ML17209A738

Submittal of Annual Operating Report for the University of Utah Triga Nuclear Reactor for the Period of July 1, 2016 Through June 30, 2017

ML17209A738
Person / Time
Site:	University of Utah
Issue date:	07/12/2017
From:	Schow R Univ of Utah
To:	Document Control Desk, Office of Nuclear Reactor Regulation
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Download: ML17209A738 (11)

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THEU UNIVERSITY OF UTAH Utah Nuclear Engineering Program 50 S. Central Campus Drive, Suite 2298 Salt Lake City, Utah 84112 801-581-4188 Fax 801-585-5477 July 12, 2017 U.S. Nuclear Regulatory Commission

• Document Control Desk Washington, D.C. 20555 To whom it may concern:

Enclosed please find the Annual Operating Report for the University of Utah TRIGA Nuclear Re~ctor, License No. R-126, Docket number 50-407, for the period of 1July2016 through 30 June 2017. This report fulfills the requirements of the TRIG A Technical Specifications 6.7.1.

If there are any further questions or concerns regarding this report, please contact me at (801) 581-4188.

Respectfully, Ryan C. Schow Reactor Supervisor, University of Utah Nuclear Engineering Program 50 South Central Drive, Room 1206 The University of Utah, Salt Lake City, UT 84112 Phone: 801.581.4188 E-mail: ryan.c.schow@utah.edu URL: http://www.nuclear.utah.edu

• Cc: Xiaosong Yin, USNRC Craig Bassett, USNRC

UUTR Annual Report 1 July 2016 - 30 Jun 2017 The University of Utah TRI GA Reactor (UUTR)

Annual Operating Report for the period 1 July 2016 through 30 June 2017 Ryan C. Schow, UUTR Supervisor Utah Nuclear Engineering Program (UNEP) 1

UUTR Annual Report 1July2016 - 30 Jun 2017 A. NARRATIVE

1. Operating Experience The University of Utah TRIGA Reactor (UUTR), License No. R-126, Docket No. 50-407, was critical for 92.585 hours0.00677 days <br />0.163 hours <br />9.672619e-4 weeks <br />2.225925e-4 months <br /> and generated 1,775.232 kilowatt-hours of thermal energy during this reporting year. The reactor was used for educational demonstrations and training, laboratory experiments, reactor systems tests, reactor power measurements and sample irradiations.

2. Changes in Facility Design No major changes to the facility occurred during this reporting period.

3. Surveillance Tests Documentation of all surveillance activities is retained and stored by the facility.

a. Control Rod Worth Table 1. Summary of control rod worth, SDM, and ER Core

1. 24-B

1. 24-B Configuration 12/9/16 2/28/17 Date Worth f$l Worth f$l Safety Rod 2.193 2.160 Shim Rod 1.440 1.423 Regulating Rod 0.283 0.283 Excess Reactivity 0.686 0.666 Shutdown Margin 1.037 1.040

b. Control Rod Inspection The biennial control rod inspection was performed during May of 2016 and was not required to be performed from July 1, 2016 to June 30, 2017.

c. Reactor Power Level Instrumentation Calorimetric power calibrations were performed on 10/5/16, 10/7 /16 and 3/3/17 with the results shown in Table 2. The calibration performed on 10/5/16 was completed at a lower power level of 50 kW due to replacement of ion-chambers and maintenance. The percent power indication was much higher than the thermal power calculated results due to a new chamber and placement of that chamber. The percent power chamber was moved physically further from the core and a follow-Utah Nuclear Engineering Program (UNEP) 2

UUTR Annual Report 1 July 2016 - 30 Jun 2017 up calibration was performed on 10/7 /16. The adjustment of the percent power monitoring channel procedure was performed on 10/12/16 following the calorimetric results received on 10/7 /16.

