ML19094A258

Annual Report: January 1, 2018 - December 31, 2018 for the Maryland University Training Reactor, License No. R-70, University of Maryland

ML19094A258
Person / Time
Site:	University of Maryland
Issue date:	03/25/2019
From:	Andrea Johnson Univ of Maryland - College Park
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML19094A258 (8)

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~ ~6A. JAMES.CLARK Amber S. Johnson Director, Radiation Facilities 4418 Stadium Drive College Park, Maiyland 20742

~ I ~ SCHO OL OF ENGI NEER ING 301-405-7756 TEL ajohns37@umd.edu

~i{YL~ ~ radiation.umd.edu March 25, 2019 Document Control Desk US Nuclear Regulatory Commission Washington D.C.- 20555-0001 RE: Annual Report: January 1, 2018 - December 31, 2018 for the Maryland University Training ReactortLi cense No. R-70, University of Maryland.

Enclosed please find the University of Maryland's Annual Report for the period beginning January 1, 2018 and ending December 31, 2018 for the MUTR, License No. R-70.

Sincerely, Amber S. Johnson Director, Nuclear Reactor and Radiation Facilities

Annual Operating Report:

January 1, 2018 - December 31, 2018 MUTR Technical Specification 6.7.1 License No. R-70, Docket No. 50-166 A. James Clark School of Engineering Department of Materials Science and Engineering University of Maryland, College Park, MD 20742

Maryland University Training Reactor Annual Operating Report, 2018 Contents 1 Introduction 2 2 Reactor Usage and Operations 2 3 Surveillance Tests and Inspections 2 3.1 Maintenance Operati<;ms . . . . . . 4 4 Changes to Facility and Ongoing Projects 4 5 Environmental Surveys of Surrounding Areas 4 6 Radioactive Release and Discharge to the Environment 5 6.1 Liquid . . . . . . . . . 5 6.2 Gaseous and Argon-41 . . . . . . . . . . . . . . . . . . . . . 5 7 Summary of Exposure Received by Facility Personnel and Vis-itors 6 8 Unscheduled Shutdown/Reportable Occurrences 6 9 Experiments 6 10 Changes in Facility Staff 6 11 Closing Remarks 6 Page 1

Maryland University Training Reactor Annual Operating Report, 2018 1 Introduction The Maryland University Training Reactor (MUTR) is an open-pool type, TRIGA conversion licensed for operation at 250 kW thermal power. The reac-tor is one of the primary components of the University of Maryland Radiation Facilities, part of the Department of Materials Science and Engineering in the A.

James Clark School of Engineering. The Radiation Facilities also include an elec-tron linac, a Co-60 panoramic irradiator, and a cyclotron. The MUTR is used for operator training, tours for groups internal and external to the university, neutron and gamma irradiations, and neutron activation analysis experiments for undergraduate lab classes and research.

2 Reactor Usage and Operations Between January 1, 2018 to December 31, 2018, the MUTR operated for a total of 77 runs, which are categorized as follows:

Operator Training and Requalification 26 runs Tours, Labs, and Demonstrations 28 runs Calibration, Maintenance, and Surveillance 17 runs Irradiations or Activations 4 runs One of the focuses of the reactor is a training program for undergraduate stu-dents to become reactor operators. The majority of the runs for training are in support of this program. Additionally, the reactor is frequently run for tours, for local schools, university classes, summer camps, and government agencies.

The total energy produced during this period was 5.6MWh with a corresponding burnup of 0.29 grams of U-235.

3 Surveillance Tests and Inspections All required surveillance tests and inspections were preformed at the intervals required by Technical Specification 4.0.

WATER SAMPLE TESTS AIR SAMPLE TESTS RADIATION SURVEYS CONTROL ROD INSPECTION CONTROL ROD DROP TEST RAM CALIBRATION FUEL INSPECTION Page 2

Maryland University Training Reactor Annual Operating Report, 2018 PLUG INTERLOCKS SNM INVENTORIES ALARA REVIEW CONTROL ROD WORTH DETERMINATIONS CONTROL ROD WITHDRAWAL RATES No equipment or material failures were observed during surveillances, and no significant differences with from last year's surveillances were noted.

