ML20095B427
| ML20095B427 | |
| Person / Time | |
|---|---|
| Site: | 05000192 |
| Issue date: | 12/31/1991 |
| From: | Bauer T TEXAS, UNIV. OF, AUSTIN, TX |
| To: | Robertson C ENERGY, DEPT. OF |
| References | |
| NUDOCS 9204220190 | |
| Download: ML20095B427 (42) | |
Text
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April 14, 1992 Carl Robertscn U.S. Dept. of Energy Idaho Cperations Office 785 Doe Place Mailstop 1131 Idaho Falls, Idaho 83'G2
Dear Sir:
Enclosed are seven (7) ccpies of the Annual Report from the Nuclear Engineering Teaching Laboratory at the University of Texas at Austin. These documents are being submitted according to contract CE-AC07-ER03919 Amendment A015. Sincerely,
, k - ms ,.7 la w-Thomas L. Bauer Assistant Director riuclear Engineering Teaching Laboratory TLB:mm Enclosure Districation 1 B. W. Whring 3 ;JETL
-h Doc"m-nt Control Desk - !;FC 1 Region I'! - JRC 7 DCE Klein 1 Diller 1 Safety Office - UT c n e
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4 1 , s ,; & ilu " s s. _ e o NUCLEAR REACTOR LABORATORY TECHNICAL REPORT ; THE UNIVERSITY OF TEX AS 3 C O 1.1. E G E OF ENGINEERING DEPARTMENT OF MECil ANICAL ENGINEERING
l u e s e a 1991 A!!N't'AL REPORT of The University of Texas at Au _in Nuclear Engineering Teaching Laboratory - at Taylor Hall Roon- 105 January 1.1991 - De cembe r 31 1991 Bernard W. Wehring, Director 512/471-57E7 T. L Eauer, Assistant Director / Reactor Supervisor 512/471-5787
. ?! arch 1992 Balcones Researrh Cente:
, Nuclear Engineering Teaching Laboratory 10103 Burr.et R t. a d Austin, 'I e x t s 7E75E
1991 TABLE OF CONTENTS List of Tables. .3 List of Figures . .
- 1. Introduction.
II. Labor tery Adninistration. 10 A. Organization B Personnel C. Comnittees D. Colle; e Report . III. Laboratory Levelopnent .15 A. Organization E. Nuclear Engineering Teaching Laboratory C. Nuclear Reactor Laboratory D. Nuclear Radiation Laboratory E. Neutron Activation Analysis Laboratory IV. Facility Operations Summary. 19 A. Operating Er.perience E. Reactor Sh'tdons. C Reactor Utilitation D. Reac tor thintenance E. Facility Changes F. Area Eadiation Surveys G Eadioactive Eftluents and k'aste V. Laboratory inspec ions. . 2 '. A. NkC Inspet: ions .
- 5. TDH Innpections
- VI. Public Service A tivities. 3; Vll. Resen ch Activitiss. .j3 VIII. Publications fron the % clear Engineering Te aching P: cgrarr . M 2
l _ ._ ________-_______.m_ - _ _ . - . _ - _ _ _ _ _ _ _ _ . _ . _ _ _ _ _ _ _ _ _ _ _ _ _
1 i 1991
. List of Tables
- T at h ';c . hye
- 1. Ad:rinist rat ion and Corrrtit t ees 12
- 2. Facil'ty Tersonnel 13
- 3. University Courses 1B 4 Reactor Safety System 20
- 5. Sa f e ty Sys tert, Events 20 6 F c J f o rtsanc e D:, t a 21 Annual Uti'li::a t ion Dat a 2;
- 5. Sun.:ary of Personnel Radicion Exposures 26
- 9. Radiation Exposure Croups 26
- 10. Laboratory Radiation Lavels 27 _
11 Labc atc ry Cont aminat ion Leve', s 27
. Enciroomm tal Surveys 2t 13 Monthly Gaseous Waste Discharge '9
- 14. Manthly Liquid War.te Discharg( 30
- 15. Monthly Solid Waste Disposal 30
- 16. Ec se a rch undirq n d
3
l 1991 l List of Figures l-- Figure ;o. Page
- 1. Site Location of !;uclear Engineering Teaching Lnberatory 8
- 2. Floor Plan of !;uclear Engineering Teaching Laboratory 9
- 3. Organination Chart of the !;uclear Engineering Teaching Laboratory 11 e, Annual Eu.nup versus Operation Year 24
- 5. Samples Irradiated versus Year 2 W
e 4
I991 l
- 1. INTRODUCTION
! The Nuclear Engineering Teaching Laboratory (NETL) at The University of Texas at Austin prepares at annual report to provide infornation about progran activitits. Inf orr:ation in this repcit satisfies the requirements of the U.S. Nuclear Regulatory Commission (NRC) docket number 50-192 and the U.S. De ;, a r t me n t of Energy contract numbe r DE- Ac 0 7 - ER03 919 AmeniT e nt A015. The report covers the period from January 1, 1991 to Decerber 31, 1991.
/setivities of the NETL program are part of the College of Engineering Dcpartrent of "echanical Engineering Development of the nucleac program by the university began in the years prior to -
1960, with the location of most of the progran, activities in one of the original engineering buildings. Building space in Taylor Hall has provided classroom, laboratory and office areas by the year 19f5 the nuclear progrum was the only <ngituering program still functional in the building t hat has becene the loco: ion of the College of Natural Sciences Departnent of Comp'tei Sciena Other university organizations such as the Con >ut at ion Center are also in areas of the building.
