ML19331D610

Revised App III to Sixteenth Progress Rept of Tx A&M Univ Nuclear Science Ctr, 1979 Consisting of Summaries of Health Physics Support,Effuent Releases,Environ Survey Program,Radiation & Contamination Control Program

ML19331D610
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Issue date:	08/28/1980
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= Appendix III Summaries of Health Physics Support

'I Effluent Releases Environmental Survey Program Radiation and Cont &mination Control Program and j Personnel Exposures

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f I III-l Summary of Health Physics Support for the Operation of the Nuclear Science Center Reactor 1979 I Provided health physics monitoring support for processing 920 irradiations containing over 11,000 samples and 1050 curies of radioactivity.

Certified 603 shipments of radioactive materials to off-site industry.

Certified 254 shipments of radioactive materials to other campus laboratories.

Provided monitoring support for processing and handling over 5500 experimental samples retained at the Nuclear Science Center laboratories.

Conducted environmental survey program in cooperation with the Texas State Department of Health. This program consists of in-situ TLD monitors and tha collection, analyses and I evaluation of over 100 soil, water, vegetation, and milk samples.

I Provided personnel monitoring support for 40-50 persons on a daily basis and over 4,000 visitors as required.

Performed radionuclide analyses and packaged approximately 300 Ft 3 of dry solid radioactive waste for disposal.

Performed radioisotope identification and determined radio-activity concentrations for 44 releases of radioactive liquid effluents totaling 910,000 gallons including fresh water diluent. Volume of fresh water diluent was 690,000 I gallons required to maintain effluent releases to approxi-mately 1% of MPC values specified in 10CFR20.

Performed surveys of the Nuclear Science Center facilities for radiation levels and radioactive contamination including the collection, analyses, and evaluation of approximately 250 smear samples on a weekly basis.

Conducted radiation safety training for 50 HSC empio/ees and experimental personnel using NSC facilities.

Conducted radiation safety training for off-site support agencies required for the implementation of emergency planning and preparedness procedures. These personnel in-cluded 15 members of St. Joseph's Hospital, 38 members of College Station Fire Department and ambulance services, and 40 members of the University Police Department.

• III-2 EFFLUENT RELEASE

SUMMARY

Introduction Summaries of radioactive effluents released from the Nuclear Science Center for 1979 are included in this Appendix. These data are presented in tabular form and include atmospheric, liquid and solid waste releases.

Particulate Releases Radioactive particulates are monitored at the base of the central exhaust stack and summarized on a monthly basis. The annual average release rate was 1 39 E-ll pC1/cc. Total radio-activity released for the year was 1.03 E-03 curies. There were no radioisotopes with > 8 day half-lives identified from isotopic analyses of the filter papers. These analyses revealed only the decay daughters of Radon-Thoron. These data are presented in Table I.

Gaseous Releases Argon-41 is the major gaseous effluent produced and released at the Nuclear Science Center. This effluent is measured by counting the Argon-41 photopeak in the gaseous discharges of the central exhaust stack. Total Argon-41 released during 1979 was 2.44C1. This results ira an annual average release rate of 3 23 E-08 pC1/cc as measured in the central exhaust stack with no dilution factors applied. Applying the dilution factor of 5 0 E-03 allowed at the site boundary (as determined, SAR, pages 117-119, June 1979) results in radioactivity concentrations of < 1% of the limits specified in 10CFR20, Appendix B, Table II, Column 1. These data are summarized on a monthly basis and presented in Table II.

Liquid Waste Releases ,

Radioactive liquid effluents are collected in liquid waste holdup tanks prior to release from the confines of the Nuclear Science Center. Sample analyses for radioisotope identification and radioactivity concentrations were determined for each release.

I There were 44 liquid waste releases totaling 9 10 E 05 gallons including diluents from the Nuclear Science Center during 1979 The total radioactivity released for 1979 was 2.35 E-02 Ci with an average concentration of 6.83 E-06 pCi/ml. Radioisotopes were identified as Ir-192, Co-60, Mn-54, Co-58, Na-24, Zn-65, Cr-51, Cd-ll5, Ce-141, Br-82, Cd-109, Co-57, Cs-137, I-133, and Sb-122.

Radioactivity concentrations for each radioisotope was below the limits specified in 10CFR20. Summaries of these data are presented in Tables 3-13

III-3 Solid Radioactive Waste There was a total of 29.41 Ft 3 of dry solid waste materials packaged in four 55 gallon steel drums for disposal during 1979

'Phese materials were transferred to the Radiological Safety l Office, Texas License 6-448, for disposal. This material consisted of Eu-152 contaminated soil and 5 each 14 inch sections of 3 inch carbon steel pipe doped with Co-60. These materials contained 2.43 E-01 Ci of Co-60 and 1.02 E-03 Ci pf Eu-152. These data are I summarized in Table 14. Also, an additional volume of approximately 250 Ft 3 of dry solid waste materials was assayed for radioactivity concentration and radioisotope identification. These materials were packaged in 55 gallon steel drums and stored for future disposal.

