ML16028A080

Annual Report: July 1, 2014 - June 30, 2015 for the Maryland University Training Reactor

ML16028A080
Person / Time
Site:	University of Maryland
Issue date:	06/30/2015
From:	Univ of Maryland - College Park
To:	Office of Nuclear Reactor Regulation
References
Download: ML16028A080 (16)

Text

ANNUAL REPORT: July 1, 2014 - June 30, 2015 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

TABLE OF CONTENTS TABLE OF CONTENTS ........................................................................ 1 I. INTRODUCTION ................................................................................. 2 II. REACTOR USAGE .............................................................................. 3 III. SURVEILLANCE TESTS AND INSPECTIONS ............................................. 4 IV. CHANGES TO THE FACILITY........ ........................................................ 5 V. ENVIR~ONMENTAL SURVEYS OF SURROUNDING AREAS........................... 6 VI. RADIOACTIVE RELEASE AND DISCHARGE TQ THE ENVIRONMENT............ 7 VII. ALARA REVIEW FOR FACLITY PERSONNEL AND VISITOR EXPOSURE......... 9 VIII. UNSCHEDULED REACTOR SHUTDOWN/REPORTABLE OCCURENCES..........10 IX. SPECIAL EXPERIMENTS..................................................................... 11 X. CHANGES IN FACLITY STAFF............................................................. 12 A. APPENDIX A. RELEASE DATA............................................................ 13 1

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 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 scientist and researchers.

2

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT II. REACTOR USEAGE During the past year the MUTR operated for a total of 67 runs (Run Numbers 4367 - 4433), which are categorized below:

Operator Training/Requalification* 37 runs Tours, Labs & Demonstrations** 23 runs Calibration, Maintenance, and Surveillance 19 runs lI-radiations and Activations 2 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 8.172 MWh (kWh meter change from 467472 kWh to 475644 kwh), with a corresponding burnup of 0.46 Grams of U-235.

3

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 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 INSPECTION 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:

9/9/14 Dri-rite baked.

11/14/14 Replaced Exhaust Ram 12/9/14 Dri-rite replaced.

3/10/15 Dri-rite baked.

3/23/15 Changed resin in primary water system.

4/20/15 Replaced polyethylene tube on pneumatic transfer system.

6/9/15 Dri-rite replaced.

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

4

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT IV. CHANGES TO FACILITY There were no significant changes to the Facility during this reporting period.

5

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT V. ENVIRONMENTAL SURVEYS OF SURROUNDING AREAS All continuous monitoring for this year was accomplished using fixed-mounted TLD badges throughout the interior of the reactor building itself. These badges recorded the following exPosures:

Monitor Deep Dose Shallow Dose Neutron Location (mrem) 0mem 1 Control Room 0 0 0

2 Reactor Bridge 307 315 0

3 Hot Room 214 216 0

4 West Wall Upper 77 77 0

5 South Wall Upper 22 22 0

6 South Wall Lower 25 25 7 East Wall Lower 216 216 97 8 Water Room 1302 1302 800 9 North Wall Lower 100 100 0 10 West Wall Lower 54 54 0 6

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT VI. RADIOACTIVE RELEASE AND DISCHARGE TO THE ENVIRONMENT The Reactor Storage Sump was not discharged during this reporting period.

The only radioactive material released from the MUTR into the environment consists of Argon-41. This is produced from the activation of the natural argon dissolved in pooi water and from the activation of natural argon present in air, within the interstitial spaces of beams and ports. This Argon-41 subsequently escapes from the pool and to a much smaller extent, the beams and ports, into the MUTR reactor building and then leaks into areas outside of the building. When operating at 250 kW, the MUTR reactor building concentration of Argon-41 at equilibrium is 6.64 x 10-7 Ci m-3 ; this was derived from a detailed measurement study described in the University' s letter to the NRC dated June 18, 2014.

In 2014, with the support of a professional engineer, the MUTR completed an assessment of the air flow and leakage rates from the reactor building to the areas outside. Theassessmentincludeda gap-analysis ofMUTR penetrations, air velocity measurements throughout the MUJTR facility and a fifty-year historical Baltimore-Washington Regional Wind Rose data review.

