ML20023D200

Environ Rept

ML20023D200
Person / Time
Site:	University of Utah
Issue date:	03/07/1983
From:	UTAH, UNIV. OF, SALT LAKE CITY, UT
To:
Shared Package
ML19301C314	List: ML20023D185 ML20023D193 ML20023D200 ML20023D210
References
ENVR-830307, NUDOCS 8305190369
Download: ML20023D200 (4)

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Environmental Report for the University of Utah TRIGA Reactor Submitted by Nuclear Engineering Laboratory University of Utah Salt Lake City, Utah 84112 i

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7 March 1983 i

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I 8305190369 830512 PDR ADOCK 05000407 PDR p

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s Environmental Report University of Utah TRIGA Reactor

1. Introduction This Environmental Report is part of the Univers.ity of Utah's applica-tion to the NRC for relicensing of the TRIGA Nuclear Reactor, R-126, at the University of Utah. The basic source documents for this report are the annual reports submitted to the NRC which include together with reactors

! operational experience, a summary of the nature and amounts of radioactive i effluents released or discharged to the environment.

2. Background -

The University of Utah TRIGA nuclear reactor has been licensed and operational since 30 Setpember 1975. During that operational period the environmental impact arising from the facility is deemed to be insigificant.

The TRIGA's present maximum power level of 100 kilowatts and accumulated operating time have produced a total energy, output of 19.4 megawatt hours.

This represents an average power at operation of 34 kilowatts and it has been possible to operate at this average energy release without the need for a cooling tower relying on natural convective and conductive heat transfer processes between the fuel, coolant water, tank, and ground surrounding the tank.

3. Radioactive Releases and Discharges i The principal air borne radionuclide potentially produced is argon-41.

1 All monitoring activities during operation indicated no measurable Ar-41 activity released from the facility and conservative calculations for the potential production of Ar-41 during the license period indicate an average annual dose offsite from the facility of a fraction of a millirem. Campus-l e

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l wide background radiation monitoring at.tivities during the past licensing l period have always indicated expected ambient levels and a recently

. installed EPA radiation monitoring station located outside the Reactor i '

Facility have snown only ambient levels. Figure 1,provides a sumary of the campus-wide radiation measurements . conducted during the tenure of the

, TRIGA license.

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SUPMARY OF ANNUAL ENVIRONMENTAL RADIATION SURVEYS FOR THE UNIVERSITY OF UTAH NUCLEAR REACTOR FACILITY a

1976* 1977' 1978 1979 . 1980 1931 1982 Station Location (mR/hr) (mR/hr) (eR/hr) (mR/hr) (mR/hr) (mR/hr) (eR/hr) 1 Grass centre of lawn OSH rose garden 0.041 0.039 0.024 0.017 0.0C9 0.012 l

l 2 Rain gutter in front of OSH main door N.E.

side 0.040 0.043 0.021 0.013 0.009 0.014 3 Grass 5.W. corner of Wasatch 81vd. and Federal Way 0.050 0.046 0.021 0.016 0.014 0.013 1

4 Storm drain.N.E. cerner

( of Connor Road and Medical Centre 0.053 0.039 0.021 0.020 0.008 0.011 5 Grass-top of mound, S.E. corner bf Connor Road and Medical Centre 0.038 0.039 0.022 0.020 0.007 0.011 6 Store drain.S.W. edge of Merrill Eng, parting

. lot 0.038 0.034, 0.022 0.01.4 0.011 0.010 7 Grass.15 ft Neath of storm drain (St #6) 0.046 0.039 C.021 0.014 0.013 0.012 8 Storm drain.5.W. corner of football stadium parking lot 0.039 0.036 0.018 0.016 0.009 0.015 9 Grass.50 ft 5.W. of St. #8 0.037 0.039 0.020 0.012 0.008 0.011 10 Eterm drain-M.E. corner of parking lot between Institute and State Centre 0.037 0.035 0.025 0.013 0.009 0.010 13 Grass-30 ft North of '

5t. #10 0.036 0.038 0.024 0.017 0.010 0.019 12 Orain-West of

' greenhouse 0.033 0.043 0.022 0.020 0.010 0.019 13 Grass.30 ft West of greenhouse 0.028 0.036 0.071 0.019 0.003 0.015 14 Lawn. North end of M.E.8. 0.015 0.025 0.020 0.005 0.012 AVERAGES 0.040' O.039* 0.015 0.022 0.017 0.009 0.013

• These seasurements were perfornea with Eber1tne (E.120 Geiger) gamma. beta survey meters.

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