~
eXLol_.Ua11 Most NETL prograr laboratory activities we re at two locations in Taylor Hall Floor plans of thcr twc l ab o r a : t. ry areas, a Nuclear Reactot Laboratory and an Activntion Analysis Laboratory, are sh;wn in Figures 1 and 2. The Nuclear Reacroc Laboratory is the site of a TRICA Mark I reactor that has st(ace state and pulse modes. Po.er operation of :he reactor was at 250 kilowatts steady-state and approximately 250 megawatts pulse At the time of initial facility acceptance the pow r levc1 was at 10 - kilowatts. The Activation Analysic Laboratory providc d gan a spcctroscopy systems for analysis of neutron activa: m reactions. These reactions are produc t s of irradiation c xperirent' i t. reactor experiment facilities, Data acquisition and analysis was done with hich efficiency high resolution detectors. :n:rinsic purity germa:>ium detectors provide radiation dete::icn with autocatic control and acquisition systems run LS nicroconputers. 0:hcr NETL program laboratory activit2es ar< aos functional at building 159 c. the Lalcones Research Cente: Ti c fa:ilip, prevides multipurpose facility for several eng.. nee:ing and s c ie n:( programs. A Nuclear Radiat ion Laboratory prm ided an c xperiment facility for flux and energy measurements of nectrons fron f'aion, fission and other neut ron produc tion reac tions . ~hret sc -. t
~
aVailable are the D T rehC!icn [ Tom a Cod.cr0ft-Walt'% CVpe accelerator, spontaneous fission reactier from the . < o t o; e
, Chilforniun 252 and the alpha-neutron :c act io: *ron ; . ' t o r . i u' belVllium. Activities o[ the laborator3 i!Klud d L t:u t2 i F e ci s u r e r e n t and analVsis.
l
_ ._- - -.. ~ ~ ~.. - -- .. - . - _ . . - - - . _ - . - -~ 1991
.NETL program equipment and materials provide support for-different types of facility activities. Supplemental equipment and radioactive materials include a suberitical asscmbly, gamma irradiator, portable x-ray unit and variout. isotopic radiation .. -sources, Equipment, instrumentation systems and detection dev2ces l for monitoring, measurement and calibration of ionizing radiat' ion are in routine use or available for special applications.
Radioactive material inventories contain radioisotope sources for gamma rays, neutron emit ions, x-ray excitation, and reference standards for several types of experimental wcograms. Developmental goals of university and engineering programs l , have been the major cause of c;.ange to the NETL program, L Initiation of a project to move activities of the bETL program to 1: the Balcones Research Ccater (BRC) began in Octcher 1983 and was ! l completed in August 1991. The program move is in response to l needs of the main campus for expansion of other educational i programs, addition of research facilities, and the development of the research center into a major research site for science and
- engineering.
A Disnantling and Decommissioning plan (DDP, docket 50 192) for the Taylor Hall facility was submitted to the Nuclear Regulatory Commission (NRC) on May 3, 1955. An order to authorice the activities'that will lead to the license tereination was issued on March 9, 1967, Proj ec t plans indicate that the DDT activities will occur in the third or fourth quarter of 1992. The l R 92 operating license has been amended to a possession on1', ) license. hailding_lES Belcones Research Center
- l l
l' Proj ec t authorization to move NEla program acti ei ties to the Balcones Research Center (BRC) site was approved by The Unive rsity _or Texas.Systen Board of Regents on October 13 1983. A submittal-for a construction permit and an operation license was made to the Nuclear Regulatory Commission on November 9, 1984. Subsequent to a site visit on January 22 thru 24 a license amendment was rcquested on February 27, and responses to NRC questions were prepared. -T he construction permit was issued June 4, 1985. ' Preliminary architectural and engineering plans were approved by The University of Texas System-board of P.egents on [ _ August.8, 1985. Final plans were approved on April 10, 1986 and the bid to a-general contractor was awarded on December 4, 1966 CIT Construction Inc, of Stafford, Texas, was specified as the general contractor and start of construction was recorded on February 10, 1967. Facility completion was scheduled for 16-16 months after start of construction. Proj ec t delays by the general contractor led to removal of the contractor. Completion of the
, project was the responsibility of the surety, Firenans Insurance Company. Acceptance of the building for occupancy-was on May 1 1989, with subsequent termina: inn of conn ruction contrac:
act ivi ties on January 31, 1990 6
J 4 1 1
- i. -
1991 li i {1 1 j .- The Balcones Research Center facility provides laboratories ; i for the TRIGA reactor, a neutron gcneratcr, radiation treasuretrent i [- .;y s t err s , preparation a'd processing of' radioactive samples, and i
- j. office space. Although the facility will move the present TRICA l
facility and other program activities into a single building at , the Research Center, several ireprovertents to the reactor facility l vill er. tend facility capability. These include above ground I shield structure for access to horizontal beam tubes, and an ! increase of pow r and pulse paraue ters. plans are to utill e the l l~ present fuel and move some other components from the old to tne I 4: new facility. A-few cortponentr such as control rod drives have l been subject to rework procedures to assure appropriate functional j operation. Many corrponents such e.s react or s tructure , instrumentation, and control sys tem are new unnponent s . =l h I I i 4 i t { l \ 6
-7
1991
}D E ,
a TAYLOR HALI. da (jit-DZ 11 ._ FJi . T-dl I _
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. Figure 1 Site Location of Nuclear Er:gineering Teaching Laboratory 1
8
1991
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l Floor Plan of Nuclear Er:ginee ring Teaching Laboratory 9
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1991
-II. LABORATORY ADMINISTRATION >
A. Organization-.
- The present organizational chart of the NETL program is ,
presented in Figure 3, Budgeted NETL funding for the primary staff is provided for a Supervisor / Assistant Director, research associate; operator, secretary, and part time assistant. Budget support is divided into full time positions for supervisor, reactor operator, rescarch associate, and secretary. The balance of'the budget supports a part time assistant,' typically halftime, such as a student, Additional funds now support a full time health physicist position. Other funds for the next several years are to be available for up to 2 additional positions associated with reactor experiment progrcms. B. Personnel Personnel associated with the laboratory consist of NETL u staff, faculty, students, and certain other university personnel . l- The personnel-involved in the NETL program during the past year l ~are summarized in Table I. C. Standing Committees , Two committees monitor the activities of the NETL programs. The Nuclear Reactor Commit tee functions through the College of Engineering and the Radiation Safety Committee functions through the Office of the President.