Building conditions and measurements show air flows from the unrestricted spaces within Building 90, into the MUTR reactor building. The air then flows out of the MUTR reactor building through the rollup door and a personnel door into the outside fenced in courtyard located on the north side of the facility. The combined air flow leakage rate at the rollup door and personnel door was determined to be 0.03702 m3s-1. Thus, the primary path for Argon-41 to unrestricted areas is the leakage of air from the MUTR reactor building through the rollup door and personnel door to the outside. The maximally exposed individual would be the person at the boundary of the courtyard fence line, 4 meters away from the closest edge of the roll up door.

For this reporting period, the MUTR operated for 179 hours0.00207 days <br />0.0497 hours <br />2.959656e-4 weeks <br />6.81095e-5 months <br />. The total Argon-41 activity leaving the rollup door was determined to be 1.6E-02 Ci. This was derived using the reactor building Argon-41 concentration at equilibrium, the combined leakage rate at the rollup door and personnel door, and the total operating hours. The Environmental Protection Agency Clean Air Act Assessment Package - 1988 [EPA CAP88], version 4.0 software was used to calculate the dose to an individual from Argon-41 leaking outside the MUTR building if the individual was continuously positioned at the boundary fence line. The model assumes a ground release and that all the air leakage occurs through one point of 0.06 sq. meters, nearest the individual:

EPA CAP88 calculates the dose from Argon-41, to the maximally exposed individual to be 0.1 mrem. The CAP88 report is presented at the end of this annual report.

7

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT During the 2014 MUTR reactor building evaluation, it was understood that a northerly prevailing wind could have the potential to reverse the air flow direction, resulting in outside f~resh air flow into the MUTR reactor building from the roll up door and an exterior door gaps. This would cause air to then flow from MUTR reactor building into the adjacent unrestricted areas within Building 90. The fifty-year historical assessment found that during 10% of the year, an average wind of 1.6 miles per hour will come from the northerly direction; this included a weighted average of the wind speed blowing from the North-North -West, North and North-North-East. Under these conditions, the Argon-41 leakage will be from the MUTR reactor building to the adjacent unrestricted hallway of Building 90. The dose to an individual from Argon-41 leaking into the hallway was evaluated.

Applying the Argon-41 concentration at equilibrium, 10% of the total operating hours during this reporting period, and the leakage rate of 0.00236 m3s-1 from the MUTR reactor building door into the hallway, the dose to a person from Argon-41 leaking into the unrestricted hallway is calculated to be 0.2 mrem.

8

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 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 ten 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.

9

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT VIII. UNSCHEDULED SHUTDOWNS/REPORATBLE OCCURRENCES There were two unscheduled shutdowns during this reporting period.

The first shutdown happened during operation number 4370 dated August 11, 2014 and was caused by an undercount on the exhaust radiation monitor.

The next unscheduled shutdown occurred on December 3, 2014, the operation number was 4388, and was again caused by an undercount on the exhaust radiation monitor.

Both of these were during periods of training and occurred while the MUTR was subcritical.

There were no reportable occurrences during this reporting period.

10

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT IX. SPECIAL EXPERIMENTS There were no new special experiments performed during this reporting period. There was one experiment classified as special due to the fact that it utilized the thermal column. The experiment used the thermal column as a source of thermal neutrons in order to perform neutron imaging.

11

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT X. CHANGES IN FACILITY STAFF There were no significant changes to staffing during this reporting period. During this reporting period, staff changes consisted of the addition of five new operators which included three new Senior Reactor Operators and two new Reactor Operators. Also this year, two operators' licenses were terminated, these terminations included one RO, and one SRO.

12

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT CAP 88-PC Version 4.0 Clean Air Act Assessment Package - 1988 SYNOPSIS REPORT Non-Radon Individual Assessment Thu Sep 24 10:05:34 2015 Facility: Maryland University Training Reactor MUTR Address: Building 090 Stadium Drive City: College Park State: MD Zip: 20742 Source Category: Source Type: Area Emission Year: 2014 DOSE Age Group: Adult Comments: MEI Ar-41 Dose at MUTR Fence Line Fiscal July 2014 - Jun 2015 Year Committed Effective Dose Equivalent (mrem) 1.16EE-O01 At This Location: 4 Meters West Northwest Dataset Name: MUTR Ar41 2015 M Dataset Date: Sep 23, 2015 09:57 AM Wind File: C:\Program Files (x86)\CAP88\CAP88-PC 4\Default Files\W 13

MARYLAND UNIVERSITY TRAINTNG REACTOR 2014-2015 ANNUAL OPERATING REPORT Thu Sep 24 10:05:34 2015 SYNOPSIS Page 1 MAXIMALLY EXPOSED INDIVIDUAL Location Of The Individual: 4 Meters West Northwest Lifetime Fatal Cancer Risk: 6. 38E-08 ORGAN DOSE EQUIVALENT