III-4 i

j TABLE 1

) PARTICULATE EFFLUENT RELEASES I ANNUAL

SUMMARY

1 1979 l Exhaust Volume Concentration Total Radioactivity j Month cc pC1/cc uCi Ci l

j January 6.31 E 12 4.42 E-11 278.90 2 79 E-04 1

i February 5 71 E 12 2.64 E-11 150 74 1.51 E-04 1

March 6.31 E 12 1.63 E-11 102.85 1.03 E-04 April 6.12 E 12 1.02 E-11 62.42 6.24 E-05 j May 6.31 E 12 9 07 E-12 57 23 5 72 E-05 i

June 6.12 E 12 6.53 E-12 39 96 3.40 E-05 July 6.31 E 12 1 92 E-11 121.15 1.21 E-04 1

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August 6.31 E 12 4.67 E-12 29.46 2 95 E-05 I

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September 6.12 E 12 6.53 E-12 39 96 4.00 E-05 t

October 6.31 E 12 1.10 E-11 69.41 6.94 E-05 November 6.12 E 12 8.71 E-12 53 30 5 33 E-05 D ecember 6.31 E 12 4 72 E-12 29.78 2 98 E-05 II 1

Total Volume: 7 44 E 13 cc l

1 Annual Average Release: 1 39 E-11 uci/cc l

1 Total Radioactivity Released: 1.03 E-03 C1 1

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III-5 TABLE 2 GASECUS EFFLUE?Tr RELEASES ABGCN-41 ANNUAL SG NARY 1979 Exhaust Volume Concentration

• Concentration ** Percent ** Padioactivity*

Ibnth cc pC1/cc pCi/cc MFC Total (C1)

January 6.31 E 12 2 35 E-08 1.17 E-10 03 1.48 E-01 February 5 71 E 12 3 35 E-08 1.67 E-10 0.4 1 91 E-01 j March 6.31 E 12 3 35 E-08 1.67 E-10 0.4 2.11 E-01 April 6.12 E 12 3 10 E-08 1.55 E-10 0.4 1.89 E-01 l May 6.31 E 12 2 35 E-08 1.17 E-10 03 1.48 E-01 June 6.12 E 12 2.60 E-08 1 30 E-10 03 1.59 E-01 l July 6.31 E 12 1 37 E-08 6.85 E-11 0.2 8.69 E-02 August 6.31 E 12 2 36 E-08 1.18 E-10 03 1.48 E-01 l

i Septe:2er 6.12 E 12 2.85 E-08 1.42 E-10 0.4 1.74 E-01 j October 6.31 E 12 2.60 E-08 1 30 E-10 03 1.64 E-01 i

j. Nove:rrer 6.12 E 12 4.45 E-08 2.25 E-10 0.6 2.72 E-01 December 6.31 E 12 8.19 E-08 4.09 E-10 1.0 5 16 E-01

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Total Volume: 7.44 E 13 cc

! Annual Average Eelease*: 3 23 E-08 uCi/cc

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'Ibtal Padioactivity Beleased*: 2.41 Ci

• As Measured in the Central Exhaust Stack j

C*As Detemined at 100 meters, approximate boundary of exclusion area, with 200/1 Dilution Factor; SAR, Pages 117-119, June 1979 4

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TABLE 3 RADI0 ACTIVE LIQUID rrrLLE7f FELEASES SLTOIARY 1979 Nu:r.ber Volume

• Concentration

• MPC-W MPC Radioactivity Isotope Releases Gallons pC1/cc pC1/cc  % Ci Ir-192 39 7 96 E 05 4.45 E-06 4.0 E-05 11.1 1.34 E-02 Co-60 42 8.77 E 05 1.12 E-06 3 0 E-05 37 3 72 E-03 Mn-54 38 8.08 E 05 7.45 E-07 1.0 E-04 07 2.28 E-03 Co-58 35 7 76 E 05 3 35 E-07 9 0 E-05 0.4 9.85 E-04 Na-24 10 190 E-05 1.23 E-06 3 0 E-05 4.1 8.86 E-04 1

Zn-65 21 7 15 E 05 2 99 E-07 1.0 E-04 03 8.11 E-04 Cr-51 3 6.20 E 04 2.17 E-06 2.0 E-03 0.1 5 10 E-04 Cd-115 1 2.85 E 04 4.02 E-06 3 0 E-05 13 4 4.34 E-04 Ce-141 11 2.64 E 05 3 47 E-07 9.0 c-05 0.4 3 48 E-04 er-82 4 7.80 E 04 3 21 E-07 4.0 E-05 0.8 9.49 E-05 Cd-109 1 1 70 E 04 5 53 E-07 2.0 E-04 03 3 56 E-05 Co-57 5 1 55 E 05 6.00 E-08 4.0 E-04 <.1 3 52 E-05 Cs-137 2 34 E 04 5.04 E-08 2.0 E-05 03 6.50 E-06 I-133 1 1 70 E 04 4.18 E-08 1.0 E-06 4.2 2.69 E-06 Sb-122 1 17 E 04 2.50 E-08 3 0 E-05 <.1 1.61 E-06 Total Releases: 44 oTotal Volume: Gallons: 9.10 E 05 CC: 3 45 E 09 0 Average Concentration: 6.83 E-06 uCi/cc Total Radioactiv4ty: 2 35 E-02 Ci 0 Includes fresh water diluent l

