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MONTHYEARML1007405732008-10-17017 October 2008 Redacted- License Renewal Application of the University of Wisconsin Nuclear Reactor; License R-74, Docket 20-156 Project stage: Other ML0929905182009-11-13013 November 2009 University of Wisconsin, Request for Additional Information (Financial Qualification) License Renewal Project stage: RAI ML1010504252010-05-0303 May 2010 University of Wisconsin, Request for Additional Information Regarding Renewal of Facility Operating License Project stage: RAI ML1005002722010-06-0404 June 2010 University of Wisconsin, Transmittal Letter Federal Register Notice Determination of Acceptability and Sufficiency for Docketing and Opportunity for Hearing Regarding the Application for the Renewal of Facility Operating License No. R-74 Project stage: Other ML1005006572010-06-14014 June 2010 FRN: General Notice, Determination of Acceptability and Sufficiency for Docketing and Opportunity for Hearing Regarding the Application for the Renewal of Facility Operating License No. R-74 Project stage: Other ML1016901372010-06-16016 June 2010 University of Wisconsin-Madison Nuclear Reactor Laboratory Response to Request for Additional Information for License Renewal to Facility License No. R-74 Project stage: Response to RAI ML1016900832010-06-16016 June 2010 University of Wisconsin Nuclear Reactor Laboratory Response to Request for Additional Information for License Renewal Facility License No. R-74, TAC No. ME1585 (Final Qualification RAI) Project stage: Response to RAI ML1021100512010-07-0808 July 2010 University of Wisconsin - Madison, Response to Request for Clarification for License Renewal to Facility License No. R-74 Project stage: Request ML1023202092010-08-11011 August 2010 Response to Request for Clarification for License Renewal to Facility License No. R-74 University of Wisconsin Nuclear Reactor Project stage: Request ML1022402282010-09-10010 September 2010 University of Wisconsin-Transmittal Letter to Licensee Environmental Assessment Regarding Renewal of Facility Operating License No. R-74 for the University of Wisconsin Nuclear Reactor Project stage: Other ML1022401922010-09-10010 September 2010 FRN: General Notice, University of Wisconsin, Environmental Assessment and Finding of No Significant Impact Regarding License Renewal Project stage: Other ML1032201492010-11-18018 November 2010 University of Wisconsin - Request for Additional Information Regarding the License Renewal for the University of Wisconsin Nuclear Reactor Project stage: RAI ML1033000402010-11-22022 November 2010 Response to Request for Additional Information for License Renewal to Facility License No. R-74 University of Wisconsin Nuclear Reactor Project stage: Response to RAI ML1103403102011-01-28028 January 2011 University of Wisconsin Nuclear Reactor - Submission of Revised Proposed Technical Specifications for License Renewal to Facility License Project stage: Other ML1104105342011-02-0808 February 2011 University of Wisconsin, Madison, Submission of Revised Dose Estimates for License Renewal Project stage: Other NRC-2010-0203, Federal Register Notice: General Notice, University of Wisconsin, Notice of Issuance of Renewed Facility Operating License No. R-742011-03-25025 March 2011 Federal Register Notice: General Notice, University of Wisconsin, Notice of Issuance of Renewed Facility Operating License No. R-74 Project stage: Approval ML1023701262011-03-25025 March 2011 University of Wisconsin - Appendix a to Renewed Facility Operating License No. R-74, Technical Specifications and Bases for the University of Wisconsin Nuclear Reactor Project stage: Other ML1023701402011-03-25025 March 2011 University of Wisconsin- Facility Operating License Renewal Safety Evaluation Report Project stage: Approval ML1023708652011-03-25025 March 2011 Federal Register Notice: General Notice, University of Wisconsin, Notice of Issuance of Renewed Facility Operating License No. R-74 Project stage: Approval 2010-06-16
