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MONTHYEARML0918106852009-08-14014 August 2009 Texas a & M (Triga) University, Change of Facility Project Manager Effective 04/01/2009 to William Schuster Project stage: Other ML11154A0842011-05-18018 May 2011 Response to Texas A&M University - Follow -Up on Request for Additional Information Regarding the Texas A&M University AGN-201M Reactor (TAC No. ME1588), October 9, 2009 Project stage: Request ML11250A0982011-08-25025 August 2011 Response to Request for Additional Information Regarding the Texas A&M University AGN-201M Reactor License Renewal Application Project stage: Response to RAI ML11272A1272011-09-19019 September 2011 Response to Texas A&M University - Request for Additional Information Regarding the Texas A&M University AGN-201M Reactor License Renewal Application (TAC No. ME1588), July 25, 2011. Project stage: Request ML11326A1872011-11-10010 November 2011 Response to Texas A&M University - Request for Additional Information Re License Renewal Application Project stage: Request ML11347A3632011-12-0202 December 2011 Response to Texas A&M University - Request for Additional Information Regarding the Texas A&M University AGN-201M Reactor License Renewal Application, July 25, 2011 Project stage: Request ML12018A1692011-12-22022 December 2011 Response to Texas A&M University - Request for Additional Information Regarding the Texas A&M University AGN-201 M Reactor License Renewal Application (Tac. No. ME1588), July 25,2011 Project stage: Request ML1202600102012-01-26026 January 2012 Texas A&M University - Approval of Request for an Extension, Response to NRC Request for Additional Information Dated July 25, 2011 (Tac No. ME1588) Project stage: RAI ML12060A0342012-02-15015 February 2012 Response to Texas A&M University - Request for Additional Information Regarding the Texas A&M University AGN-201M Reactor License Renewal Application, July 25, 2011 Project stage: Request ML12128A4282012-04-12012 April 2012 Response to Texas A&M University - Request for Additional Information Regarding the Texas A&M University AGN-201M Reactor License Renewal Application (TAC No. ME1588). Project stage: Request ML12312A2322012-12-0606 December 2012 Texas a & M University - Additional Clarification Requested Responses to NRC Request for Additional Information Dated July 25, 2011 Project stage: RAI ML13073A1222013-03-0606 March 2013 Texas A&M University, Additional Clarification to Responses to NRC Request for Additional Information Regarding the Review of AGN-201M Research Reactor License Renewal Project stage: Response to RAI ML13137A3382013-06-0606 June 2013 Texas A&M University - Financial Update Request for Additional Information Regarding the Review of the Texas A&M University AGN-201M Research Reactor License Renewal Project stage: RAI ML13193A0122013-06-28028 June 2013 Suspension of Texas A&M AGN-201M Reactor Operations Project stage: Request ML13189A0582013-07-30030 July 2013 Texas A&M University Aerojet General Nucleonics Model 201-Modified Reactor, Confirmatory Action Letter Regarding Shutdown Related to Reactor Safety System Project stage: Other ML14015A3152013-12-17017 December 2013 Response to Texas A&M University Aerojet General Nucleonics Model 201-Modified Reactor Confirmatory Action Letter Regarding Shutdown Related to Reactor Safety System Project stage: Request ML14087A0062014-03-10010 March 2014 Response to Texas A&M University Aerojet General Nucleonics Model 201-Modified Reactor Confirmatory Action Letter Regarding Shutdown Related to Reactor Safety System Project stage: Request ML14105A4422014-05-23023 May 2014 Texas A&M University Acknowledging Commitments in CAL No. EA-2013-154 to Address Shutdown Related to Reactor Safety System Project stage: Other 2012-12-06
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Category:Letter
