ML11363A176

Annual Report: July 1, 2010 - June 30, 2011 for the Maryland University Training Reactor (Mutr)

ML11363A176
Person / Time
Site:	University of Maryland
Issue date:	12/19/2011
From:	Al-Sheikhly M Univ of Maryland
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC ME1592
Download: ML11363A176 (18)

Text

MApRYIAP*J UIVERSTYOF OFFICE OF THE PRESIDENT 2101 Main Administration Building College Park, Maryland 20742 301.405.4945 TEL 301.314.9395 FAX December 19, 2011 Document Control Desk United States Nuclear Regulatory Commission Washington, D.C. 20555-0001

Reference:

Annual Report: July 1, 2010 - June 30, 2011 for the Maryland University Training Reactor ("MUTR") (TAC NO. ME1592), Docket No.

50-166, License No. R-70 The University of Maryland ("UMD") hereby submits a hard copy of the Annual Report referenced above.

If there are questions about the information submitted, please write to me at the address set forth above or email me at mohamadaumd.edu. Please copy Prof.

Robert Briber on any such correspondence (same address; rbriberaumd.edu).

I declare under penalty of perjury that the foregoing and attached information is true and correct.

Sincerely, Mohamad AI-Sheikhly Professor and Director Maryland University Training Reactor cc: Robert Briber Spyros Traiforos Enclosure

-Atac 094

ANNUAL REPORT: July 1, 2010 - June 30, 2011 FOR THE MARYLAND UNIVERSITY TRAINING REACTOR License No. R-70 Docket No. 50-166 Department of Materials and Nuclear Engineering A. James Clark School of Engineering University of Maryland, College Park College Park, MD 20742-2115

MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT TABLE OF CONTENTS TAB LE O F CO N TEN TS ............................................................................................... I I. IN TR O D U C TION ....................................................................................................... 2 II. REA C TO R U SA G E ......................................................................................................... 3 III. SURVEILLANCE TESTS AND INSPECTIONS ........................................................ 4 IV. CHANGES TO THE FACILITY ................................................................................... 6 V. ENVIRONMENTAL SURVEYS OF SURROUNDING AREAS ................................ 7 VI. RADIOACTIVE RELEASE AND DISCHARGE TO THE ENVIRONMENT ............ 8 VII. ALARA REVIEW FOR FACLITY PERSONNEL AND VISITOR EXPOSURE ..... 9 VIII. UNSCHEDULED REACTOR SHUTDOWN/REPORTABLE OCCURENCES ........ 10 IX . SPEC IA L EX PERIM EN TS ............................................................................................... 11 X. CHANGES IN FACLITY STAFF ................................................................................ 12 A. APPENDIX A. EPA COMPLIANCE ........................................................................... 13 1

MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT I. INTRODUCTION The University of Maryland Training Reactor (MUTR) is an open-pool type, TRIGA fueled reactor licensed for operation at 250 kW thermal power. The core is cooled by natural convection of the pool water with auxiliary cooling provided for protection of the filters and ion exchange equipment associated with reactor support piping.

The MUTR is used for academic instructions and operator training, performance of neutron and gamma irradiations, neutron activation analysis experiments, and tours and demonstrations for groups internal and external to the campus as well as for visiting nuclear power plant trainees.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT REACTOR USEAGE During the past year the MUTR operated for a total of 44 runs (Run Numbers 4055 - 4098),

which are categorized below:

Operator Training/Requalification* 11 runs Tours, Labs & Demonstrations** 21 runs Calibration, Maintenance, and Surveillance 5 runs Irradiations and Activations 21 runs

• Note: Some runs involved training and surveillance and may be counted in both categories.

• • Note: Some of the runs in the Tours, Labs & Demonstrations category consisted of operator training. They are not included in the training category.

To perform these runs the core produced 6.887 MWh (kWh meter change from 285045 kWh to 291932 kWh), with a corresponding burnup of 0.39 Grams of U-235.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT III. SURVEILLANCE TESTS AND INSPECTIONS All required surveillance tests and inspections were performed at the specified intervals. The required surveillance items for this reporting period include:

WATER SAMPLE TESTS AIR SAMPLE TESTS RADIATION SURVEYS CONTROL ROD DROP TEST RAM CALIBRATION SNM INVENTORIES ALARA REVIEW In addition to the above surveillance items, the following maintenance operations were performed on the indicated dates:

8/12/10 Dri-rite baked.

12/17/10 Dri-rite replaced.

3/14/11 Dri-rite baked.

6/11/11 Dri-rite replaced.

Additional minor maintenance was performed such as light bulb replacement and fine-tuning of equipment was performed as necessary.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT IV. CHANGES TO FACILITY There were no significant changes to the Facility during this reporting period.

There was one major system failure during this period. That failure occurred during operation number 4098 on February 17, 2011. The malfunction appeared in the Safety1, wide-range log power, and 1 cps interlock channels. The common item in these channels is the fission chamber.