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l TABE 4 RADI0ACTI'/E LIQUID EFFLUENT Frt ASES l BDYELY SlLMARY

{ January 1979 i

l Number of Volume

• Concentration

• MPC-W MFC Radioactivity j Isotope Releases Gallons pCi/cc pCi/cc  % C1 1

j Co-60 2 3 40 E 04 1.25 E-06 5 0 E-05 2.5 1.61 E-04 I

!' Zn-65 2 3 40 E 04 1.02 E-06 1.0 E-04 1.0 1 32 E-04 I Mn-54 1 1 70 E 04 1.14 E-06 1.0 E-04 1.1 7 35 E-05 i

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Cr-51 1 1 70 E 04 7.83 E-07 2.0 E-03 <1 5.05 E-05 l

i Co-58 1 1 70 E 04 6.63 E-07 9 0 E-05 0.7 4.27 E-05

., Ce-141 1 1 70 E 04 2.25 E-07 9 0 E-05 0.2 1.45 E-05 i

i Total Release: 2

Total Volume: Gallons 3.40 E 04 cc 1.29 E 08 i

Average Concentration: 3.68 E-06 uCi/cc Total Radioactivity: 4 75 E-04 Ci t

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t TABE 5 RADICACfIVE LIQUID EFFIL'E'Tf REE/ES FCEHLY SGI4ARY Farch 1979 I Ilu: ricer of Volume

• Concentration

• MPC-W MFC Fadicactivity Isotope Releases Gallons uC1/cc uCi/cc  % C1 Co-60 2 3 40 E 04 9 07 E-07 5.0 E-05 1.8 1.17 E-04 Zn-65 2 3.40 E 04 5 33 E-07 1.0 E-04 05 6.88 E-05 C0-58 2 3 40 E 04 1 53 E-07 1.0 E-04 0.2 1 98 E-05 Ir-192 2 3.40 E 04 6.23 E-08 4.0 E-05 0.2 8.04 E-06 Sb-122 1 1 70 E 04 2.50 E-08 3.0 E-05 <0.1 1.61 E-06 ,

Total Release: 2 Total Volume: Gallens 3 40 E 04 cc 1.29 E 08 Average Concentration: 1.67 E-06 uC1/cc Total Radioactivity: 2.15 E-04 Ci

• Includes thsh water diluent I

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TABLE 6 RADICACTIVE LIQUID EFFLLE7I' RELEASES DOITI'HLY SUCIARY April 1979 Number of Volu:ne* Concentration

• MPC-W MPC Radioactivity pC1/cc "

Isotope Paleases Gallons uC1/cc . C1 Co-60 3 5 10 E 04 1 94 E-06 3 0 E-05 6.5 3 76 E-04 Zn-65 3 5 10 E 04 1.08 E-06 1.0 E-04 1.1 2.10 E-04 l Mn-54 2 34 E 04 1 96 E-06 1.0 E-04 2.0 1.26 E-04 Co-58 3 5 10 E 04 2 76 E-07 9 0 E-05 03 5 34 E-05 Cd-109 1 1 70 E 04 5 52 E-07 2.0 E-04 0.3 3 56 E-05 Ce-141 2 34 E 04 4.13 E-07 9 0 E-05 0.5 2.66 E-05 Ir-192 2 3.4 E 04 3 98 E-07 4.0 E-05 1.- 2.56 E-05 Co-57 1 170 E 04 4.48 E-08 4.0 E-04 <0.1 2.89 E-06 I-133 1 1 70 E 04 4.17 E-08 1.0 E-06 4.2 2.69 E-06 Total Feleases: 3 Total Volume: Gallons 5 10 E 04 cc 1 93 E 08 Average Concentration: 4.44 E-06 pC1/cc Total Radioactivity: 8.58 E-08 Ci

• Includes fresh water diluent 1

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TABLE 7 RADIOACTIVE LIQUID EFFILETf FElEASE.S MONIHLY SIINARY Vay 1979 i Nu:nber of Voltm

