ML14216A346

University of Utah, Submittal of Annual Operating Report for the Period of 1 July 2013 Through 30 June 2014

ML14216A346
Person / Time
Site:	University of Utah
Issue date:	07/23/2014
From:	Jevremovic T Univ of Utah
To:	Document Control Desk, Office of Nuclear Reactor Regulation
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Download: ML14216A346 (12)

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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 23, 2014 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 Reactor, License No. R- 126, Docket number 50-407, for the period of 1 July 2013 through 30 June 2014. This report fulfills the requirements of the TRIGA Technical Specifications 6.7.1.

If there are any further questions or concerns regarding this report, please contact me at (801) 587-9696.

Respectfully, Tatjana /emovic, Jev Ph.D.

Director

UUTR Annual Report 1 July 2013 - 30 Jun 2014 The University of Utah TRIGA Reactor (UUTR)

Annual Operating Report for the period 1 July 2013 through 30 June 2014 Ryan C. Schow, UUTR Supervisor Dr. Tatjana Jevremovic, UNEP & UUTR Director Utah Nuclear Engineering Program (UNEP)

UUTR Annual Report 1 July 2013 - 30 Jun 2014 A. NARRATIVE

1. Operating Experience The University of Utah TRIGA Reactor (UUTR), License No. R-126, Docket No. 50-407, was critical for 86.923 hours0.0107 days <br />0.256 hours <br />0.00153 weeks <br />3.512015e-4 months <br /> and generated 2348.601 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 samples irradiations.

2. Changes in FacilityDesign 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 #24-B #24-B #24-B #24-B Configuration 9/3/13 1/29/14 2/20/14 5/29/14 Date Worth ($) Worth ($) Worth ($) Worth ($)

Safety Rod 2.240 2.157 2.197 2.257 Shim Rod 1.483 1.450 1.453 1.483 Regulating Rod 0.267 0.267 0.270 0.273 Excess Reactivity 0.762 0.711 0.715 0.640 Shutdown Margin 0.988 1.006 1.008 1.116

b. Control Rod Inspection The biennial control rod inspection was performed during May of 2014 when control rods were sequentially removed from the reactor core for visual inspection. Rod drop times were measured on 9/3/13, 1/29/14, 2/20/14, and 5/29/14. All rod drop times were less than 1.09 seconds.

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TTUTR Annual Report 1 July 2013 - 30 Jun 2014

c. Reactor Power Level Instrumentation Calorimetric power calibrations were performed on 9/5/13, 3/12/14 and 6/2/14 with the results shown in Table 2.

Table 2. Summary of calorimetricpower calibration Date Measured % Calculated Power Level Power 9/5/13 93.0 93.29 3/12/14 92.7 93.24 6/2/14 93.2 98.25 The adjustment of power monitoring channels procedure was performed on 6/9/14 following the calorimetric results received on 6/2/14.

d. Fuel Inspection The biennial fuel inspection was performed during May of 2014 when each fuel element was visually inspected while keeping it submerged in reactor tank water in assuring the required shielding. No deterioration or excessive corrosion of in-core fuel elements was observed. Pool water is sampled and analyzed periodically for evidence of fission product activity indicative of defective or deteriorating fuel. Analyses of pool water following full-power reactor operations lasting several hours have not shown any indication of the presence of fission products.

e. Fuel Temperature Calibration Fuel temperature circuits were calibrated on 9/12/13 and 2/25/14. The circuits were calibrated to less than or equal a 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.

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UUTR Annual Report 1 July 2013 - 30 Jun 2014 Table 3. Audit summary

g. Environmental Surveys Nine environmental monitors are located in the areas surrounding the UUTR. A maximum exposure of 44 mrem in a quarter to an environmental dosimeter located in the building ERG was measured.

Table 4 shows the average dose recorded in last five years.

Table 4. Summary of environmentalmonitoring around the UUTR Year Average quarterly readings for the 8 environmental monitors (mrem) 2013 33.88 2012 35.56 2011 35.13 2010 36.00 2009 34.56 2008 39.26 2007 37.94 B. ENERGY OUTPUT The UUTR reactor was critical for 86.923 hours0.0107 days <br />0.256 hours <br />0.00153 weeks <br />3.512015e-4 months <br /> and produced 0.0979 megawatt-days (2348.601 kilowatt.hours) of energy during this reporting period. Since initial criticality, the reactor has been operated for a total of 3786.877 hours0.0102 days <br />0.244 hours <br />0.00145 weeks <br />3.336985e-4 months <br /> with an accumulated total energy output of 9.227 megawatt-days (221437.528 kilowatt-hours).