Table 2. Summary of calorimetric power calibrations Date Percent Power Linear Power Thermal Calculated Indication Indication Power Level 10/5/16 96.8 50.0 50.7 10/7/16 85.0 90.0 89.9 3/3/17 89.3 90.0 90.7

d. Fuel Inspection The biennial fuel inspection was performed during April and May of 2016 and was not required to be performed from July 1, 2016 to June 30, 2017.

e. Fuel Temperature Calibration Fuel temperature circuits were calibrated on 9/2/16 and 2/7 /17. The circuits were calibrated to less than or equal to 2°C error over the range from 20 °C to 400 °C.

f. Reactor Safety Committee (RSC) Audits Three RSC audits were completed during this reporting period. The data are shown in Table 3. No significant deviations from normal operating practices were identified by these audits.

a e. u 1tsummarv Ti bl 3 A d' Audit Period Auditor Operation and 1 Jan. 2016 to 30 Jun. 2016 James M. Byrne Maintenance Radiation Safety and 1 Jul. 2015 to 30 Nov. 2016 Fred Monette ALARA Operation and 1 Jul. 2016 to 31 Dec. 2016 James M. Byrne Maintenance

g. Environmental Surveys Eight environmental monitors are located in the areas surrounding the UUTR. A maximum exposure of 36 mrem in a quarter to an environmental dosimeter located in the Building 80 was measured. Table 4 shows the average dose recorded in last five years.

Utah Nuclear Engineering Program (UNEP) 3

UUTR Annual Report 1July2016 - 30 Jun 2017 Table 4. Summary of environmental monitorin.Q around the UUTR Year Average quarterly readings for the 8 environmental monitors ( mrem 1 2016 31.18 2015 32.06 2014 33.81 2013 33.88 2012 35.56 2011 35.13 B. ENERGY OUTPUT The UUTR reactor was critical for 92.585 hours0.00677 days <br />0.163 hours <br />9.672619e-4 weeks <br />2.225925e-4 months <br /> and produced 0.07 4 megawatt*days (1,775.232 kilowatt* hours) of energy during this reporting period. Since initial criticality, the reactor has been operated for a total of 3975.281 hours0.00325 days <br />0.0781 hours <br />4.646164e-4 weeks <br />1.069205e-4 months <br /> with an accumulated total energy output of 9.416 megawatt*days (225981.813 kilowatt*hours).

C. EMERGENCY SHUTDOWNS AND INADVERTENT SCRAMS:

There were five inadvertent SCRAMs that occurred during this period:

12/9/16, 1/10/17, 1/17 /17, and two on 4/6/17, because of erratic indication when operating the linear power selector switch. Summary of the inadvertent scrams and unplanned shutdowns is given in Table 5.

Table 5. Summarv oflnadvertent SCRAMS and Unplanned Shutdowns Date Run

_Type Cause Action Number 12/9/16 1914 Linear Linear power indication Reactor power Power oscillated when selector switch operating the reactor examined power selector switch 1/10/17 1916 Linear Linear power indication Reactor power Power oscillated when selector switch operating the reactor examined power selector switch 1/17/17 1918 Linear Linear power indication Reactor power Power oscillated when selector switch operating the reactor examined power selector switch 4/6/17 1939 Linear Linear power indication Reactor power Power oscillated when selector switch operating the reactor examined power selector switch Utah Nuclear Engineering Program (UNEP) 4 I

UUTR Annual Report 1July2016 - 30 Jun 2017 D. MAJOR MAINTENANCE The log power and period control electronic circuit was replaced in September 2016 E. CHANGES, TESTS AND EXPERIMENTS PURSUANT TO 10 CFR 50.59 None.

F. REACTOR SAFETY COMMITTEE As of the end of the reporting period, the current members of the RSC as designated by the Licensee are as follows:

James M. Byrne, Chair Tatjana J evremovic Fred Monette, RSO of University of Utah Ryan Schow, Reactor Supervisor Donald Wall Rian Smith Benjamin Huffman The UNEP staff continues to review and update facility documentation to assure compliance with all applicable regulations.