MONTHYEARML24129A1852024-05-0808 May 2024 Tees - License Management Change for the Reactors ML23350A0072023-12-16016 December 2023 Texas A&M University Engineering Experiment Station, Nuclear Engineering & Science Center (Tees) Submittal of Revised Emergency Plan ML23344A0012023-12-10010 December 2023 Texas A&M Univ., License Management Change ML22226A0012022-06-24024 June 2022 Texas A&M Univ., License Amendment Request Re Management Change IR 05000059/20212012021-10-25025 October 2021 Texas A&M University - U.S. Nuclear Regulatory Commission Routine Inspection Report No. 05000059/2021201 IR 05000059/20212022021-10-20020 October 2021 Texas A&M University - U.S. Nuclear Regulatory Commission Security-Related Inspection Report No. 05000059/2021202 (Letter) ML21256A3042021-09-13013 September 2021 Notification of Changes in License Level Personnel for the Texas A&M Experiment Station NSCR (R-83) and the Texas A&M University Agn (R-23) ML20295A4242020-11-16016 November 2020 Notification of Mailing Address Change Regarding Submittal of Fingerprint Cards IR 05000059/20182012018-10-19019 October 2018 Texas A&M University - U.S. Nuclear Regulatory Commission Routine Inspection Report No. 50-059/2018-201 IR 05000059/20172012018-03-0808 March 2018 Texas A&M University - U.S. Nuclear Regulatory Commission Security-Related Inspection Report No. 05000059/2017-201 - Cover Letter (Public) ML17031A1142017-06-30030 June 2017 Letter to Dr. Sean M. Mcdeavitt Response to Fee Waiver (Texas A&M University) ML16362A3172017-01-19019 January 2017 Texas A&M University - Issuance of Amendment No. 16 to Amended Facility Operating License No. R-23 to Modify License Conditions and Technical Specifications to Allow for the Unrestricted Use of Zachry Engineering Building ML17005A4162017-01-12012 January 2017 Letter - EA and Finding of No Significant Impact Regarding Amendment No.16 for Facility Operating License R-23 ML17010A0572017-01-0909 January 2017 Texas A&M Univ. - Final Status Survey Report Supplemental Information for the Zachry Engineering Center ML16351A5022016-12-16016 December 2016 to the November 21, 2016 License Amendment Request for the Approval of the Unrestricted Release of the Zachry Engineering Center and Changes to the AGN-201M Facility License No. R-23, Docket 50-59, License and Technical Specifications ML16352A0002016-12-16016 December 2016 Texas A&M University - Final Status Survey Report for the Zachry Engineering Center in Support of the November 21, 2016 License Amendment Request for AGN-201M ML16326A4472016-11-21021 November 2016 License Amendment Request for the Approval of the Unrestricted Release of the Zachry Engineering Center and Changes to the AGN-201M Facility License No. R-23, Docket 50-59, Technical Specification Sections 5.2 and 5.3 ML16316A0022016-11-10010 November 2016 Final Status Survey Plan Revision 1 for the Unrestricted Release of the Zachry Engineering Center ML16305A1962016-10-31031 October 2016 Texas A&M Triga and Agn Response to Us NRC Generic Letter 2016-01 ML16299A4092016-10-25025 October 2016 Texas A&M University (Tamu) - Fee Exemption Request for Review and Approval for a Model 9979 Type AF Shipping Package ML16299A5372016-10-18018 October 2016 Final Status Survey Plan for the Unrestricted Release of the Zachry Engineering Center ML16281A3802016-10-0707 October 2016 Changes to the Texas A&M University AGN-201M Technical Specifications, Facility License R-23, Docket Number 50-59 Associated with the November 11, 2016 License Amendment Request (ADAMS Accession No. ML15315A027) ML16279A0002016-10-0505 October 2016 Changes to the Texas A&M University AGN-201M Technical Specification Pages 11 and 14, Supporting the November 11, 2015, License Amendment Request for the AGN-201M Reactor ML16272A4932016-09-28028 September 2016 Texas A&M University - Fee Exemption Request for Review and Approval for a Model 9979 Type AF Shipping Package ML16272A4342016-09-27027 September 2016 Proposed Changes to Texas A&M University AGN-201M Technical Specification Page 15 Associated with License Amendment Request Dated November 11, 2015, for the AGN-201M Reactor ML16237A4392016-08-24024 August 2016 Texas A&M Engineering Experiment Station - Quality Assurance Program for the Model 9979 Type AF Shipping Package, Certificate Number 9979, Revision 0 ML16237A4402016-08-24024 August 2016 Texas A&M University - Proposed Changes to AGN-201M Technical Specification Table of Contents Associated with License Amendment Request Dated 11/11/2015, for AGN-201M