SUMMARY

CRN-222 Working Level Calculations Excluded)

Dose Equivalent Organ (mrem)

Adrenal 1.01E-01 UB Wall 1.01E-01 BoneSur 1.71E-01 Brain 1.30E-01 Breasts 1.35E-01 StWall 1.08E-01 SIWall 1.00E-01 ULIWall 1.03E-01 LLIWall 1.02E-01 Kidneys 1.09E-0l Liver l.10E-01 Muscle 1.17E-01 Ovaries 1.04E-0l Pancreas 9.85B-02 RMarrow i 1SE-0l Skin 1 91E-01 Spleen I10EG-0l Testes i 19E-01 Thymus i.14E-01 Thyroid 1.23B-0l GBWall 1.02E-0l HtWall 1.08E-0l Uterus 9.76E-02 ETReg 9.85B-02 Lung_66 1.20B-0l Effectiv 1.16E-0l RADIONUCLIDE EMISSIONS DURING THE YEAR 2014 Source

1. i TOTAL Nuclide Type Size Ci/y Ci/y Ar-41 B 0.000 1.6E-02 1.6E-02 SITE INFORMATION Temperature: 12.800 degrees C Precipitation: 103.630 cm/y Humidity: 8.000 g/cu m Mixing Height: 1800.0 m User specified location of max exposed individual.

(ILOC, JLOC) : WNW, 4 meters 14

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT Thu Sep 24 10:05:34 2015 SYNOPSIS Page 2 SOURCE INFORMATION Source Number: 1 Source Height (in): 0.00 Area (sq m) : 0.06 Plume Rise Pasquill Cat: A B C D E F Fixed (m): None None None None None None None AGRICULTURAL DATA Vegetable Milk Meat Fraction Home Produced: 0.0800 0.0000 0.0100 Fraction From Assessment Area: 0.9200 1.0000 0.9900 Fraction Imported: 0.0000 0.0000 0.0000 Food Arrays were not generated for this run.

Default Values used.

DISTANCES (M) USED FOR MAXIMUM INDIVIDUAL ASSESSMENT 1 2 3 4 5 6 7 8 9 10 i00 200 300 500 15

ANNUAL REPORT: July 1, 2014 - June 30, 2015 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

TABLE OF CONTENTS TABLE OF CONTENTS ........................................................................ 1 I. INTRODUCTION ................................................................................. 2 II. REACTOR USAGE .............................................................................. 3 III. SURVEILLANCE TESTS AND INSPECTIONS ............................................. 4 IV. CHANGES TO THE FACILITY........ ........................................................ 5 V. ENVIR~ONMENTAL SURVEYS OF SURROUNDING AREAS........................... 6 VI. RADIOACTIVE RELEASE AND DISCHARGE TQ THE ENVIRONMENT............ 7 VII. ALARA REVIEW FOR FACLITY PERSONNEL AND VISITOR EXPOSURE......... 9 VIII. UNSCHEDULED REACTOR SHUTDOWN/REPORTABLE OCCURENCES..........10 IX. SPECIAL EXPERIMENTS..................................................................... 11 X. CHANGES IN FACLITY STAFF............................................................. 12 A. APPENDIX A. RELEASE DATA............................................................ 13 1

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 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 scientist and researchers.

2

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT II. REACTOR USEAGE During the past year the MUTR operated for a total of 67 runs (Run Numbers 4367 - 4433), which are categorized below:

Operator Training/Requalification* 37 runs Tours, Labs & Demonstrations** 23 runs Calibration, Maintenance, and Surveillance 19 runs lI-radiations and Activations 2 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 8.172 MWh (kWh meter change from 467472 kWh to 475644 kwh), with a corresponding burnup of 0.46 Grams of U-235.

3

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 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 INSPECTION 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:

9/9/14 Dri-rite baked.

11/14/14 Replaced Exhaust Ram 12/9/14 Dri-rite replaced.

3/10/15 Dri-rite baked.

3/23/15 Changed resin in primary water system.

4/20/15 Replaced polyethylene tube on pneumatic transfer system.

6/9/15 Dri-rite replaced.

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

4

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT IV. CHANGES TO FACILITY There were no significant changes to the Facility during this reporting period.