- 1. Nuclear Reactor Committee The Nuclear Reactor Committee convened to review the l activities related to facility operation during each quarter of the calender year, Committee meeting dates were January 4 April 4, July 24, and October 15, 1991. The committee compositior. is shown in Table 2. Committee responsibilities are the reacto:
-operation, associated facility activities and engineering programs.
- 2. Radiation Safety Committee The Radiation Safety Committee convened to review
- radiological safety practices at the university during each academic term. Committee meeting dates were April 22, 1991 and
, November 19, 1991. The committee composition is shown in Table 2.
Committee responsibilities are the activities of universit;, research programs that utilize radiation source materials. 10
1991 j office, President
' University of Texas at Austiti
,. I ! I Radiation
- Sate:,
Cor:rittee i
! i 1
i ,. Executive '! ice President and Provost u i . 1 l - Dean I College af Engineering ' i l Nuclear i i l'+ a c t o r } g { Ccamittee I i 1 ~, i i Chairman - i
^
7>e p a r tree n t of 1 I Mecha*ical Engineerirw- ! - I i 1 l \ l Director ' t:ucle ar Engineering;_ _ _ _ . . _ - teaching Laboratorp i j ; i i I I i t i Supervisor ; L_ _ _ _ _ Reactor __ _. _ _ ._ Operations ! Re s po n s ib i l i t s. _ Cor:runi c a t i on __ 9 Figure 3 Organica-io: Chart of th* N u c '. e . Eng;neerirr Teaching 1.abora or-11
1 ,
- - 1991 n ;
1 l~ L i !. Table 1 h Administration and Committees i ~ -l j idministratinn l j The University of Texas System Board of Regents ! ! Chairman Louis A. Beecher1 Jr. l j-( Vice Chairman Sam Barshop l i Vice Chairman Bill Roden , l Executive Secretary Arthur H. Di l l_, ' f i- Member (1991) Member (1993) Menber (1995) i J.S. Blanton Sam Barshop K.J. Cruikshank S.H. Rat l iff LJA. Beecherl Jr. Tom loeffler ! Bill Roden W.A. Moncrief Jr. M.E. Ramirez l Chancellor Hans Mark j The University of Texas at Austin l President William H. Cunningham j (app: 9/1/85) ! i ecutive Vice President and Provost Gerhard J. Fonken n (app: 9/1/65) Dean of the College of Engineering Herbert H. Woodson . (app: 9/1/87) Chairman of Department of Kenneth Diller Mechanical Engineering (app: 9/1/90) Nuclear Reactor Committee
. Chairperson: H. L. Marcus (app: 9/1/77)
Membe:- B. W. Vehring(app: 9/1/90) i Member: D. E. Klein (app: 9/1/77) ! Member: J. C.-Reis (app: 9/1/90_) l R S., Charbeneau (app: 9/1/E9) Member: Member, student: J. McWhirter (app: 9/1/89) j Ex officio member:-T L. Bauer (app: 6/1/7 T l Ex officio member: H. W. Bryant (app: 11/1,73) : Ex officio member: H. H. "oodson (app: 9/1/87) l Ex officio member-.: K R. Diller (app: 9/1/90) Radiation Safety Committee Chairperson: E. L. Sutton (app: 9/1/84) .
' Member: G. W. Hoffman (app: 9/1/84)
-Member: D-. E. Klein (app: 9/1/83)
Member: S. A. Monti (app: 9/1/E5)- Member: L. O. Morgan (app: 4/1/! n i Member: B. V. Wehring (app: 9/1/89) ! Member: B. Cook (app: 9/1/89) Ex officio member: H. W. Bryant (app: 11/1/73) ," Ex officio member: W. H. Cunningham (app: 9/1/85) V a. 12
--.- - . _ . ..-..-_-_ - - ~ - - - . - - . _ - -
1991 Table 2 Personnel f_alfli;y Pe r s onn.e1 ,
. Staff S Director B.V. Wehring Assistant Director / Supervisor T.L. bauer Managc r of Analy tical Services F.Y. Iskander Manager of Neutron Beam Projects K Un10 Manager of Reactor Operations M.C. Krause Post Doctoral Fellow T. Emoto Health Physicist R.C. Wooda rd/J ohn C. White Nuclear Technical Specialist I R. Manteufel Ad:rinis trative Assoc iate J.G. Rawlirgs Senior Office Assistant M. McGee Eup_por- Personnel Safety Personnel Safety Coordinator b.V. Eryant Radiation Safets Specialist L.W. Hamlin 5 Researchers College of Engineering T.L. Bauer Nuclear Reactor Lab.
F.Y. Iskander Neutron Activation Lab. Research Associate Faculty N.E. Hertel Nuclear Radiation Lab. Assoc. Prof. D.E. Klein Mech. Engineering Prof. University Depertmerits 5 D.S. Barker Geology Prof. T.L. Bergman Mech. Engineering Assoc. Prof - J. Reis Pet. Engineering Assoc. Prof, P.S. Schrridt Mech. Engineering Assoc. Prof. D. Str i th Geology Prof. Student.s Graduate Assistants G. Miller Euc-Pen Cheng J. Kim H. Vega Carrillo E. Hall C. Rios Martine B. Nabelsri J. McVairter Undergraduate Student Assistants
~
R Manteufel- S bertrum-McEnc 5, Midgett C. Lindemann W. Easella M Rannaque 13
10'41 D. Report to tFe College o f Er.!;ine< -ing i j Each year the Re ac t or Com:r,ittee provides a repor t to the Dc m .. of the College of Engineering describing activities of the committee and a review or assessment of the operat. ion of sprcific portions of the NETL program concerning the reactor and other radiation troducing equipt:cnt Note: bids for the facility at the Balcones Research Center s e : e cpened October 21, 1986 and award of the ge:.eral contract was approved Decenber 4, 1966 The University c.f T<xas Systen board of Regents entered into a contract with CIT Construction Inc of Stafford. Texas. Total p: r lect cost , for the proposed facility was $5,452,560. An additional
$405,140 is being held in reserve for dismantling ;etivities -
at the Taylor Hall facility. Authorized total cent. is
$5,En0,700.