• Concentration

• I Isotope Releases Gallons pC1/cc MPC-W pCi/cc STC Radioactivity Ci Na-24 2 3 25 E 04 2.46 E-06 3 0 E-05 8.2 3 03 E-04 Co-60 3 4.95 E 04 7 29 E-07 3 0 E-05 2.4 1 37 E-04 Br-82 3 4.95 E 04 4.U3 E-07 4.0 E-05 1.2 9 08 E-05 Ir-192 3 4.95 E 04 2 33 E-07 4.0 E-05 0.6 4.39 E-05 Mn-54 2 3 25 E 04 2.20 E-07 1.0 E-04 0.2 2 71 E-05 Zn-65 2 3 25 E 04 2.06 E-07 1.0 E-04 0.2 2 54 E-05 l

Co-58 2 3 25 E 04 6.20 E-08 9 0 E-05 <0.1 7.63 E-06 '

Ce-141 1 1 55 E 04 2.40 E-OS 9 0 E-05 <0.1 1.41 E-06 l

Total Releases: 3 i Total Volu:ne: Gallons 4 95 E 04 cc 1.88 E 08 Average Concentration: 3 38 E-06 pC1/cc Total Radioactivity: 6.36 E-04 Ci

" Includes fresn water diluent I

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i TABIE 8 RADI0 ACTIVE LIQUID EMLLETI' r7 TEASES MCNIHLY SUGARY June 1979 Nu:ter of Volume

• Concentration MPC-W MPC Eadioactivity .

Isotope Releases Gallons pC1/cc pC1/cc  % Ci '

Co-60 5 1.20 E 05 1.62 E-06 3 0 E-05 5.4 7.42 E-04 Mn-54 5 1.20 E 05 8.69 E-07 1.0 E-04 09 3 96 E-04 Zn-65 4 9 15 E 04 8.31 E-07 1.0 E-04 0.8 2.88 E-04 Co-58 5 1.20 E 05 2.14 E-07 9 0 E-05 0.2 9.78 E-05 Ir-192 5 1.20 E 05 1 95 E-07 4.0 E-05 05 8.91 E-05 ce-141 2 4.57 E 04 5.18 E-08 9.0 E-05 <0.1 8.99 E-06 Br-82 1 2.85 E 04 3.87 E-08 4.0 E-05 <0.1 4.19 E-06 Total Releases: 5 Total Volume: Gallons 1.20 E 05 cc 4.56 E 08 Average Concentration: 3 56 E-06 pCi/cc Total Radioactivity: 1.63 E-03 C1 CIncludes fresh water diluent

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'I g TEE 9 RADICACfIVE LIQUID EFFLUETT REEASES FiOf7HILY SUFMARY July 1979  ;

Number of Volume

• Concentration

• MPC-W MPC Radioactivity I pC1/cc "

, Isotope Releases Gallons pCi/cc . C1 Cd-ll5 c 2.85 E 04 4.02 E-06 4.0 E-05 10.0 4.34 E-04 C&51 2 2.85 E 04 3 76 E-06 2.0 E-03 0.2 4.07 E-04 Co-60 4 7.87 E 04 1.05 E-06 3 0 E-05 35 3 14 E-04 Fn-54 4 7.87 E 04 9 93 E-07 1.0 E-04 1.0 2.96 E-04 Na-24 2 2.85 E 04 2.66 E-06 3 0 E-05 8.9 2.87 E-04 Zn-65 3 6.23 E 04 8.48 E-07 1.0 E-04 0.8 2.00 E-04 Co-58 3 6.23 E 04 4.39 E-07 9 0 E-05 0.5 1.04 E-04 Ir-192 4 7.87 E 04 3 41 E-07 4.0 E-05 09 1.02 E-04 Co-57 1 1 70 E 04 4.48 E-08 4.0 E-04 0.1 2.89 E-06 Total Releases: 4 I Total Volume: blions 7.87 E 04 cc 2 98 E 08 Average Concentration: 7 72 E-06 pCi/cc

'Ibtal Radioactivity: 2.15 E-03 Ci

• Includes fresh water diluent l

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'I TABLE 10 RADI0 ACTIVE LIQUID EFFILENT Fer ASES ,

FLVIHLY SUM 4ARY Auglst 1979 I

Number of Volume

• Concentration

• MPC-W MPC Fadioactivity Isotope Releases Gallons pC1/cc pC1/cc  % C1 Co-60 5 1.13 E 05 9.80 2-07 3 0 E-05 33 4.18 E-04 Mn-54 6 1.29 E 05 6.63 E-07 1.0 E-04 0.7 3 24 E-04 Na-24 2 6.23 E 04 6.12 E-07 3 0 E-05 2.0 1.44 E-04 Zn-65 4 9 58 E 04 3.84 E-07 1.0 E-04 0.4 1 39 E-04 Co-5d 6 1.29 E 05 2.19 E-07 9 0 E-05 0.2 1.08 E-04 Cr-51 1 1.65 E 04 8.47 E-07 2.0 E-03 0.4 5 30 E-05 Ir-192 4 6.55 E 04 1 78 E-07 4.0 E-05 0.4 4.42 E-05 Co-57 1 1.53 E 04 2 70 E-08 4.0 E-04 <0.1 1 56 E-06 I