Reactor ML16161A0042016-06-21021 June 2016 Examination Report No. 50-059/OL-16-01, Texas A&Amp;M University AGN-201 ML16169A3462016-06-17017 June 2016 Supplemental Information Regarding Texas A&M University License Amendment Request Dated November 11, 2015, for the AGN-201M Reactor ML16155A3882016-06-0303 June 2016 Supplemental Information Regarding Texas A&M University License Amendment Request Dated November 11, 2015 for the AGN-201M Reactor ML16162A1692016-06-0202 June 2016 Texas A&M University, Letter Regarding Change of Reviewing Officials ML16098A0772016-04-21021 April 2016 Texas A&M University - U.S. Nuclear Regulatory Commission Inspection Report 05000059/2016201, March 21�24, 2016 ML16063A3842016-03-0303 March 2016 Texas A&M Univ. - Response to Request for Additional Information from the NRC, Dated February 16, 2016, Regarding License Amendment Request Dated November 11, 2015 ML16032A0222016-02-16016 February 2016 Texas A&M University - Request for Additional Information re License Amendment Request on Interim Storage of Special Nuclear Material ML16043A0482016-02-0808 February 2016 Texas A&M Univ. - Notification of Delegation of Level 2 Authority ML15315A0272015-11-11011 November 2015 Texas A&M Univ. - License Amendment Request for AGN-201M Reactor to Approve Changes to Technical Specification 5.2 and 5.3 Authorizing Interim Storage of the Special Nuclear Material and the Disassembled AGN-201M Reactor on the Tx A&M Engin ML14290A4862015-06-0303 June 2015 Y020140127 - Withdrawal of Order EA-05-007, Order Imposing Additional Security Measures IR 05000059/20152022015-04-24024 April 2015 Texas A&M University - NRC SECURITY-RELATED Inspection Report No. 50-059/2015-202 ML15183A4622015-04-15015 April 2015 Texas A&M Univ. - Letter Providing Overview of Planned Activities to Disassemble and Temporarily Relocate the Agn 201M Reactor to the Nuclear Science Center Site ML15043A0332015-01-21021 January 2015 to Provide an Overview of Planned Major Construction Upgrades to the Zachry Engineering Center and Disposition of the Agn 201M Reactor ML14276A0332014-09-16016 September 2014 Response to Texas A&M University Request for Additional Information Regarding Aerojet General Nucleonics Model 201 Modified Reactor Confirmatory Action Letter No. EA-2013-154 ML14156A4082014-06-13013 June 2014 Texas A&M University - Request for Additional Information Regarding the Texas A&M AGN-201M Research Reactor Confirmatory Action Letter No. EA-2013-154 (TAC M79581) ML14136A4882014-05-27027 May 2014 Texas A&M University Agn - Change of Facility Backup Project Manager ML14105A4422014-05-23023 May 2014 Texas A&M University Acknowledging Commitments in CAL No. EA-2013-154 to Address Shutdown Related to Reactor Safety System ML14087A0062014-03-10010 March 2014 Response to Texas A&M University Aerojet General Nucleonics Model 201-Modified Reactor Confirmatory Action Letter Regarding Shutdown Related to Reactor Safety System ML14015A3152013-12-17017 December 2013 Response to Texas A&M University Aerojet General Nucleonics Model 201-Modified Reactor Confirmatory Action Letter Regarding Shutdown Related to Reactor Safety System ML13226A0702013-08-12012 August 2013 Rescission of Certain Security Orders Concerning Spent Nuclear Fuel in Transit ML13189A0582013-07-30030 July 2013 Texas A&M University Aerojet General Nucleonics Model 201-Modified Reactor, Confirmatory Action Letter Regarding Shutdown Related to Reactor Safety System ML13198A5742013-07-18018 July 2013 Examination Results No. 50-059/OL-13-01, Texas A&M University AGN-201 ML13198A5692013-07-18018 July 2013 Examination Report No. 50-059/OL-13-01, Texas A&M University Agn 201M Reactor 2024-05-08
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DWIGHT LOOK COLLEGE OF ENGINEERING Department of Nuclear Engineering
-UTXS &
April 12, 2012 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Docket No.50-059
SUBJECT:
Response to "Texas A&M University - Request For Additional Information Regarding the Texas A&M University AGN-201M Reactor License Renewal Application (TAC NO. ME1588)"
In response to the RAI dated July 25, 2011, the following questions are being submitted for review: 8,9,10, and 13.