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Category:Letter
MONTHYEARIR 05000156/20232012023-08-0101 August 2023 University of Wisconsin - U.S. Nuclear Regulatory Commission Routine Inspection Report No. 05000156/2023201 - Cover Letter and Enclosure IR 05000156/20222022022-12-28028 December 2022 University of Wisconsin - U. S. Nuclear Regulatory Commission Security Inspection Report No. 05000156-2022202 Cover Letter ML22340A0052022-11-30030 November 2022 Univ of Wisconsin - Madison, Submittal of 2021 - 2022 Annual Report ML22292A2982022-11-28028 November 2022 University of Wisconsin Research Reactor, Closure of Confirmatory Action Letter No. NRR-03-002 on the Site-Specific Compensatory Measures Implementation Plan ML22224A0852022-08-0808 August 2022 University of Wisconsin - Madison, Physical Security Protection Plan Cover Page & CAL No. NRR-03-002; Confirmatory Action Letter - Site Specific Compensatory Measures Implementation Plan, Request to Change Commitment ML22200A0422022-07-13013 July 2022 University of Wisconsin-Madison - Change to Physical Security Protection Plan in Accordance with 10 CFR 50.54(p) (2) IR 05000156/20222012022-06-0101 June 2022 University of Wisconsin - U.S. Nuclear Regulatory Commission Routine Inspection Report No. 05000156/2022201 ML22138A1872022-05-12012 May 2022 Univ. of Wisconsin - Madison, Technical Specification 6. 7. 2 (2) (a) Change in Operating Organization ML22062A7662022-04-20020 April 2022 the University of Wisconsin - Issuance of Amendment No. 18 to Facility License No. R-74 to Revise the Organizational Structure in the Technical Specifications for the University of Wisconsin Nuclear Reactor ML22046A0592022-02-24024 February 2022 Examination Confirmation Letter No. 50-156/OL-22-01, University of Wisconsin- Madison ML21253A2452021-09-23023 September 2021 University of Wisconsin - Change of Facility Project Manager ML21251A4862021-09-0202 September 2021 Univ. of Wisconsin, Madison - Annual Operating Report Fiscal Year 2020-2021 IR 05000156/20212012021-06-0303 June 2021 Univesity of Wisconsin - U.S. NRC Routine Inspection Report 05000156/2021201 ML21103A2532021-04-13013 April 2021 Examination Confirmation Letter No.50-156/OL-21-01, University of Wisconsin - Madison IR 05000156/20202022020-11-16016 November 2020 University of Wisconsin - U.S. Nuclear Regulatory Commission Routine Inspection Report 05000156/2020202 ML20295A4242020-11-16016 November 2020 Notification of Mailing Address Change Regarding Submittal of Fingerprint Cards ML20276A1192020-09-25025 September 2020 Univ. of Wisconsin, Madison - Transmittal of 2019-2020 Annual Report ML20253A3162020-09-22022 September 2020 Examination Report No. 50-156/OL-20-01, University of Wisconsin-Madison ML20192A1112020-07-10010 July 2020 Univ of Wisconsin-Madison - License Amendment Request Regarding Administrative Controls Proposed Changes to Technical Specifications IR 05000156/20202012020-05-20020 May 2020 University of Wisconsin - U.S. Nuclear Regulatory Commission Security Inspection Report No. 050000156/2020-201 - Non-OUOSRI (Cover Ltr) ML19351C7472019-12-0606 December 2019 Univ. of Wisconsin - Madison - Transmittal of 2018-2019 Annual Report ML19190A0912019-07-0202 July 2019 University of Wisconsin-Madison - Technical Specification 6.7.2 (2)(a): Change in Operating Organization IR 05000156/20192012019-04-24024 April 2019 University of Wisconsin - U.S. Nuclear Regulatory Commission Routine Inspection Report No. 50-156/2019-201 ML18365A3502019-01-0808 January 2019 University of Wisconsin - Change of Facility Project Manager ML18200A0652018-07-16016 July 2018 Transmittal of 2017-2018 Annual Report for the University of Wisconsin Nuclear Reactor Laboratory ML18179A1692018-06-25025 June 2018 University of Wisconsin-Madison - 10 CFR 50.74, Notification of Change in Operator or Senior Operator Status ML18178A3882018-06-22022 June 2018 Examination Report No. 50-156/OL-18-01, University of Wisconsin-Madison ML18086B3102018-03-27027 March 2018 Examination Confirmation