'Ibtal Releases: 6 Total Volume: Gallons 1.29 E 05 cc 4.89 E 08 Average Concentration: 2 52 E-06 pC1/cc Total Radioactivity: 1.23 E-03 Ci CIncludes fresh water diluent I

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!I TABLE 11 RADIOACf1VE LIQUID EFFLUE!C FE. LEASES M0lmILY SUO!ARY September 1979 Number of Volum" Concentration

• I@C-W MPC Radioactivity Isotope Releases Gallons uC1/cc pC1/cc "

. Ci 1r-192 8 1 58 E 05 2.03 E-06 4.0 E-05 5.1 1.21 E-03 Co-60 7 1.41 E 05 9.69 E-07 3 0 E-05 32 5 16 E-04 Mn-54 7 1.41 E 05 6.37 E-07 1.0 E-04 0.6 3 39 E-04 Zn-65 6 1.24 E 05 4.76 E-07 1.0 E-04 0.5 2.25 E-04 Co-58 6 1.24 E 05 3 44 E-07 9 0 E-05 0.4 1.62 E-04 )

Na-24 4 6.65 E 04 6.01 E-07 3 0 E-05 2.0 1.51 E-04 Ce-141 2 2.85 E 04 1 59 E-07 9 0 E-05 0.2 1 72 E-05 Co-57 2 2 90 E 04 1.82 E-08 4.0 E-04 <0.1 2.0 E-06 Total Releases: 8 I Total Volume: Gallons 1 58 E 05 cc 5.97 E 08 Average Concentration: 4.40 E-06 pC1/cc Total Radioactivity: 2.63 E-03 Ci 0 Includes fresh water diluent i

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I i TABLE 12 RADI0 ACTIVE LIQUID EFFLUD7f FEIEASES SGTMLY SULHARY October 1979 I Isotope Number of Releases Volume

• Gallons Concentration

• uCi/cc MPC-W uCi/cc MPC Radioactivity Ci Ir-192 7 1.89 E 05 1 58 E-05 4.0 E-05 39.5 1.13 E-02 l Co-60 7 1.89 E 05 1.16 E-06 3 0 E-05 3.8 8.33 E-04 ,

1 Mn-54 7 1.89 E 05 9 35 E-07 1.0 E-05 93 6.69 E-04 Co-58 5 1 56 E 05 5 94 E-07 9 0 E-05 0.6 3 49 E-04 Ce-141 4 1.22 E 05 6 02 E-07 9 0 E-05 1.5 2 79 E ,14 Cn-65 4 1.40 E 05 4.71 E-07 1.0 E-05 4.7 2 51 E-04 Co-57 1 7 70 E 04 8.87 E-08 4.0 E-05 0.2 2 59 E-03 Cs-137 2 3 40 E 04 5 04 E-08 4.0 E-05 0.1 6.50 E-06 Total Releases: 7 Total Volume: Gallons 1.89 E 04 cc 7 16 E 08 Average Concentration: 1.92 E-05 uCi/cc Total Radioactivity: 1.38 E-02 Ci l

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III-16 TELE 13 BADICACTIVE LIQUID EFFIDENT RELEASES BENTHLY S'&I4ARY Noverrber 1979 Ntrber of Volume

• Ccncentration* MPC-W >'PC Fadioactivity Isotope Releases Gallons pCi/cc pC1/cc  % C1 Ir-192 4 6.70 E 04 2.12 E-06 4.0 E-05 5.3 5 38 E-04 Co-60 4 6.70 E 04 4.20 E-07 3 0 E-05 1.4 1.07 E-04 Zn-65 3 5 00 E 04 2.23 E-07 1.0 E-05 2.2 4.24 E-05 Mn-54 4 6.70 E 04 1.14 E-07 1.0 E-05 1.1 2 90 E-05 Co-58 3 5 00 E 04 7.82 E-08 9 0 E-05 <.1 1.49 E-05 Total Paleases: 4 Total Volume: Gallons 6.70 E 04 cc 2.54 E 08 Average Concentration: 2.88 E-06 pCi/cc

'Ibtal Radioactivity: 7 32 E-04 C1

• Includes fresh water diluent I

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III-17 ill l TABIE 14 SOLID RADIOACTIVE WASTE DISPOSAL i

i ANNUAL SUFi4ARY

! 1979 l

Radioisotope Radioactivity l (C1) 4 '

I Co-60 2.43 E-01 Eu-152 1.02 E-03 1 -

'Ibtal Volume: 29.41 Ft3 contained in four 55 gallon steel drums l Total Radicactivity: 2.44 E-01 Ci I

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III-18 ENVIRONMENTAL SURVEY PROGRAM Introduction The environmental survey samples were collected in accordance with the schedules of the cooperative surveillance program between che Texas State Department of Health and Texas A&M University.

These samples were analyzed for gross gamma and beta activities and isotope identification. Data from these samples remained basically unchanged from 1978 and reflect the continued use of I retention facilities and sample analysis for laboratory effluents prior to their release. Sample analyses indicate that the activities are remaining at normal background levels in the un-restricted environment.