e 14 l l
p s 1991 IlI. IABOPATORY - DEVELOPMENT
- . A, Organitation Dr. Bernard W. Wehring as_the Director of the NETL Program.
has beenl responsible for laboratory development. Dr. Thomas L. Bauer. continued as Reactor Supervisor / Assistant Director Juring the past -year. . The-facility staff during the 1991 calendar year consisted of three managerial positions, de,ignated for Reactor Operations, Neutron Analytical Services and Neutron Beam Projects. All three positions'are held by present staff. The Nuclear Reactor Committee had no changes during the 1991 calender year. Dr. H.H. Woodson continues as the Dean of the College of Engineering. Dr. K.R. Diller continue as chairman of the Department of Mechanical Engineering. Dale Ktein continues as Associate Dean for Research in the College of Engineering.
.B. Nuclear Engineering Teaching Laboratory The Nuclear Engineering Teaching laboratory is part of the
-Nuclear Engineering Program at The University of Texas.
The Nuclear Engineering Teaching Laboratory's central feature-is a Mark I TRICA. thermal fission reactor. Originally licensed by.the Atomic Energy Commission to operate at 10 kw in 1963, the nuclear reactor and the associated laboratory equipment have been updated over the past years and the research capabilities of the Laboratory are now more diverse. In 1968, the facility license was amended to allow the'TRIGA reactor to operate at a steady state power level of -250 kw shich increased experimental capabilities. Routine operations of the reactor were terminated on April. 30, 1988 in preparation to. move facility operations. No reactor operation was performed during 1989 or
- - 1990c Several key routine surveillances will continue to be '
-performed until fuel is moved. Fuel was moved from the Taylor Hall _ site to-the Balcones Research Center in Augusc of 1991.
Other radiation producing devices maintained by the Laboratory are a 750 curie Co.60 irradiator,- vertical neutron beam
. tube,:subcritical-assembly, industrial x-ray source, 14 MeV neutron generator, and several isotopic neutron sources.
Different-types of radiation detection devices provide the capacity to monitor or analyze the various radiation sources. One'of the functions of the nuclear reactor and its associated equipment has been to teach and demonstrate the ; ,, fundamentals of reactor operation. Another function has been the 1 demonstration of specific applications of nuclear technology. l Classes that. routinely utilize the reactor facility and a few l others that use the facility on an infrequent basis will resume .; I 15 l
4 1991 , normal 1 schedules as facilities become available. Classes such as ME.361F and ME 389R have been-scheduled for the Balcones Research Center NETL facility. No tours or class activitics are presently j being pursued at Taylor Hall. ; i. _ Access to the Taylor Hall facility has been curtailed , pending the dismantling activities. All activities of the program
;.- have been moved to the BRC site. Reactor fuel from Taylor Hall was moved to the reactor pool and storage wells at the BRC NETL facility.
, The use. operation, regulation and inspection of the Nuclear L Engineering Teaching Laboratory as operated at Taylor Hall room ' 121 and BRC building 159 is controlled by the United States Suelear Regulatory Commission, the Nuclear Reactor Committee of l The University of Texas, the Director of the Nuclear Engineering - l Tea ^hing Laboratery, the Radiation Safety Committee and the Texas ' l_ Department of Health Division of Radiation Control . I C. Naclear Radiation Laboratory "
~
The Nuclear' Radiation Laboratory is utilized by etaf f and ' students of the Nuclear Engineering Program at The University of j Texas at Austin. A 14 MeV Texas Nuclear neutron generator is the main feature of the laboratory, Five californium 252 neutron sources are also available for use. The facility, with installed ! shielding, provides an area where students and staff can perform , I experiments utilizing not only the high energy neutrons from the l neutron generator but fission spectrum neutrons from Cf252. In addition to the neutron generator and the caltfornium sources. other smaller tadioactive sources are also used within the ! confines of the Nuclear Radiation Laboratory. . The laboratory was located in an area of the Engineering : Science Building. Equipment for radiation measurements have been moved from the ENS site and the area released by survey for unrestricted use. Activities are now part of the BRC facility, Bldg. 159, room 1.102. All radiation sources for this room 1,102 laboratory are subject to the university broad license for radioactive materials and radiation producing equipment. ' D. Neutron Activaticn Analysis Laboratory
~he Neutron Activation Analysis Laboratory has provided nu: lear analytical support for individual projects ranging from student p roj e c t support for classes to measurements for faculty tasearch projects, Student project support is in the areas of engineering, chemistry, physics, geology, biology, coology, and other areas. Research project support includes elemental I'
measurements ..r environmental and investigative research ! projects. Scientific articles based upon the results of sponsored ond non sponsored research by this laboratory have been published cr accepted for publication in several journals and proceedings, and have been presented at conferences at the state, national and international level. l 16
1991 P.adi at ion mc asurement sjs tea.s available include gamma-ray spectro.icopy with three HpGe detectors coupled to a microcomputer controlled acquirition and analysis system, Si(Li) detector and cultichantml analyze r for X- ray measurements , alpha-beta
. proportional counter, scintillation detectore, neutron detectors and associated electronic rrodules to accortplish several types of s t anda rd ' uc lea r tr easure:te nt s . An important function of the laboratorv is to support various research applications with the neutron activation analysis method or other techniques related to auclea r radia t ion me act.reme nt s . This laboratory is fully functional at the 3RC site, Bldg. 159, room 3,ll2m All research and teaching activities at the Taylor Hall site have been c o:r p l e t e d .