Letter 50-156/OL-8-01, Wisconsin ML17202D0782017-07-17017 July 2017 University of Wisconsin Nuclear Reactor Laboratory: 2016-2017 Annual Report IR 05000156/20172012017-06-0505 June 2017 University of Wisconsin - Nuclear Regulatory Commission Routine Inspection Report 05000156/2017201 ML17104A0982017-04-19019 April 2017 Non-Power Reactor Closeout of Generic Letter 2016-01, Monitoring of Neutron Absorbing Materials in Spent Fuel Pools University of Wisconsin Docket No. 50-156 (CAC No. A11010) ML16286A2352016-10-0505 October 2016 Univ. of Wisconsin - Madison, Response to NRC Generic Letter 2016-01 Monitoring of Neutron-Absorbing Materials in Spent Fuel Pools ML16209A4732016-08-11011 August 2016 University Of Wisconsin - U.S. Nuclear Regulatory Commission Routine Inspection Report 05000156/2016202 ML16217A4602016-07-29029 July 2016 University of Wisconsin, Submittal of Annual Operating Report 2015-2016 Fiscal Year ML16138A3072016-05-23023 May 2016 IR 05000156/2016-201 - May 2-5, 2016 - University Of Wisconsin - Nuclear Regulatory Commission Security Inspection Report ML16096A1552016-04-0707 April 2016 Examination Notification Letter No. 50-156/OL-16-01,University of Wisconsin ML15218A0302015-07-31031 July 2015 University of Wisconsin, Madison - Transmittal of the 2014-2015 Annual Operating Report IR 05000156/20152012015-06-24024 June 2015 IR 05000156/2015201 - 06/08/15 - 06/11/15, University of Wisconsin- NRC Routine Inspection ML14290A4862015-06-0303 June 2015 Y020140127 - Withdrawal of Order EA-05-007, Order Imposing Additional Security Measures ML15055A5962015-02-20020 February 2015 Technical Specification 6.7.2(2)(a), Change in Operating Organization ML14204A0752014-07-18018 July 2014 Transmittal of 2013-2014 Annual Report for University of Wisconsin Nuclear Reactor Laboratory IR 05000156/20142012014-06-19019 June 2014 IR 05000156-14-201 on May 19-22, 2014, at the University of Wisconsin - NRC Routine Inspection Report No. 50-156/2014-201 ML14139A5592014-05-27027 May 2014 University of Wisconsin - Change of Facility Project Manager ML13294A0242013-10-17017 October 2013 University of Wisconsin Nuclear Reactor Violation of Technical Specification 6.1.3(i) (a) and Technical Specification 6.6.2(1) 14 Day Follow Up Special Report to Event Notification Report Number 49409 in Accordance with Technical Specificat IR 05000156/20132012013-08-27027 August 2013 IR 05000156-13-201 on August 5-8, 2013 at the University of Wisconsin - NRC Routine Inspection Report ML13226A0702013-08-12012 August 2013 Rescission of Certain Security Orders Concerning Spent Nuclear Fuel in Transit ML13225A4962013-08-0909 August 2013 Transmittal of 2012-2013 Annual Report for University of Wisconsin Nuclear Reactor Lab ML12229A5152012-08-14014 August 2012 10 CFR 50.74; Notification of Change in Operator or Senior Operator Status IR 05000156/20122022012-08-0909 August 2012 IR 05000156-12-202 on July 9-12, 2012 at the University of Wisconsin - Transmittal Letter for NRC Security-Related Inspection Report No. 50-156/2012-202 IR 05000156/20122012012-08-0909 August 2012 IR 05000156-12-201 on July 9-12, 2012 at the University of Wisconsin - NRC Routine Inspection Report No. 50-156/2012-201 2023-08-01
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tNuclear Reactor Laboratory UWNR University of Wisconsin-Madison 1513 University Avenue, Room 1215 ME, Madison, WI 53706-1687, Tel: (608) 262-3392, FAX: (608) 262-8590 email: reactor@engr.wisc.edu, http://reactor.engr.wisc.edu November 22, 2010 RSC 1070 United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555
Subject:
Docket 50-156, License R-74 Response to Request for Additional Information for License Renewal to Facility License No. R-74 University Of Wisconsin Nuclear Reactor TAC No. ME1585 (Technical RAI)
Dear Sirs:
By letter, dated October 26, 2010, the Commission has requested additional information in order to complete the review for the University of Wisconsin Nuclear Reactor's (UWNR) request to renew facility license number R-74.