The environmental survey program was expanded in 1977 to in-clude the in-situ measurement of integrated radiation exposures at the site boundaries. These measurements are made for a period of approximately 90 days using commercially available thermoluminescent dosimeters (TLD's) of lithium fluoride chips in glass encapsulated bulbs. These dosimeters are provided and processed by Texas Department of Health, Division of Occupational Health and Radiation Control. Ambient background for these measurements is determined from a control dosimeter located southeast of Easterwood Airport approximately 800 meters east of the Nuclear Science Center site.

This location is at a right at.gle to the prevailing southeasterly winds which occur a large majority of the time on an annual basis.

Table 19 lists the average exposure rate above ambient back-ground for a number of locations at the site boundary. The highest exposure points at the nortn and west location of the site boundary.

Additionally, a dosimeter is located adjacent to the radioactive waste storage building and the instrument calibration range.

Exposure data from this dosimeter is not concidered as a result of reactor operations but does reflect the maximum site boundary exposure of 51 3 micro R/hr. This site boundary location is further protected from free access to the general public for an additional 100 meters of fenced Texas A&M University property.

A dosimeter at this location reveals only background radiations.

Sammaries of the environmental survey program for 1979 are presented in Tables 15-19

III-19 TABLE 15 ENVIRONMENTAL SURVEY PROGRAM FIRST QUARTER

SUMMARY

1979 WATER l Radioactivity (Pci/L)

Number Location Samples Average Maximum Minimum TAMU Sanitary Outflow 3 12.0 2 50 14.1 2 50 92 4.5 NSC Creek 1 340.0 20.0 White Creek 1 13 0 2 50 VEGETATION Radioactivity (Pci/gm, ASHED)

Number Location Samples Average Maximum Minimum NSC Site (OutTide Fence) 1 28 2 27 NSC Site (Inside Fence) 1 33 2.2 NSC Creek 1 19 2 2.1 Cyclotron 1 45 2 30 White Creek 1 14 2 30 )

MILK Radioactivity (Pci/L)

Number Location Samples Isotope Average Maximum Minimum TAMU Dairy 3 K-40 1190 53 1330 53 1100 55 H-3 <500 <500 <500

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III-20 TABLE 16 ENVIRONMENTAL SURVEY PROGRAM SECOND QUARTER

SUMMARY

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WATER Radioactivity (Pci/L) i Number l Location Samples Average Maximum Minimum NSC Creek 4 13 1 ! 51 25 7 1.4 White Creek 3 992 5.4 21 2.4 Sanitary Outflow 3 7.5 : 1.6 12 2 7.6 322 1.4 Upper Brazos 2 5.8 13 72 1.0 4.4 1.0 l

Lower Brazos 2 15 5 37 26 6.5 50: 1.0 VEGETATION I

I Radioactivity (Pci/gm, Dry. wt.)

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! Number Location Samples Average Maximum Min' num NSC Site (Inside Fence) 3 37.6 7 50.0 3.6 24.0 17 ,

'I NSC Site (Outside Fence)

White Creek 3

4 37 1 33.7 2 2.6 2.9 50.0 : 4.9 58.0 39 16.0 24.0 1.1 2.2 NSC Creek 3 31.6 23 4302 32 20.0 1.7 MILK Radioactivity (Pci/L)

Number Location Samples Isotope Average Maximum Minimum TAMU Dairy 3 Cs-137 72 4.5 8.9 : 55 5.6 3.6 I H-3 K-40

<500 1216 1 71 1220

<500 85 1210

<500 61 l

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III-21 TABLE 17 ENVIRONMENTAL SURVEY PROGRAM l THIRD QUARTER

SUMMARY

l 1979 WATER I Radioactivity (Pci/L)

Number Location Samples Average Maximum Minimum NSC Creek 3 46.9 : 8 38.0 12 6.8 2 4 Waite Creek 2 13 0 2 5 14.0 53 12 2 4.7 Upper Brazos River 1 7.6 ! 4 Lower Brazos River 1 1302 7 Sanitary Outflow 3 9.6 5 14.0 2 55 6.6 2 4 l

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! Radioactivity (Pci/gm, Dr wt.) i i

Number

Location Samples Average Maximum Minimum NSC Site (Inside Fence) 3 20.0 15 23 0 2 1.8 15 0 1.2 NSC Site (Outside Fence) 4 '7.4 2 13

_ 20.0 1.4 15 0 1.2 White Creek 1 24.0 1.2 NSC Creek 26.3 2.8 27 2.8 I 3 35 17 MILK Radioactivity (Pci/L)

Number Location Samples Isotope Average Maximum Minimum TAMU Dairy 3 K-40 1353 76 1430 : 86 1200 72 H-3 <500 <500 <500 I

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III-22 TABLE 18 ENVIRONMENTAL SURVEY PROGRAM FOURTH QUARTER

SUMMARY

1979 WATER Radioactivity (Pci/L)

Number lI Location Samples Average Maximum Minimum l

l White Creek 1 53 45 l Sanitary Out flow 2 37 l NSC Creek 2 109 11.5 124 12 94 11 Lower Brazos 2 52 2.4 8.4 4.8 2.0 Upper Brazos 2 10 3 6.5 14.0 8.7 6.7 4.6 l

VEGETATION

} Radioactivity (Pci/gm, Dry. wt.)