If you have any questions, please do not hesitate to contact me at: (979) 845-4161, or e-mail at v-hassan@tamu.edu.
I declare under penalty of perjury that the foregoing is true and correct. Executed on April 12, 2012.
Sincerely, Yassi- Hrassan, Ph.D.
Interim Department Head Encl. (1) 337 Zachry Engineering Center.
3133 .TAMU College Station,TX 77843-3133 Tel. 979.845.4161 Fax. 979.845.6443 Gac nuclear.tamu.edu 0M
Texas A&M University AGN-201M License No. R-23 Docket No.50-059 Responses to Request for Additional Information Questions 8,9,10, and 13
- 8. The design change for the Channel #2 period function replaces two mechanical relays with a an optoisolator and solid state relay. The Keithley 4103 electronic trip and Potter and Brumfield relay KHS17D1 1 were replaced with solid state components. The new scram circuit is designed with an NTE3086 optoisolator and 74HC73 dual JK flip-flop with reset.
The NTE3086 optoisolator exhibits a saturated turn-on time of 5[ts and a saturated turn-off time of 25 hs. The 74HC73 chip has a typical propagation delay of 16ns with a maximum value of 41 ns. These response times are significantly faster than the previously installed equipment. The Keithley 4103 electronic trip is designed to have a response time of lOims.
The typical operating time of relay KHS I 7D 11 is 13ms with a typical release time of 6ms.
Given the large improvement in response time of the solid state components, there is no negative impact on safety margin.
- 9. The design change for the Channel #3 scram circuit replaces two mechanical relays with a an optoisolator and solid state relay. The Keithley 4103 electronic trip and Potter and Brumfield relay KHS 17D 11 were replaced with solid state components. The new scram circuit is designed with an NTE3086 optoisolator and 74HC73 dual JK flip-flop with reset.
The NTE3086 optoisolator exhibits a saturated turn-on time of 5[ts and a saturated turn-off time of 25ps. The 74HC73 chip has a typical propagation delay of 16ns with a maximum value of 4 lns. These response times are significantly faster than the previously installed equipment. The Keithley 4103 electronic trip is designed to have a response time of lOims.
The typical operating time of relay KHS 17D 11 is 13ms with a typical release time of 6ms.
Given the large improvement in response time of the solid state components, there is no negative impact on safety margin.
- 10. Solid state relays have replaced the relay circuits in the Channel #3 high power and low power trips, Channel #2 high power and low power trips, period trip, earthquake scram, and low reactor tank temperature trip. Replacing these relays did not have a negative impact on the circuit response time because the solid state relays that replaced the previous relay circuits are significantly faster. Channel #2 and #3 were previously discussed in other questions. The remaining trips two were equipped with KHP l7D 1I relays. The typical operation time of this relay is 25ms. These relay circuits were replaced with the same solid state circuit comprised of an NTE3086 optoisolator and 74HC73 chip. The NTE3086
optoisolator exhibits a saturated turn-on time of 5ps and a saturated turn-off time of 25pts.
The 74HC73 chip has a typical propagation delay of 16ns with a maximum value of 41 ns.
- 13. In the event that the computer becomes unresponsive to the reactor control system by "freezing", the watchdog circuit will reboot the computer if a new data packet is not
.received every 0.05 sec. When the computer is reset, the loss of indication of Ch. #2 and
- 3 to the scram bus will initiate a protective action. This watchdog scram ensures that the computer is operational during reactor operations. This scram does not have any impact on the safety analysis in SAR Chapter 13 because this scram is the same as a loss of signal to any safety channel.
This scram is initiated if new data packets are not received every 0.05 sec. or if the AGN computer control program is quit with the console power energized.
Proposed LCO Add T.S. 3.2.k 3.2.k The watchdog timer shall be installed during reactor operations Proposed Surveillance requirement Add T.S. 4.2.i 4.2.i The watchdog timer shall be tested annually.