5

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT V. ENVIRONMENTAL SURVEYS OF SURROUNDING AREAS All continuous monitoring for this year was accomplished using fixed-mounted TLD badges throughout the interior of the reactor building itself. These badges recorded the following exPosures:

Monitor Deep Dose Shallow Dose Neutron Location (mrem) 0mem 1 Control Room 0 0 0

2 Reactor Bridge 307 315 0

3 Hot Room 214 216 0

4 West Wall Upper 77 77 0

5 South Wall Upper 22 22 0

6 South Wall Lower 25 25 7 East Wall Lower 216 216 97 8 Water Room 1302 1302 800 9 North Wall Lower 100 100 0 10 West Wall Lower 54 54 0 6

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT VI. RADIOACTIVE RELEASE AND DISCHARGE TO THE ENVIRONMENT The Reactor Storage Sump was not discharged during this reporting period.

The only radioactive material released from the MUTR into the environment consists of Argon-41. This is produced from the activation of the natural argon dissolved in pooi water and from the activation of natural argon present in air, within the interstitial spaces of beams and ports. This Argon-41 subsequently escapes from the pool and to a much smaller extent, the beams and ports, into the MUTR reactor building and then leaks into areas outside of the building. When operating at 250 kW, the MUTR reactor building concentration of Argon-41 at equilibrium is 6.64 x 10-7 Ci m-3 ; this was derived from a detailed measurement study described in the University' s letter to the NRC dated June 18, 2014.

In 2014, with the support of a professional engineer, the MUTR completed an assessment of the air flow and leakage rates from the reactor building to the areas outside. Theassessmentincludeda gap-analysis ofMUTR penetrations, air velocity measurements throughout the MUJTR facility and a fifty-year historical Baltimore-Washington Regional Wind Rose data review.

Building conditions and measurements show air flows from the unrestricted spaces within Building 90, into the MUTR reactor building. The air then flows out of the MUTR reactor building through the rollup door and a personnel door into the outside fenced in courtyard located on the north side of the facility. The combined air flow leakage rate at the rollup door and personnel door was determined to be 0.03702 m3s-1. Thus, the primary path for Argon-41 to unrestricted areas is the leakage of air from the MUTR reactor building through the rollup door and personnel door to the outside. The maximally exposed individual would be the person at the boundary of the courtyard fence line, 4 meters away from the closest edge of the roll up door.

For this reporting period, the MUTR operated for 179 hours0.00207 days <br />0.0497 hours <br />2.959656e-4 weeks <br />6.81095e-5 months <br />. The total Argon-41 activity leaving the rollup door was determined to be 1.6E-02 Ci. This was derived using the reactor building Argon-41 concentration at equilibrium, the combined leakage rate at the rollup door and personnel door, and the total operating hours. The Environmental Protection Agency Clean Air Act Assessment Package - 1988 [EPA CAP88], version 4.0 software was used to calculate the dose to an individual from Argon-41 leaking outside the MUTR building if the individual was continuously positioned at the boundary fence line. The model assumes a ground release and that all the air leakage occurs through one point of 0.06 sq. meters, nearest the individual:

EPA CAP88 calculates the dose from Argon-41, to the maximally exposed individual to be 0.1 mrem. The CAP88 report is presented at the end of this annual report.

7

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT During the 2014 MUTR reactor building evaluation, it was understood that a northerly prevailing wind could have the potential to reverse the air flow direction, resulting in outside f~resh air flow into the MUTR reactor building from the roll up door and an exterior door gaps. This would cause air to then flow from MUTR reactor building into the adjacent unrestricted areas within Building 90. The fifty-year historical assessment found that during 10% of the year, an average wind of 1.6 miles per hour will come from the northerly direction; this included a weighted average of the wind speed blowing from the North-North -West, North and North-North-East. Under these conditions, the Argon-41 leakage will be from the MUTR reactor building to the adjacent unrestricted hallway of Building 90. The dose to an individual from Argon-41 leaking into the hallway was evaluated.

Applying the Argon-41 concentration at equilibrium, 10% of the total operating hours during this reporting period, and the leakage rate of 0.00236 m3s-1 from the MUTR reactor building door into the hallway, the dose to a person from Argon-41 leaking into the unrestricted hallway is calculated to be 0.2 mrem.

8

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 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 ten 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.

9

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT VIII. UNSCHEDULED SHUTDOWNS/REPORATBLE OCCURRENCES There were two unscheduled shutdowns during this reporting period.