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Number Location Samples Average Maximum Minimum NSC Site (Inside Fence) 1 14.0 1.9 NSC Site (Outside Fence) 1 17 0 1.2 NSC Creek 1 18.0 25 MILK Radioactivity (Pci/L)

Number Location Samples Isotope Average Maximum Minimum TAMU Dairy 2 K-40 1180 104 1240 74 1120 134 I-131 54 13.5 H-3 <500 <500 <500 1

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TABLE 19 ENVIRONMENTAL RADIATION MONITORING PROGRAM INTEGRATED RADIATION EXPOSURE 1 December 27, 1978 - January 17, 1980 i Station Exposure Exposure Exposure Rate Number Location (Gross MR) (Net MR) (Micro R/hr) j 1 Background 59 59 -

2 NSC Fence Northwest 88 29 3.1 l 3 NSC Fence West 103 44 4.7 4 NSC Fence North 107 48 5.1 i

5 NSC Fence East 86 27 2.9 l  ;

6 Radioactive Waste j Storage Building 535 476 51.3 7 100 Meters East 1 of NSC Boundary 63 4 0.4 1

l #8 NSC Fence South in Line With Hyperbaric Lab 38 7 1.4 l *9 NSC Fence South in l Line With Living j Quarters 35 4 0.8 i

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• Measurements begun on July 5, 1979 with the establishment of qE temporary living quarters for the hyperbaric lab night watchman

'E located approximately 25 meters south of the NSC south boundary fence.

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III-2h RADIATION AND CONTAMINATION CONTROL PROGRAM Introduction The detection and elimination of radiation hazards is an integral part of the Radiation Safety Program at the Nuclear Science Center. The radiation and smear survey programs con-tribute to the control and elimination of these health hazards.

This program is effective in preventing the spread of radio-active contamination, improper storage of radioactive materials, and unwarranted exposures to radiation.

Radiation Survey Tne Nuclear Science Center uses an area radiation monitoring system consisting of nine (9) detector channels located throughout the Recctor and Laboratory Buildings. This system is equipped with alarm settings and remote readouts in the control and reception rooms. Radiation levels and operational checks are recorded on a daily basis. This system functions as a radiation safety monitor I for the early detection of impending radiation hazards. The Nuclear Science Center Facilities and site boundaries are surveyed monthly with beta-gamma sensitive instruments. These measurements are taken to determine proper storage and identification of radio-active materials and that visitor and routine work areas are free of radiation hazarda. Additionally, radiation monitoring support is provided for the reactor operations and experimenter groups to insure the safe handling of radioactive materials and control of personnel exposures. There were no unexpected radiation levels or improper storage of radioactive materials detected during 1979 I These surveys revealed only background radiations at the site perimeter fence.

Contamination Survey Tne Nuclear Science Center is routinely surveyed for radio-active contamination every week. This program includes the collection, analysis and evaluation of approximately 250 smear samples and the decontamination of areas and stored materials I with removable beta-gamma radioactivities of greater than 300 dpm/lon cm2 This program was effective in the elimination of contaminated areas and ascertaining that visitor and personnel traffic patterns were free of radioactive contamination.

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- PERSONNEL EXPOSURES E Radiation exposures to personnel at the Nuclear Science Center for 1979 were within the limits of 10CFR20. The maximum exposure

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received by an individual for the year was 1060 mrem. It is expected that this value will be reduced to less than 500 mrem for the next reporting period by revising certaln procedures. A total of 5.610 MANREM was received for 1979 More important, the exposures I reflect an extended effort by all personnel to minimize and eliminate radiation exposures whenever practicable. These exposure data becomes more significant when one considers that in addition to

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routine reactor operations, over 11,000 samples containing 1050 curies of radioactivity were produced and processed at the huelear Science Center in 1979 The whole-body exposure data for NSC employees and experimental personnel are presented in Table 20. These data are presented in graded divisions as required under 10CFR20.202(a).

The access control procedures for visiting personnel were effec-tive in preventing exposure to radiation. There were 4,029 visitors to the Nuclear Science Center during 1979 The maximum I exposure to any visitor was less than the minimum measurable quantities. These values are 10 millirems for X or gamma, 40 millirems for hard Beta, 20 millirems for fast neutrons and 10 millirems for thermal neutron radiations.