G. RADIOACTIVE EFFLUENTS

1. Liquid Waste Total activity released: none

2. Gaseous Waste Total estimated activity released: 22.102 µCi.

The UUTR was operated for 92.585 hours0.00677 days <br />0.163 hours <br />9.672619e-4 weeks <br />2.225925e-4 months <br /> at power levels up to approximately 90 kW. At this power level Ar-41 production is substantially below MPC values for unrestricted areas. The minimum detectable concentration of Ar-41 from the CAM system for the stack monitor has been found to be less than two-third of 10 CFR 20 appendix B limits for release to unrestricted areas. The average annual calculated concentration of Ar-41 generated during operation is estimated to be 9.83x10-11 µCi/ml that is approximately 0.0033 % of the DAC. The total amount of Ar-41 released was estimated to be 22.102 µCi. No phosphorus-32 was released from the UUTR and associated facilities during this period. The total amount of all gaseous radioactivity released Utah Nuclear Engineering Program (UNEP) 5

UUTR Annual Report 1July2016 - 30 Jun 2017 Month Jul 16 Aug16 Sep 16 Oct16 Nov16 Dec 16 Jan 17 Feb 17 Mar17 Apr17 Mav17 Jun 17 Total was estimated to be 22.102 µCi. A monthly summary of gaseous releases is given in Table 6. Total activity of gaseous effluent was therefore 22.102

µCi.

Table 6. Summarv of Monthly Gaseous Radioactive Effluent Power Ar-41 (µCi)

Ar-41 (µCif ml)

Estimated Release

% ofDAC (kWh)

P-32 and all others 0.628 0.008 3.47746E-14 0

0%

0.219 0.003 1.21268E-14 0

0%

1.43 0.018 7.91843E-14 0

0%

313.071 3.898 1.73359E-11 0

0.0006%

143.969 1.792 7.97209E-12 0

0.0003%

178.126 2.218 9.86348E-12 0

0.0003%

262.613 3.270 1.45418E-11 0

0.0005%

91.66 1.141 5.07555E-12 0

0.0002%

511.197 6.364 2.83068E-11 0

0.0009%

272.319 3.390 1.50793E-11 0

0.0005%

0 0

0 0

0%

0 0

0 0

0%

1775.232 22.102 9.8301E-11 0

0.0033%

3. Solid Waste - Total activity: None No solid waste material was sent to the Radiation Safety for disposal during the period of 1 July 201 through 30 June 2017.

H. PERSONNEL RADIATION EXPOSURES UNEP Personnel The University of Utah Radiation Safety has issued to all personnel with duties in the reactor laboratory on either a regular or occasional basis an OSL dosimeter. The duty category and monitoring period of personnel are summarized in Table 7. A summary of the whole-body exposures to the UNEP personnel is presented in Table 8.

Measured Doses 7 /1/16-6/30/17 Doses: 9 mrem average; 16 mrem highest measured Dose Equivalent Limit Maximum Permissible Dose Equivalent= 5000 mrem/year (1250/quarter).

Minimum Detectable Dose per Monthly Badge = 1 mrem.

Visitors Six hundred and eighty-three (683) individuals visited the reactor facility Utah Nuclear Engineering Program (UNEP) 6

UUTR Annual Report 1July2016 - 30 Jun 2017 during the period 1July2016 to 30 June 2017. None of the visitors received a measurable dose.

Table 7. Summary of Monitored Personnel Name Monitoring Duty Category Period Albright, Lucas 07 /01/16-Regular 6/30/17 Allred, Michael 07 /01/16-Regular 6/30/17 Burak, Adam 07 /01/16-Regular 6/30/17 Burnham, Steven 07 /01/16-Regular 6/30/17 Craynor, Elliott.

01/01/17-Regular 6/30/17 Curtis, Jonathan 01/01/17-Regular 6/30/17 Cutic, Avdo 07 /01/16-Regular 6/30/17 Doane, Samuel 07 /01/16-Regular 6/30/17 Dupre, Jean-07 /01/16-Regular Nicolas 6/30/17 Faure, Quentin 07 /01/16-Regular 6/30/17 Fitzhugh, Richard 07 /01/16-Regular 6/30/17 Foley, Amanda 07 /01/16-Regular 6/30/17 Gallagher, Joshua 10/01/2016-Regular 6/30/17 Han,Dahee 07 /01/16-Regular 6/30/17 Horvath, David 07/01/16-Regular 6/30/17 J evremovic, 07 /01/16-Regular Tatjana 6/30/17 Kanno, Nicholas 07 /01/16-Regular 6/30/17 utah Nuclear Engineering Program (UNEP) 7