num 0 17
l 1991 Table 3 Courses Utilizing the Reactor and Associated Facilities Course Number Course Description Mechanica.l_Ercireerk d u attrent ME 361F Instrumentation and Methods - radiation measurements, reactor ins t run-e n t a t io n . ME 361G Reactor Operations - reactor kinetics __ reactor parameters, instrumentation characteristics and regulation. ME 37'M Projects in Mechanical Engineering - individual study and experiment proj ec ts for undergraduates, ME 3MR Nuclear Engineering Laboratory studies for graduate students in nuclear methods in measurement and analysis, ME 5:39R Special projects course for nuclear ens,ineering laboratory studies as a s untnie r course for foreign students. ME 29' Current Studies in Engineering - special proj ects course for graduate study of selected topics. 4 d 18 ;
l i 1991 IV. Facility Operations Summary 0; e ra t ing Experience No reactor operations, pulse o r s t eady - s te:t e , have been performed since April 31, 1938. Established operating procedures and other required procedures remained unchanged. Routine reactor operation retrained terminated throughout the calender year. No pcwer operation was performed. Fuel remained in a storage configuration until shipment during August 1991. E s t i:ra t e s and measurements of the reactivity astablish the onfiguration to be a Keff < 0.3. Amendment of the facility 1icense has been made for possession only. Activities for the 50 192 facility consisted of surveillance - and ai inistration. No new experiments were proposed or approved. Jadiological surveillance activities continue on schedule
? Reactor Shutdowns No scrams can occur with the storage condition of the reactor The data in Tables 4 and 5 are for re fe rence only.
Reactor shutdowns (scramsi occurring during the reporting period are summarized in Table 4, categorized according to the type of initiating event. Safety system scrams are protective e ac t i or.s to shutdown the reactor that are caused by the proper operation of the safety system but are not the result of an operator error er an intentional action of the operator. Operator error scrams are the result of j udgement errors or procedural errors. Instrument and power fu lure scrams are protective actions that result from loss of nafety system function. Intentional scrams are operator initiated scrams such as tests.
"anual action sc rams are classified either safety or intentional -
as determincd by the cause of the manual scram action. Inadvertent sc rams are all unintent ional shutdowns ot the reactor by the p ro t e c t ive action of the safety system. Table 5 compares the nu.mber of iTadvertent shutdowns during this reporting period to previous reporting periods. o
k 1991
- Table 4
- ,, Reactor Safety System *
(scrams) ' Sa+cty System 0 Operator' Error 0 instrument Error 0 Power Failure O Subtotal 0 Intentional 0 (- Total 0 Table 5 Safety System Events
- h (inadvertent) l '.
1971 13 1981 7 1972 6 1982 6 1963 10 1973 10 1983- 6 1964- 0 1974 4 1984 5-INi5 3 1975 7 1985 2
- - i966. 4 1976 .5- 1986 9 1967- 3' 1977 9 1987 2 1968 11 1978 11 1988 1
. 1969 '15 1979 12 1989 0-
'1970 11 1980 '7 1990 0.
1: i: l' l: 7 i \~
, .
- No reactor operation during the years of 1989 to 1991. '
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l l 1991 Table 6
, Performance Data 1991 (4)
Reactor Operation Hours, Fuel Burn up and Irradiated Samples QuartcI r Reactor Total Burn-up Samples Operation Fuel Irradiated (hours) (kwhrs) (nu:tbe r ) First 0 0 0 l Second 0 0 0 Third 0 0 0 Fourth 0 0 0 Total 0 0 0 htes: (1) Reactor operation hours record the console key on time - or the time power is applied to the rod control system. Third and Fourth greater operation time attributed to fuel movement activities this reporting period. ( 2 .1 One full power hour is 250 kilowatt-hours. ( 3.) Sartples that are irradiated in the experimental fa-ilities of the reactor such as the RSR, PNT or C: (G) No reactor operation during the year 4 21
1991 ga 49-i l R,' e;< s.. Tible 7 T~o < Aramal L't i; i r a t t en Da t a Y4 ir Reactor Total Burn up Sanples Teratten R.e i Itradiated (houts) ( b.'h r s ) ( nuntbc r ) 14' 15u $ n.6 265 1 a's h2.6 23168 2449 i M: 3 2LO.B ~s 985 14b? 19'O 222.0 '6477 1640 ll 262.5 ,!912 2990 14 2 222.4 483B9 1946 1 i' 3 318.6 .d794 1347 l '> ' a 226.5 27641 778 1!! 207.0 20'450 . 263 1 'l6 J35.7 11312 468 1J 119.3 7509 164 19~a 171.9 2(8/0 178 1479 311.6 '2616 1569 Ino 18 .I 11760 150 1M1 258.5 18165 330 1982 2:47.6 16150 294 1M3 26G.2 J1028 477 17# 4 179.6 24806 667 13;5 139.9 18t07 473 1M6 18),1 19660 633 l'i' 93.9 43786 1394 1%3 147,1 2J.257 941 1ng ?3.9 o o 17 0 0 0 0 1531 0 0 0
o t a i 4893.7 s30188 20967 Note:
.1) Dat,s for 1967 it)Cludes all data recorded for previous oper nion at 10 kW f rcan 1963 1967.
2 <:pe r at ion puwer of 250 kilowatts was initiated in 1968
~
No operation after 1985.