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1 i TABLE 20 i '

f PERSONNEL WHOLE-BODY EXPOSURES I 1979 l

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l Annual Whole-Body Number of Individuals i

Dose Ranges (Rems) in Each Range No Measurable Exposure 9 l Less than 0.100 30 1

0.100 - 0.249 4 0.250 - 0.499 2 0 500 - 0 749 4 0.750 - 1 990 0 1.000 - 2.000 1 Greater than 2.000 0 1

Total Number of Individuals Reported: 50 I

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f9; -y Ed -

u V If you applied-prior to 1980.(i.e.Lfor admission.to the-entering: I class of -1979 or earlier) your file has been _ permanently inactivated. This -

3 meansl.that;you will need to solicit _new evaluations from your -

instructors.:

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LIn' summary,' evaluations can'be used'only_for two consecutive' application

. years.

C. 'Having Evaluations 1Se'nt Since you won't:be applying until af ter: June List at' the earliest it:is strongly suggested that you: follow the procedures described

- below:. -

1. Apply to all the dental schools'as soon'as they will accept applications (See Section III).

2.. Send the completed yellow REQUEST TO SEND EVALUATIONS form (attached) to the Premedical-Predental Advisory Committee listing all the schools ' to which you have applied and to which evaluations are to be sent.

NOTE LYou should make every effort to have-all your evaluations

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• submitted and on file before the end of summer and. mailed off to the dental schools before the end of September.' Most , ,

dental schools will not invite applicants for interviews ,

until they have received the evaluations. Late mailings of evaluations, like applications, do not work in your favor!

Do not send the form -to the committee until AFTER you are cer-tain all evaluations have been received and you have filed all your. applications. You may check ~ to see whether all your evalu-ations are in by visiting, _ telephoning or writing the Premedical-Predental Advisory Committee office (the telephone number and address are'on thelfront:page of this handout). Any " Request to send

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Evaluation" forms received by the office before all evaluations are:on file will be returned to the applicant.

VII. TRANSCRIPTS -

A.' Where to Send Then Transcripts should be ordered from the - Registrar of EACH college -

J or universityf you have attended. Official transcripts (i.e.,

w ith 'the Registrar's signature or the seal of the school af-fixed) Tare required.by:-

. UT-System Medical and Dental Application Center

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BaylorLCollege of Denistry .

Out-of-State; dental schools not participating.in AADSAS

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.AADSAS will' accept unofficial transcripts, but the~in-cc- , dividual schools wil1~ require an official transcript at-

.some. time prior'to. final acceptance. Check AADSAS application

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cfor. instructions.~1 Some schools l require-official transcripts ito' be sentz to them directly at' the ties, of application.<

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10. _ []

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t iB. Supplemental Transcripts- q

,, . At - he and hf;the SUMMER, if'you attended sumesr school,_re-- _

-quest}the Registrar to send an official' transcript to:.

I ~ UT-Sys' tem Medical and Dental Application Center Baylor College-oftDentistry

- Out-of-State dental schools not participating in AADSAS

-AADSAS-participating schools which have requested an official

. transcript i

At(the end of L the' FALL semester, request the registrar' to send  ;

.an official; transcript showing your, fall course work-to ALL a OF-THE:ABOVE if your-application-is still'being considered.

~ C. How CPAs:sre. computed: :l L

- Your GPA must?be calculated according to each school's in-structions, which may' differ. In general, your CPA is com-

puted on the basis of work'done at'all colleges and univer-sities attended ir. the following ways: cumulative (overall),

science, and by semester.

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f-VIII.' PERSONAL NARRATIVE ,

.In,considering~ applications for-admissions to dental schools admissions com- '

, . mittees use a wide. variety of-information. An important-component is re--

Llated to such factors as motivation, attitudes, interest. and values. Each (application has a blank space' which has simple instructions such as "This space may be used in any way you wish." In addition ~to-the above-mentioned factors the dental schools would~1ike to know whether or not the applicant 7 ,

.has explored ~the realities of dentistry as well as some indication of the '

1 -amount of health or service related experiences that indicate interest and knowledge:of dentistry and an ability to work and communicate with~others.

This narrative-should be written in a logical, coherent manner indicative I: ~ .of a nature individual with appropriate judgement. A narrative that is personal, has' substance and reveals the author as sincere and realistic c is much'more impressive to admissions committees than'one which is poorly written:with loose,. inappropriate or repetitious and trite statements. In

this regard-applicants would be well advised to neatly type their responses

. , when_ filling out-their applications. By all means don't leave this space ,

blankc- write <somethingI

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) IX. .- INTERVIEWSI Both~the'UT Dental Branch at Houston and the UT Dental School at JSan Antonio interview competitive applicants as part of the admissions L . process.'

'Baylor College of-Dentistry interviews all students who are accepted.

Only~the most: competitive students'are interviewed.

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0ut_-of-state schools': policies to interviews vary widely, with some  !

schools requiring'a personal-interview, some making it an option for ieither the applicant'of the admissions committee, and others granting

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-no interviews at.all..

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