C. EMERGENCY SHUTDOWNS AND INADVERTENT SCRAMS:

There were four inadvertent SCRAMs that occurred during this period:

2/5/14, 2/26/14, 3/4/14, and 3/25/14, because of static discharge in the reactor power selector switch. An unplanned shutdown occurred on 6/24/14 due to an unexpected drop of the safety control rod. This was due to a burnt out light bulb in the magnet light for the safety control rod.

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UUTR Annual Report 1 July 2013 ~ 30 Jun 2014 There were no emergency shutdowns. Summary of the inadvertent scrams and unplanned shutdowns is given in Table 5.

Table 5. Summary of InadvertentSCRAMS and UnplannedShutdowns Date Run Type Cause Action Number 02/05/14 1837 Linear Linear power indication Reactor power Power oscillated when selector switch operating the reactor examined power selector switch due to static discharge 02/26/14 1841 Linear Linear power indication Cycled reactor Power oscillated when power selector operating the reactor switch and power selector switch oscillations due to static discharge stopped.

03/04/14 1842 Linear Linear power indication Reactor power Power oscillated when selector switch was operating the reactor rebuilt to ensure power selector switch proper operation of due to static discharge switch 03/25/14 1846 Linear Linear power indication Reactor Operators Power spiked when operating were trained on the reactor power proper crisp selector switch due slow operations of switch operation reactor power selector switch 06/24/14 1859 Dropped Magnet light bulb on Replaced magnet Safety reactor console burned light bulb Rod out, which cut the circuit to the magnet on the control rod, thereby dropping the safety control rod and shutting down the reactor.

D. MAJOR MAINTENANCE None.

E. CHANGES, TESTS AND EXPERIMENTS PURSUANT TO 10 CFR 50.59 None.

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UUTR Annual Report 1 July 2013 - 30 Jun 2014 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 Jevremovic, Director UNEP and UUTR Karen Langley, RSO of University of Utah Ryan Schow, Reactor Supervisor Donald Wall Rian Smith Benjamin Huffman Robert J. Huber 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: 29.240 [tCi.

The UUTR was operated for 86.9227 hours0.107 days <br />2.563 hours <br />0.0153 weeks <br />0.00351 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 bel.3005x10-1° ýtCi/ml that is approximately 0.004 % of the DAC. The total amount of Ar-41 released was estimated to be29.240 [tCi. No phosphorus-32 was released from the UUTR and associated facilities during this period. The total amount of all gaseous radioactivity released was estimated to be 29.240 [tCi. A monthly summary of gaseous releases is given in Table 6. Total activity of gaseous effluent was therefore29.240

[tCi.

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UUTR Annual Report 1 July 2013 - 30 Jun 2014 Table 6. Summary of Monthly Gaseous Radioactive Effluent Month Power Ar-41 ([tCi) Ar-41 ([tCi/ml) Estimated Release  % of DAC (kWh) P-32 and all others Jul 13 0 0.000 0 0 0.000%

Aug 13 239.801 2.986 1.3279E-11 0 0.000%

Sep 13 443.888 5.526 2.458E-11 0 0.001%

Oct 13 109.787 1.367 6.0793E-12 0 0.000%

Nov 13 91.725 1.142 5.0791E-12 0 0.000%

Dec 13 0 0.000 0 0 0.000%

Jan 14 0.309 0.004 1.711E-14 0 0.000%

Feb 14 88.026 1.096 4.8743E-12 0 0.000%

Mar 14 468.089 5.828 2.592E-11 0 0.001%

Apr 14 320.252 3.987 1.7734E-11 0 0.001%

May 14 0.338 0.004 1.8716E-14 0 0.000%

Jun 14 586.386 7.301 3.247E-11 0 0.001%

Total 2348.601 29.240 1.3005E-10 0 0.004%

3. Solid Waste - Total activity: None No solid waste material was sent to the Radiological Health Department for disposal during the period of 1 July 2013 through 30 June 2014.

H. PERSONNEL RADIATION EXPOSURES UNEP Personnel The University of Utah Radiological Health Department 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 7/1/13-6/30/14 Doses: <1 mrem average; 6 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 twenty-one (621) individuals visited the reactor facility during the period 1 July 2013 to 30 June 2014. None of the visitors received a measurable dose.