The first shutdown happened during operation number 4370 dated August 11, 2014 and was caused by an undercount on the exhaust radiation monitor.

The next unscheduled shutdown occurred on December 3, 2014, the operation number was 4388, and was again caused by an undercount on the exhaust radiation monitor.

Both of these were during periods of training and occurred while the MUTR was subcritical.

There were no reportable occurrences during this reporting period.

10

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT IX. SPECIAL EXPERIMENTS There were no new special experiments performed during this reporting period. There was one experiment classified as special due to the fact that it utilized the thermal column. The experiment used the thermal column as a source of thermal neutrons in order to perform neutron imaging.

11

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT X. CHANGES IN FACILITY STAFF There were no significant changes to staffing during this reporting period. During this reporting period, staff changes consisted of the addition of five new operators which included three new Senior Reactor Operators and two new Reactor Operators. Also this year, two operators' licenses were terminated, these terminations included one RO, and one SRO.

12

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT CAP 88-PC Version 4.0 Clean Air Act Assessment Package - 1988 SYNOPSIS REPORT Non-Radon Individual Assessment Thu Sep 24 10:05:34 2015 Facility: Maryland University Training Reactor MUTR Address: Building 090 Stadium Drive City: College Park State: MD Zip: 20742 Source Category: Source Type: Area Emission Year: 2014 DOSE Age Group: Adult Comments: MEI Ar-41 Dose at MUTR Fence Line Fiscal July 2014 - Jun 2015 Year Committed Effective Dose Equivalent (mrem) 1.16EE-O01 At This Location: 4 Meters West Northwest Dataset Name: MUTR Ar41 2015 M Dataset Date: Sep 23, 2015 09:57 AM Wind File: C:\Program Files (x86)\CAP88\CAP88-PC 4\Default Files\W 13

MARYLAND UNIVERSITY TRAINTNG REACTOR 2014-2015 ANNUAL OPERATING REPORT Thu Sep 24 10:05:34 2015 SYNOPSIS Page 1 MAXIMALLY EXPOSED INDIVIDUAL Location Of The Individual: 4 Meters West Northwest Lifetime Fatal Cancer Risk: 6. 38E-08 ORGAN DOSE EQUIVALENT

SUMMARY

CRN-222 Working Level Calculations Excluded)

Dose Equivalent Organ (mrem)

Adrenal 1.01E-01 UB Wall 1.01E-01 BoneSur 1.71E-01 Brain 1.30E-01 Breasts 1.35E-01 StWall 1.08E-01 SIWall 1.00E-01 ULIWall 1.03E-01 LLIWall 1.02E-01 Kidneys 1.09E-0l Liver l.10E-01 Muscle 1.17E-01 Ovaries 1.04E-0l Pancreas 9.85B-02 RMarrow i 1SE-0l Skin 1 91E-01 Spleen I10EG-0l Testes i 19E-01 Thymus i.14E-01 Thyroid 1.23B-0l GBWall 1.02E-0l HtWall 1.08E-0l Uterus 9.76E-02 ETReg 9.85B-02 Lung_66 1.20B-0l Effectiv 1.16E-0l RADIONUCLIDE EMISSIONS DURING THE YEAR 2014 Source

1. i TOTAL Nuclide Type Size Ci/y Ci/y Ar-41 B 0.000 1.6E-02 1.6E-02 SITE INFORMATION Temperature: 12.800 degrees C Precipitation: 103.630 cm/y Humidity: 8.000 g/cu m Mixing Height: 1800.0 m User specified location of max exposed individual.

(ILOC, JLOC) : WNW, 4 meters 14

MARYLAND UNIVERSITY TRAINING REACTOR 2014-2015 ANNUAL OPERATING REPORT Thu Sep 24 10:05:34 2015 SYNOPSIS Page 2 SOURCE INFORMATION Source Number: 1 Source Height (in): 0.00 Area (sq m) : 0.06 Plume Rise Pasquill Cat: A B C D E F Fixed (m): None None None None None None None AGRICULTURAL DATA Vegetable Milk Meat Fraction Home Produced: 0.0800 0.0000 0.0100 Fraction From Assessment Area: 0.9200 1.0000 0.9900 Fraction Imported: 0.0000 0.0000 0.0000 Food Arrays were not generated for this run.

Default Values used.

DISTANCES (M) USED FOR MAXIMUM INDIVIDUAL ASSESSMENT 1 2 3 4 5 6 7 8 9 10 i00 200 300 500 15