+
d=
)
1991 C iti.li = tion 4
., '-+: tor util! ration da m is no lon;er applicable as m n arized in table 6. /, s.mn ary of reac t or utilization since ini t i al e -i t ica l i t y i s shown 11. T a t>1 e 7. Bar graphs comparing i :.ruual h nup and quantities of sanples irradiated since initial i- c r it iall' y are shown in Figures; a and 5. The 50 192 facility dici i not i: radiate .ir.y samples during the years of 1989 to 1991. l D. Maintenance Onring this reportinr, period maintenance consisted primarily of water synti-m repair and adjustment. Air particulate continuous air reni tt>r and area radiation monitors reonin in routine ope r a: !an at,d s urveill ance . ;
E F ai!!:y Changes
?;o operation of the reactor in the steady. state or pulse mde is planned pending removal of equipment and components. No
~
1acility : bang.c s were made durirg this reporting period. All fuel cler< ts were removed o the Balcones P,esearch Center NETL j hul i n t; 159, ; i 4 i l I i i t 9 t 23 i____ _ _ _ _ _ _ _ _ _ _ _ , _ _ _ _ _ , . _ , _ _ _ _ . . . _ , _ , . _ _ _ , _ _ , _ _ _ . . _ _ , _ _ _ _ . _ . . _ . _ _ _ _ _ _ _ _ _ _
1991
/
4 i i w.. .o o 3 , J'y,,, se. -
- u. , -< - -
*l _ . _. _ _ . _-
_!1 C.cax2_Q.A.fiflDj3 Q.& D. _O_ o .. i, i. n n n n n a n n ,, , ei ,, ,, ,, ,, . ,, ,, Annual Burnup versus operation Year rigore 4 Sanples O tetet tear 3%e . 2000 , 356d4 seta. 1554- - . 19d9 _.L1 ... u.m. ..._ ___
...C M n n _._n_D_D S_ j3_b_._4 a ., a n n n n n a n n 2, i..i,,,,..,,,,..
Figure 5 Sampics Irrac!!ated versus Year 16
1991
- <ii a t . m t',.; o r u r e s b
A . m e ar~ ot radiction exposures duting this reporting , ; e r ! < -l to facilit personnel, s t udent s . and /isit ors is shc.wn i n Ale s. The averace expop..re per individu I and the greatest e
.;. '<re pe. indiv! dual for each group is summatired in Table 9.
. .o iqnsures in excess at the limits of 10il"8 20 oc c ur red dur ing i p.+ r i e;t .
~
A rc a P a d i c ' :m S u rve y s m' ,11 .try of the normal radiatian levels neasured in
' i 1 borat or- it shown in Table 10 The result, of rcutino ir f + e u :d ;,el water contamination surveys are s un n.a r i z e d in '
'v '.e 11 & i ! : < nn. ntal survevs perf orned out side the laboratorv -
marin i n Table 1.'
- l. P etloac * .m J. f f l ue n t s 1 , < nu e 'la s t e s Gas < mn discharge during ; criods of ro ,e t or ope ration ms ii t t ! 'f leakage of Ar41 from the reactot laboratory.
The !.ai e + laated a nio un t of radioactiv!'i r*leared was calculatt i ba r.e d on e x;.e r i me n t a l da t a . !!o radioactive g m ous i! rharges were made during the reportiny. period.
, id Waste
'o lir '
cadioactive waste was discharged during the repor' o pecind. Etfortr. are tr a d e to avoid liquid waste disp,*al by appropriate e"aporation or .ib sorption techniques
'or m il c e l v: e s and purification by recin treatment 'or large o uus 3 Solid Waste The activit '
and a- unts af solid waste dischary,ed during he tr ; m t i t,., period are summarized in Table 14 Alt solid waste naterials were packaged and shi; ped, along with mdic- t , ee waste generated in ethcr departments, by the afet * !. i C The Safety o(( ice C o n t. r a c t s [Or radioactive mte di s;.nsal services
.3 sol;ct w ste disposal was made form Taylor Hall during the
. e p C r *' 4 ' c period. A;,1)roximat ely otte cubic meter of id i o cs c .
e wdSte is in StoTage pendillg disposition of the
*acili ' di .mtling and decontamination. The dismantling mnd d<<
i
- an irat ion procen will remove these wastes along
%ith the t e n Oval rey'li rel e n t.S lbf Structures and equipment, and cl< mine r e qu i rerum t s- for surfacen and equipmeut 25 l l, --.s-
-.u-m.i.w 1991 I I Table B Sumn ary of i'e r s. anne l Radia t ion Expo .ure s i e P j t'b :*i- ' y 4 _v.A.+ r
- 3. j,tg l .&
4*6 E' I' ' 1 4,,.p i,., . , s' 8 1-A'-* A "-~4J a u .L ._ ,A. A w. A . 4 -' g ,, , j 4 , , 3*Mwy' i.!.12 Staff Student' '.' i s f '. o r s s e I.) I' (' -} N O (,( ) g ('9 S o( i (i [ l j [
",0.1 < J T ,lIJ P d V { O E ',A r e less than 0.1 2 0 1 0 . '. - O.J' O C o a Jc 1. 0 0 0
- 0. ;
O O O O 'S 1U 0 0 D 1.0+ 0 0 0 Table ? , Radiatic Exposure Groups
.2_rr.o..1_1 E x p n o i tr- p_o d ndivid'nd_i.n mrem
- 2
. . . -e g !b ,
'I b -.