Enclosed are the responses to the request for additional information. The responses are provided in the same order as the Commission's requests. The format of the enclosure is to restate the request followed by the response. The original request is counter shaded to aid in the separation between request and response.
I certify under penalty of perjury that the foregoing is true and correct.
Since y Executed on: Z e/*
Robert J. gaise Reactor Director Enclosure L'Wýz
UWNR Response to NRC Request for Additional Information NRC RAI:
PrpsdTS321 'Operable Control Rods,'allows operation with ~a rninidmurni of three .
control elements with scramn capability:ý However, the ev'aluation in the Safety An~alysis eportfoof thighenriche uranium to low enriched uranium fuel shows that pin: power and peaking factors~ (arid tihe resulting thermall hydraulic
,calculation~s)were6etermiedk*withethe controlblades banked. Please provide ananalysis thatshows tatt reactor operation isacceptable w control .......... by proposed TS 3 2,1.
Licensee's Response:
It is the facility's intention to operate the reactor at full power with all five control elements operable and banked to ensure uniform fuel burn up. However, it is conceivable that operations may be necessary with the regulating blade and one control element with scram capability out of service due to equipment failure or maintenance, especially since the facility does not possess any spare control element drive components.
The MCNP model from the LEU Conversion SAR was used to calculate maximum pin powers that would result from having the regulating blade and one control element with scram capability out of.service. Placing the out of service control elements in their most extreme positions of either fully inserted or fully withdrawn are bounding since any intermediate position would bring the out of service control element closer to the bank thereby flattening the flux gradient.
The table below indicates the 1.0MW bank height of the remaining three control elements and the resulting maximum pin power at licensed full power. The table also indicates the maximum pin power in the event of a reactor power excursion up to the Limiting Safety System Setting of proposed TS 2.2.2 plus 2% uncertainty, or 1.3MW.
As shown in section 4.7.7 of the LEU Conversion SAR, table 4.7.12, page 111, the design basis maximum pin power is 29.04kW which corresponds to a MDNBR of 1.818 (Groneveld 2006) and 1.211 (Bernath) as shown in table 4.7.13, page 114. As can be seen in the table below the design basis maximum pin power, and therefore the resulting thermal-hydraulic analysis, bounds all conditions with the regulating blade and one control element with scram capability out of service.
It must be noted that the resulting change in pin power peaking factors may preclude currently acceptable physical positions for the location of the IFE as indicated in figure 4.7.39 on page 109 of the LEU Cbnversion SAR. However, proposed TS 2.2.1, requires the IFE to be placed in locations with a pin power peaking factor between 0.87 and 1.16 for a limiting safety system setting (LSSS) of 4000 C or a peaking factor at least 1.16 for a LSSS of 500'C. The model has identified what locations are acceptable but the resulting core maps have not been included for the sake of brevity.
Control Remaining Maximum Pin Maximum Pin Elements Out of Service Elements Power at Power at Out of Service Position Bank Height 1MW 1.3MW
[inches] [kW] [kW]
T-rod rBd Full IN Full IN 14.00 17.09 22.22 Reg. Blade Full IN T-rod Full IN1301722.4 Reg. Blade Full OUT 1.0 72 24 T-rod Full OUT 11.00 21.82 28.37 Reg. Blade Full IN T-rod Full OUT Reg. Blade Full OUT 10.50 21.91 28.48 Blade 1 Re.BaeFlFull IN N16.00 21.50 27.95 Blade 1 Full IN 15.00 21.16 27.51 Reg. Blade Full OUT Blade 1 Full OUT 11.50 18.93 24.61 Reg. Blade Full IN Blade 1 Full OUT 11.00 18.68 24.28 Reg. Blade Full OUT Blade 2 Full IN Reg. Blade Full IN 16.00 21.84 28.39 Blade 2 Full OUT Blade2 FullOUT 11.50 18.85 24.51 Reg. Blade Full IN Blade 2 FullIOUT 11.00 18.60 24.18 Reg. Blade Full OUT Blade 3 Full IN Reg. Blade Full IN 16.00 21.38 27.79 Blade 3 Full IN Reg. Blade Blade Full OUT 3 Full OUT 11.00 18.82 24.47 Reg. Blade Full IN Blade 3 Full OUT Reg. Blade Full OUT 1 1 2