y of a TRIGA core; UT currently has approximately 20% of the assumed loading, and does not anticipate potential for acquiring %of a new core.
We respectfully request an additional 90 days to complete response to the remaining items. If there are any questions, please feel free to contact P. M. Whaley at 512 232 5373 or whaley@mail.utexas.edu.
Your attention in this matter is greatly appreciated, P.M.W P. .
dcrpenal of perjury that the foregoing is true and correct.
S. Biegalski
ATTACHMENT 1: SCALE INPUT FILE, NEW FUEL STORAGE CRITICALITY ANALYSIS
'Input generated by GeeWiz SCALE 6.1 Compiled on Mon Jun 6 11:04:33 2011
=csas6 ut triga new fuel storage: steel safe on concrete floor, concrete wall ce v7 endf read composition zr-zrh2 1 5.393206 300 end h-zrh2 1 0.09534004 300 end u-235 10.1009533 300 end u-238 10.4089117 300 end zirconium 2 0.961169 300 end graphite 3 0.75 300 end dry-air 41300 end aluminum 5 1 300 end ss304s 6 1 300 end h2o 7 1 300 end oak 8 1300 end reg-concrete 9 1 300 end end composition read parameter gen=3000 npg=350 nsk=30 htm=no end parameter read geometry global unit 1 com="unit 1: concrete in room and walls" cuboid 10 600 -600 600 -34.925 600 -34.925 cuboid 20 600 -600 600 -34.925 -4.445 -34.925 cuboid 25 600 -600 -6.35 -34.925 600 -4.445 cuboid 30 75.885 -4.765 56.9 -6.35 149.225 -4.445 hole 2 media 7 1 10 25 media 9 1 20 media 9 1 25 boundary 10 unit 2 com="unit 2: safe" cuboid 30 75.885 -4.765 56.9 -6.35 149.225 -4.445 cuboid 31 71.12 0 42.93 0 144.78 81.28 cuboid 32 71.12 0 42.93 0 81.28 0 array 1 32 place 1 11 -2.4 -3.81 0 media 6 1 30 32 media 7 1 31 boundary 30 unit 3 com="unit 3: lattice structure, without hole for inserting fuel" cuboid 30 6.35 0 6.35 0 81.28 0
cuboid 41 6.35 0 6.35 0 11.43 10.16 cuboid 42 6.35 0 6.35 0 52.07 50.8 media 7 1 30 42 media 8 1 41 media 8 1 42 boundary 30 unit 4 com="unit 4: lattice position, empty" cuboid 30 6.35 0 6.35 0 81.28 0 cuboid 41 6.35 0 6.35 0 11.43 10.16 cuboid 42 6.35 0 6.35 0 52.07 50.8 cylinder 50 2.54 81.28 0 origin x=3.175 y=3.175 z=O media 7 1 30 42 -50 media 7 1 50 media 8 141 -50 media 8 1 42 -50 boundary 30 unit 5 com="unit 5: lattice position, cardboard and fuel (via hole)"
cuboid 30 6.35 0 6.35 0 81.28 0 cuboid 41 6.35 0 6.35 0 11.43 10.16 cuboid 42 6.35 0 6.35 0 52.07 50.8 cylinder 50 2.54 81.28 0 origin x=3.175 y=3.175 z=O cylinder 51 2.0359 68.733 0 origin x=3.175 y=3.175 z=O cylinder 52 1.8771 68.733 0 origin x=3.175 y=3.175 z=O hole 6 origin x=3.175 y=3.175 z=35.97 media 7 1 30 42 -50 media 8 1 41 -50 media 8 1 42 -50 media 7 1 50 -51 media 8 1 51 -52 media 7 1 52 boundary 30 unit 6 com="unit 6, new fuel element" cylinder 20 1.8771 32.5374 -34.0741 cone 40 0.635 32.5374 1.8771 27.4574 cylinder 41 1.8771 27.4574 -28.5013 cylinder 42 1.8263 26.8224 -27.8663 cylinder 43 1.7183 25.5524 19.05 cylinder 44 1.812 19.05 -19.05 cylinder 45 0.3175 19.05 -19.05 cylinder 46 1.7183 -19.05 -19.1287 cylinder 47 1.7183 -19.1287 -27.8663 cone 50 1.8771 -28.5013 0.635 -34.0741 media 7 1 20 41 -50 media 6 1 40 media 6 1 41 -42 media 4 1 42 44 47 media 3 1 43 media 1144 -45 media 2 1 45 media 5 1 46
media 3 147 media 6 150 boundary 20 end geometry read array ara=1 nux=12 nuy=8 nuz=l typ=square fill 3 3 3 3 3 3 3 3 3 3 3 3 3 5 5 5 5 5 5 5 5 5 5 3 3 5 5 5 5 5 5 5 5 5 5 3 3 5 5 5 5 5 5 5 5 5 5 3 3 5 5 5 5 5 5 5 5 5 5 3 3 5 5 5.5 5 5 5 5 5 5 3 3 5 5 5 5 5 5 5 5 5 5 3 3 3 3 3 3 3 3 3 3 3 3 3 end fill end array end data end
Please contact me by phone at 512-232-5373 or email whalev@mail.utexas.edu if you require additional information or there is a problem with this submittal.
Thank you, P. M. Whaley Associate Director Nuclear Engineering Teaching Laboratory The University of Texas at Austin I declare under penalty of perjury that the foregoing is true and correct.
Executed on December 12, 2012 Steven R. Biegalski NETL Director Al-: 1. Report on Neutronic Analysis of the UT TRIGA Reactor
- 2. Historical UT TRIGA Core data