S ' :t t f 81 360 S u d: : : :: 25 150
'isitors
* < 10 10 b b N I. I'ii . e .)t-t's ric ude che indiation doses durin the f u.1 nove i rmn Tayl or !!al . t o BRC Mdg 159, 26
l 'J 91
!able 10 Labo t a t a r Radiation Ixvels
[ {4_.1 O Lj - y 4r u1=a' t. 9g.__st m im_f heT
~
[_par' m. ) t'I r1Jy ,* p {) L u_ u.a. c_-vi m fontral fensole Area 2.16x10 $.dx10'2 19 ft from core axis o ft alwee pool 2.2?x10 , i' c e : :/ stim Area ' ' 43x10, 1 ft from core axis
- 1. ft above pool Above C o r e-- s
,. 1. 2 ; W I 0 ft from ccre nxis 16 f- above pool Table 11 L.ocratori :ontamination Levele i nc e !,n ,eLv e r a_.r e _ %m .en Ficors 28 dpm 61 dpm Surfaces 30 dpm 63 dpm Pool i'ater 5.3 pCi/l 30 pCi/l 21
1991 Table 12 Era t r~ ment al Sur veys
- *' - (
1 .01 1R/br a l re R ,, h r 2 .01 ~R.hr 01 .rR'br 3 .Cl 1E/hr 02 lrR/hr a .01 nR'br 11 n R /h r
. 01 "R/h r ,01 nRfb r 5 .01 TPfbr .01 aR/hr 15 pCi/1 17 pCi/1 e
s a
1941 Table 13 Monthly 'laseous Vaste Discharge , JARGON 41) MC ST:i EFFH VO Ll'M E ACTIViri HEL. CONC. : MPC . (HRS) (M') (pCl) ( p C i ,'CM ' ) x10 12 1 2 3 s
- 50 REl. EASES 7
d iu 11
, s A 6 Monthly Goreous Vaste Discharge (gas or particulate)
!imb ! sot pe Total Point o f i< e l e a c e Percent of Relea
- Concentration Maximum -
( Ci) (m3) (pCi/m') ( :-- 20%) Jan Feb Mar Apr May Jun NO REl. EASES Jul Aug Sep
?c t Nov DeC Total 29
1991 Table 14 Monthly Liquid Waste Discharge Month Isotope Total Point of Release Percent of
.- Release Concentration Maximum
( Ct) 3 (m ) (pC1/m3 ) (%) Jan - Feb - Mar - Apr - May - Jun - NO RELEASES _ Jul - Au g, - Sep -
, Oct -
*io v -
Dec + Table 15 Monthly Solid Vasto Disposal Month Isotope Total Form Remarks Release Chemical / Physical - (8C1) (ft') Jan - Feb - Mar - Apr - May - Jun - NO RELEASES Jul - Aug - Sep - Oct - NOV_ - Dec - 4 30 , l
)
I 1991 l
- 7. Laboratory inspee t ions !
i
, A. NRC ltupect'.ons l One license inspection for the R 92 license took place !
4turanc. the 1991 calender yetir. Inspection dater- were August . 1.~,4,21 and 22, 1991. Itapections of R 92 activities regarding rsdiation protection and transpottation were done during this inspection.
- Activities of the construction permit CpRR 123 were subject
o inspection once during the year. Inspection was July 25. No lolation of t he. docket 50-602 construction pecmit was identified ,
+n ing insp c t ions _
No NFC inspection took place during the calender year for te SNM 180 1,pecial riuclear material license. An artendment was ndo to the 8 % 190 license to alit.. possession of the reactor fuel elements at the Ealcones Research Center NETL Buildin6 15?-
"ran issuance of the docket 50 602 license (R 129 not available i n I W 1 ') the SN;t-156 license amendment will automatically expire.
B. TDH Inspections t The Tevan Department of Health Bureau of Radiation Control 4 in , >ec tions consist of a review of ac tivities and radioactive materials used at The University of Texas at Austin as authorized by 'IDH License ( LOO 4 8 5) . One inspection by the State of Texas _cok place during tb; calendar year on April 15 - 17, 1991, The inspection included the activities at the r>alconos Research Center icility No violations were noted. , i -w G - 4 J 31
1991 VI. public Service Act tvities A. Lectures and Presentations NETL f..culty and staff assist various organizations 4 th prograns inc ludiru; but not limited to: ' Nuclear Reactor Safety." ,
- . "Suclear Engine ering and Society," "Re search and Developtrent of Energy p.esourcts." and " Energy and the Environment."
The NETL staff provides tours as part of symposia designed to f.urillarize high school science teachers and student s with the theory and technology associated with energy resources today. Course credit is available to partleipants of some prograras one such program has been funded by various electric utility companies in Texas. A number of groups tour the laboratory each year. Several examples of summer programs that tour the f acility are the High School Science Teachers. Texas Energy Science Symposium and the k*orld of Engineering. B. Reactor racility Tours During 1991, no tours were held at Taylor Hall facilitien, All tours were at the Nuclear Engineering Teaching Laboratory at the Balcones Research Center. At the Balcones Research Center 29 with 570 people were given a tour of laboratory areas. Another 11G5 visitors In groups less than 10 also visited the BRC facility, c pecial activities have also been provided in the efforts to recruit rtinority students into the engineering fields. Students from several local high schools and students from several non engineering related college courses visited the facility.
%rerous college engineering related classes and several student engineering organizations also toured the facility.
Safety pe rsor.nol such as Austin Fire Department, UT police Department, t'T Safety office and the Texas Department of Health also visited the facility to remain familiar with the laboratory and eme rger.cy response procedures unique to the facility. C. Fuel Transfer Cask Loan A three element transfer cask was obtained as part of the fuel ele:wnt acquisition from the Northrup Corporation. The donated cask is designed for standard elements of TRICA fuel and
.is to be available for loan to other university reactor programs.
A container to ship the empty cask is Charges for the cask use will apply only to shipme,also available. nt costs. 32
1991 V11. Research Activities The staff and users of the Nuclear Engineering Teaching Laboratory perform research, as both sponsored and non sponsored projects, in several dif ferent areas. Equipaent and personnel are
. provided by the laboratory to supplement the research efforts of facility uters, that include students, faculty, and others. The following section lists research projects active during the calendar year. Major research funding or grants are presented in Table 1+; for users of the facility.
A. Fuel Assistance Sponsor: l' S . Department of Energy _ Pe r s orene l : Bernard W, Wehring Thomas L. Bauer The U,S. Departnent of Energy has provided research support by prvelding reactar fuel cycle mistance for the currently operating reactor core at The University of Texas at Austin TRICA reactor. B. Texas Energy Science Symposium Sponsor: Texas Atomic Energy Research Foundation Personnel: Dale Klein Orlan ih:rs . Texas Utilities Electric Company The Texas Atomic Energy Foundation has sponsored a symposium for outstanding high school science students for over 25 years. The program is inter <ded to encourage students to pursue careers in the sciences or engineering. Yearly attendance for the 4 day synposium consists of about 250 students and 150 high school science teachers. C. Selenium and Other Metals in Fish Tissues Sponsor- Department of Parks and Wildlife. State of Texas . Personnel: T.L Bauer F.Y. Iskander
!!ssue from muscle and liver of fish samples from several Texas lakes are analyzed for several elements known to be toxic.