UUTR Annual Report 1July2016 - 30 Jun 2017 Kavouras, John 07 /01/16-Regular 6/30/17 Kim, Donghoon 07 /01/16-Regular 6/30/17 Lai, Trent 07 /01/16-Regular 6/30/17 Lintereur, Azaree 07 /01/16-Regular 6/30/17 Lund, Matthew 07 /01/16-Regular 6/30/17 Novy, Rebecca 07 /01/16-Regular 6/30/17 Okabe, Parker 07 /01/16-Regular 6/30/17 Olsen, Calan 01/01/17-Regular 6/30/17 Palmer, Alan 01/01/17-Regular 6/30/17 Porter, J oCee 07 /01/16-Regular 6/30/17

Reinhart, 07 /01/16-Regular Cameron 6/30/17 Saenz, Brittney 07 /01/16-Regular 6/30/17 Schow, Ryan C 07 /01/16-Regular 6/30/17 Takasugi, Cole 07 /01/16-Regular 6/30/17 Thomas, Bryce 01/01/17-Regu,lar 6/30/17 Thomas, Ryan 01/01/17-Regular 6/30/17 Tuttle, Jacob 04/01/17-Regular 6/30/17 Winkle, Samantha 07 /01/16-Regular 6/30/17 Wu, Tingshiuan 01/01/17-Regular 6/30/17 Wilson, Dylan 07 /01/16-Regular /Terminated 12/31/16 Utah Nuclear Engineering Program (UNEP) 8

UUTR Annual Report 1July2016 - 30 Jun 2017 Alroumi, Fawaz 07 /01/16-Regular /Terminated 12/31/16 Flygare, Joshua 07 /01/16-Regular /Terminated 12/31/16 Gee, Wimonphan 07 /01/16-Regular /Terminated 12/31/16 Hatfield, Andrew 07 /01/16-Regular /Terminated 12/31/16 Hawkins, Casey 07 /01/16-Regular /Terminated 12/31/16 Heffernan, Sean 10/01/16-Regular /Terminated 12/31/16 Hinrichs, Benny 07 /01/16-Regular /Terminated 12/31/16 King, Travis 07 /01/16-Regular /Terminated 12/31/16 Lee,Sangkyu 07 /01/16-Regular /Terminated 12/31/16 Levinthal, Joseph 07 /01/16-Regular /Terminated 12/31/16 Lusk, Robert 07 /01/16-Regular /Terminated 12/31/16 McDonald, Luther 07 /01/16-Regular /Terminated 12/31/16 Morgan, David 07 /01/16-Regular /Terminated 12/31/16 Olsen, Adam 07 /01/16-Regular /Terminated 12/31/16 Rapich, Jason 07 /01/16-Regular /Terminated 12/31/16 Schwerdt, Ian 07 /01/16-Regular /Terminated 12/31/16 Tamplin, Michelle 07 /01/16-Regular /Terminated 12/31/16 Minko, Aliaksei 07 /01/16-Regular /Terminated 4/30/17 Utah Nuclear Engineering Program (UNEP) 9

UUTR Annual Report 1July2016 - 30 Jun 2017 Table 8. Summary of whole bodv exposures to the UNEP personnel Estimated whole body exposure Number of individuals in range (reml each range Less than 0.1 55 0.10 to 0.25 0

0.25 to 0.50 0

0.50 to 0.75 0

0.75to1.00 0

1.00 to 2.00 0

2.00 to 3.00 0

3.00 to 4.00 0

4.00 to 5.00 0

Greater than 5 rem 0

I. LABORATORY SURVEYS Monthly surveys of the facility were conducted by the University of Utah Radiation Safety during the reporting period. The surveys have not indicated any unusual radiation levels over previous years. Records of surveys are retained by the facility.

J. ENVIRONMENTAL STUDIES Environmental monitoring conducted by the University of Utah Radiation Safety indicated no unusual dose rates in the areas surrounding the Merrill Engineering Building, which houses the UUTR reactor facility.

Prepared by:

Submitted by:

Ryan Schow µ(.,#-

Reactor Supervisor Ryan Schow A#-'

Reactor Supervisor Utah Nuclear Engineering Program (UNEP)

Date: 7 /12/2017 Date: 7 /12/2017 10