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Maryland University Training Reactor Annual Operating Report, 2018 3.1 Maintenance Operations In addition to the above surveillance items, the following maintenance opera-tions were performed on the indicated dates:

1/17/18 Replacement of Shim 2 CRDM Rod Down microswitch and motor 1/17/18 Reseated servo module K2 relay 7/17/18 Replaced Make up water solenoid valve 7/17/18 Removed out of service equipment from the water room 9/18/18 Added microswitch and indicator indicator light for thermal column shutter 9/29/18 Replaced CRDM position indicator power supply 9/29/18 Replaced transistor Q5 and R19 on Wide Range Channel Signal Selector Board 11/26/18 Replaced Primary Coolant Flow Rate display in console Additional minor maintenance was performed such as light bulb replacement and fine-tuning of equipment as necessary.

4 Changes to Facility and Ongoing Projects There were no changes to the facility during this time period.

5 Environmental Surveys of Surrounding Areas Environmental surveys include the routine environmental dosimeter measure-ments at the facility perimeter and the remainder of the locations on campus.

Measurements at all points were well within the historical norms.

Environmental Survey Results for the Maryland University Training Reactor January 1, 2018 to December 31, 201 MONITOR LOCATION DOSE (MREM) 2 308 m NE of MUTR 13a 3 1.1 km SW of MUTR 0 4 758 m NW of MUTR 1 5 387 m SE of MUTR 2 6 North, side MUTR fence line 1 7 East, adjacent to MUTR and IRR 2 8 West, adjacent to MUTR 3 9 606 m S of MUTR 4 10 950 m W of MUTR 6 11 South, courtyard adjacent to MUTR 33 12 248 m NW of MUTR 20 14 External to MUTR Lower Entrance South 4 aoose received is attributed to naturally occurring radioactive material (NORM) in the construction bricks of the building.

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Figure 1: Location of dosimeters and MUTR 6 Radioactive Release and Discharge to the En-vironment 6.1 Liquid The Reactor Storage Sump was not discharged during this reporting period.

6.2 Gaseous and Argon-41 The only release from the MUTR to the environment consists of Argon-41 pro-d uced from the activation of natural Argon dissolved in pool water and natural Argon present in air within the interstitial spaces of beams and ports. Argon-41 escapes from the pool and spaces into the MUTR reactor building and then leaks to areas outside the building. The two main areas for assessment of public dose due to efiluent release are outside the roll-up door on the north side of the reactor building and outside the lower reception room into the hallway 1398.

For this reporting period t he reactor was operated for 142.35 hours4.050926e-4 days <br />0.00972 hours <br />5.787037e-5 weeks <br />1.33175e-5 months <br />. EPA CAP88 was utilized to determine the dose in the hallway 1398 from any efiluent release is 2.60x10- 1 mrem.

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Maryland University Training Reactor Annual Operating Report , 2018 7 Summary of Exposure Received by Facility Personnel and Visitors As part of the annual ALARA audit , facility management reviewed exposure records and found all badged personnel received less than 10% of their annual dose limit. The pocket dosimeters recorded minimal exposure for all guests and service personnel.

8 Unscheduled Shutdown/Reportable Occurrences During this reporting period, there was 2 unscheduled shutdowns, one from a reactor Scram, and one from operator error. Neither of these unscheduled shutdowns were the were the result of any equipment failures

• Run# 4699 Unscheduled shutdown due to inadvertent pressing of Shim 2 release button

• Run# 4739 Manual Scram due to building fire alarm There were no reportable occurrences during this reporting period.

9 Experiments During this time the only experiments performed were neutron images and ac-tivations in the Thermal Column.

10 Changes in Facility Staff During this period 1 RO and 1 SRO were removed from the roster.

11 Closing Remarks Page 6