A complete report of the circumstances is attached as an appendix to this report.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT V. ENVIRONMENTAL SURVEYS OF SURROUNDING AREAS All continuous monitoring for this year was accomplished using fixed-mounted film badges throughout the interior of the reactor building itself. These badges recorded the following exposures:

Monitor Location Dose (mrem) 1 Control Room 151 2 Pool Surface 285 3 Hot Room 433 4 Prep Room 202 5 S. Wall Upper 33 6 S. Wall Lower 49 7 E. Wall Lower 172 8 Pump Room 303 9 N. Wall Lower 1597 10 W. Wall Lower 324 6

MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT VI. RADIOACTIVE RELEASE AND DISCHARGE TO THE ENVIRONMENT The Reactor Storage Sump was not discharged during this reporting period.

The only release from the MUTR consists of Ar-41. From Section 11 of the SER for the MUTR, a 30.0 MWh operation year would result in the generation of 100 mCi of Ar-41 for the entire year from the reactor pool tank. For this operational year, a combined 22.96 mCi of Ar-41 was released to the reactor building. This value was used in the EPA program COMPLY. The MUTR meets the EPA level 2 compliance for airborne release of radioactive materials. A copy of the output for the EPA computer program "COMPLY" is appended with this report.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT VII. ALARA REVIEW FOR FACILITY PERSONNEL AND VISTOR EXPOSURE A review of exposure records and all facility operations were performed by facility management as part of the annual ALARA audit. For this reporting period, all badged personnel and students received doses less than five per-cent of their annual dose limit.

The Pocket Dosimeters recorded minimal exposure for all guests and service personnel.

Calibrations of these self-reading dosimeters were performed on an annual basis by the University of Maryland's Radiation Safety Office.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT VIII. UNSCHEDULED SHUTDOWNS/REPORATBLE OCCURRENCES There were no unscheduled shutdowns during this period.

There were no reportable occurrences during this reporting period.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT IX. SPECIAL EXPERIMENTS There were no special experiments performed during this reporting period.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT X. CHANGES IN FACILITY STAFF There were significant changes to staffing during this reporting period. Three ROs received their licenses bringing the total to two Senior Operators and four Operators.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT APPENDIX A: EPA COMPLIANCE Below is the output from the EPA program COMPLY for the Ar-41 release from the MUTR:

COMPLY: Vl.5d. 09/28/11 10:02 40 CFR Part 61 National Emission Standards for Hazardous Air Pollutants REPORT ON COMPLIANCE WITH THE CLEAN AIR ACT LIMITS FOR RADIONUCLIDE EMISSIONS FROM THE COMPLY CODE, VERSION 1.5d Prepared by:

University of Maryland Maryland University Training Reactor College Park, Maryland Mohamad Al-Sheikhly (301) 405-5214 Prepared for:

U.S. Environmental Protection Agency Office of Radiation Programs Washington, D.C. 20460 12

MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT COMPLY: V1.5d. 09/28/11 10:02 FY 2011 MUTR Argon-41 Release SCREENING LEVEL 1 DATA ENTERED:

Effluent concentration limits used.

DATA ENTERED FOR STACK 1:

CONCENTRATION Nuclide (curies/cu m)

AR-41 1. 48E-05 DATA ENTERED FOR STACK 2:

CONCENTRATION Nuclide (curies/cu m)

AR-41 1. 48E-05 NOTES:

Input parameters outside the "normal" range:

None.

RESULTS:

You are emitting 4350.0 times the allowable amount given in the concentration table.

• • • Failed at level 1.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT COMPLY: V1.5d. 09/28/11 10:02 FY 2011 MUTR Argon-41 Release SCREENING LEVEL 2 DATA ENTERED:

RELEASE RATES FOR STACK 1.

Release Rate, Nuclide (curies/YEAR)

AR-41 1.480E-05 RELEASE RATES FOR STACK 2.

Release Rate Nuclide (curies/YEAR)

AR-41 1.480E-05 SITE DATA FOR STACK 1.

Release height 10 meters.

Building height 10 meters.

The source and receptor are on the same building.

Stack diameter 1.00 meters.

Distance from the source to the receptor is 1 meters.

Building width 15 meters.

Default volumetric flow rate from the stack used (0.3 cu m/sec).

SITE DATA FOR STACK 2.

Release height 10 meters.

Building height 10 meters.

The source and receptor are on the same building.

Stack diameter 1.00 meters.

Distance from the source to the receptor is 1 meters.

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT Building width 15 meters.

COMPLY: Vl.5d. 09/28/11 10:02 Default volumetric flow rate from the stack used (0.3 cu m/sec).

Default mean wind speed used (2.0 m/sec).

NOTES:

Input parameters outside the "normal" range:

Receptor is unusually CLOSE.

RESULTS:

Effective dose equivalent: 1.9E-02 mrem/yr.

• • 1 Comply at level 2.

This facility is in COMPLIANCE.

It may or may not be EXEMPT from reporting to the EPA.

You may contact your regional EPA office for more information.

• • • • • • • • • • END OF COMPLIANCE REPORT **********

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MARYLAND UNIVERSITY TRAINING REACTOR 2010-2011 ANNUAL OPERATING REPORT APPENDIX B: FISSION CHAMBER FAILURE AND RECOVERY 16