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UUTR Annual Report 1 July 2013 ~ 30 Jun 2014 Table 7 Summary of Monitored Personnel Name Monitoring Duty Category Period Adjei, Chris 07/01/13- Regular 6/30/ 14 _________ ___

Alamaniotis, 07/01/13- Regular Miltiadis 6/30/14 Regular Alroumi, Fawaz 10/01/13- Regular 6/30/14 Regular Bahamonde 05/01/14-Castro, 6/30/14 Regular Christina 07/01/13-Bautista, Victor 6/30/14 Regular Bindra, Hitesh 11/01/13- Regular 6/30/14 Regular Boyd, Dallon 07/01/13- Regular 6/30/14 Regular Burnham, 07/01/13- Regular Steven 6/30/14 Regular Burton, Blake 05/01/14- Regular 6/30/14 Regular Chidester, 11/01/13- Regular Joshua 6/30/14 Cutic, Avdo 07/01/13- Regular 6/30/14 Eklund, 05/01/14- Regular Mathew 6/30/14 Fairbanks, 04/01/14- Regular Thomas 6/30/14 Hernandez, 07/01/13- Regular Hermilo 6/30/14 Jasaraj, Elton 07/01/13- Regular 6/30/14 Jevremovic, 07/01/13- Regular Tatjana 6/30/14 Kavouras, John 07/01/13- Regular 6/30/14 Regular Utah Nuclear Engineering Program (UNEP) 8

UUTR Annual Report 1 July 2013 - 30 Jun 2014 11/01/13-Lee, Sangkyu Regular 6/30/14 Levinthal, 07/01/13- Regular Joseph 6/30/14 Lund, Matthew 07/01/13- Regular 6/30/14 McCoy, Kaylyn 07/01/13- Regular 6/30/14 Regular McDonald, 04/01/14- Regular Luther 6/30/14 Regular Minko, Aliaksei 07/01/13- Regular 6/30/14 Regular Moffitt, 07/01/13- Regular Gregory 6/30/14 Regular Morgan, David 07/01/13- Regular 6/30/14 Regular Noble, 07/01/13- Regular Brooklyn 6/30/14 Regular Obadina, Sarah 01/01/14- Regular

____ ____ 6/30/14 _ _ _ _ _ _ _ _ _ _ _

Painter, Daniel 07/01/13- Regular

_____________ 6/30/14 _ __________

Quach, Quang 10/01/13- Regular 6/30/14 Regular Rapich, Jason 07/01/13- Regular 6/30/14 Regular Sandstrom, 11/01/13-. Regular Yumiko 6/30/14 Regular Santora, Joseph 07/01/13- Regular 6/30/14 Regular Schow, Ryan C 07/01/13- Regular 6/30/14 Regular Sisson, Richard 10/01/13- Regular 6/30/14 Regular Varun, Vijay 07/01/13- Regular 6/30/14 Regular Walton, Mary 11/01/13- Regular 6/30/14 Regular Williams, 07/01/13- Regular Tristalee 6/30/14 Regular Utah Nuclear Engineering Program (UNEP) 9

UUTR Annual Report 1 July 2013 - 30 Jun 2014 Winkle, 07/01/13-Regular Samantha 6/30/14 Navarro, Jorge 06/01/13- Regular/Terminated Navarro, __orge 08/30/13 Reeves, Jesse 06/01/13- Regular/Terminated 08/30/13 Regular/Terminated Yang, Haori 06/01/13- Regular/Terminated 11/30/13 Babitz, Philip 06/01/13- Regular/Terminated Babitz, Philip_ 08/30/13 Gibson, 06/01/13- Regular/Terminated Jennifer 02/30/14 Brown, Samuel 06/01/13- Regular/Terminated 08/30/13 Duffield, Tierra 06/01/13- Regular/Terminated 02/30/14 Wilkinson, 06/01/13-Blane 02/30/14 Regular/Terminated Liao, Can 06/01/13- Regular/Terminated 11/30/13 Regular/Terminated Owen, Lyman 06/01/13- Regular/Terminated 02/30/14 Wen, Xianfei 06/01/13- Regular/Terminated 11/30/13 Regular/Terminated Badza, Stefan 06/01/13- Regular/Terminated 08/30/13 Engler, Alan 10/01/13- Regular/Terminated 04/30/14 Regular/Terminated Engler, Jessica 08/01/13- Regular/Terminated 04/30/14 Regular/Terminated Utah Nuclear Engineering Program (UNEP) 10

UUTR Annual Report 1 July 2013 - 30 Jun 2014 Table 8. Summary of whole body exposures to the UNEP personnel Estimated whole body exposure Number of individuals in range (rem) each range Less than 0.1 50 0.10 to 0.25 0 0.25 to 0.50 0 0.50 to 0.75 0 0.75 to 1.00 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 Radiological Health Department 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 Radiological Health Department indicated no unusual dose rates in the areas surrounding the Merrill Engineering Building, which houses the UUTR reactor facility.

Prepared by: Ryan Schow 4, Date: 7/22/2014 Reactor Supervisor Submitted by: Ryan Schow Date: 7/22/2014 Reactor Supervisor Approved by: Date: 7/23/2014 Director Utah Nuclear Engineering Program (UNEP) 11