4 Elements of tnterest are selenium, arsenic, mercury and ninc. This neasurement is pet of an environmental program for the State to examine the conditionu of waters subject to certain types of power plant or industrial effluent releases. 33
1991 Table 16 Re . at ch Futniing
. ::e par n : -
of Energy fuel /wsistance P r - <,r mr - -
':ew '!uc lear Enginee r ing, Teaching Laborat ory (includes D5D for e<lsting facility) 5,860 '00 Te<as Parks md Wildlif. D< p a r t:re n t 3/31 '<0 iselenium 5 o the r :te t a's ) 10,143 s<31 "' (Selenium !. other metals) 10,143 Ta as Atzanced Technology Prograin
- v eloprtent of a Cold ';eutron Source 1/1,90 12/21/91 207,000 Un ee ;ite r actor Sharing. DOE o-1'89 - 2/2B 92 f 5,950 Univet.,.*, ,
Instru.u ntation i'ro gr am , DOE 9/1/90 B/31/91 iPhase 1) 32 CO Unizersitj :nstru:rentation Program, DOE 1/1 G1 8/31/92 (Phase II) 6,290 Ur.tversity Nuclear Enginee rit:g Research, DOE 5tudy of !;eutron Focusing at the Texas Zeld hutron Source , 4/15/92 - 4/14/93 98,179
" 3. ':uc le a r R e gul a t o r.v Cotta'. s s ion -.
\n r,Rert System to E r !:anc e Software
'e l i abi ! i t y , 0/30/91 - 9/29/93 99,998 4
'4
1991 D. Rare Earth Elements in Coelogical Samples
. Sponsor: Department of Geology Personnel: F.Y. Iskander . T.L. Bauer Several geological samples including duplicates and several sources of standards are being examined by Instrumental Neutron Activation Analysis. The p roj ec t is to determine the Lest procedures and applicable methods for the measurement of rare earths in specific geologic samples.
E. CR-39 Track Detectors for Fast Neutron Microdositutry -- Sponsor: College of Engineering Personnel: B 1 Wehring Jong-Youl Kim The goal of this research is to provide the information and develop the techniques which are required to use the solid state-nuclear track detector CR 39 for high LET microdosimetry of fast neutrons. Central to this goal is the determination of factors which convert track size distributions to absolute high-LET (or lineal energy) distributions. These conversion factors will be calculated. veritied experimentally, and tabulated. In addition, improvoments will be made in track readout and analysis using a computerized Image analysis system, if fully developed, microdosinetry using Cr 39 track detectors would-be state of-the-art for fast neutron personnel dosimetry around fission reactors, fusion reactors, and charged particle accelerators as well as for in vivo microdosimetric measurenents in research and medical - applications. F. Develepaent of a Cold Neutron Source _at The University of Texas Nuclear Reactor Sponsor: Texas Advanced Technology Program Personnel: B A Wehring Kenan Unlu Takashi Emoto A cold neutron source has been designed and constructed for une with the UT TRIGA nuclear reactor, The Texas Cold Neutron Source consists of a cooled neutron moderator to lower the energies of the neutrons (increase their wavelengths) and neutron guides to transport the neutrons from the reactor. A cryogenic refrigerator connected to a 3-meter long neon heat pipe maintains 80 mL of
~k mesitylene moderator at about 30K e neutron guido system contains six l meter long elements, coated with Ni 58, and curved to a radius of 300 m. A source of cold neutrons will enhance the 35 ,
l L .
1991 ne of the UT reactor for material research and basic physics
- measurements, and would greatly increase the utility of the new reactor facility
. G Radiological Assessitent of Low Level Vaste Site Sponsor: Texas Low Level Waste Disposal Authority Personnel: Nolan E. Hertel Randall Charbeneau A performance assesstent of the proposed site for Texas low level aste disposal is being done. Radiation exposure pathways of significance are being defined. Modeling of the pathways will assess the envircratental irtpact of the disposal site. _
H. Phantens and Dosimetry Sponsor: Department of Mechanical Engineering Personnel: Nolan E. Hertel Phantoms, sour:es -and geometries applied in laboratory calibrations of personnel dosimetry differ from the international definitions and practical use of dosimeters on personnel, Monte Carlo simulations of irradiation conditions were performed to provide insito into the dosimeter resp e e.
- 1. An Ex;)ert System to Enhance Software Reliability Sponsor: U,5. Nuclear Regulatory Commission Personnel: T,L. Bauer B.W. Wehring -
Mohit Dikshit An expert system is being developed to provide functional software diversity, enhance on line analysis of unusual conditions, and integrate design knowledge with regulatory requirements. The methodology developed will be tested by using the expert system 4 with the digital cont.rol system of the UT research reactor. A computer workstation enhanced for operation with logic languages such as PROLOG or LISP will be connected to the output of the control console computer. From this study, features and paraiterars will be determined f or an expert system as an element of a network-communication system that supports complex reactor instrumentation functions. S / 36 L - -
1991 1 stud, of Neutran Facusing at the Texas Cold ' eut r,n Sou rc e
. Spto:s o r - U R I:e pa r t n ( nt of Energy Pe r S D t;ni'l : E C f 13 'l ~
b . 'n' . 'aPh!iog 3 O ri g A O u l E i f1! Carlos R'.os-Martine: A neutron focusine system md a P ro:rp t Camma-ray Activation Analy,!s ( FG .A ' facilit y w;11 be developed to be used with the T e y. a s Colj Neutron Sou!ce Eecent advances in the fabrication of
';1 coated silicon waf er , and ! 1 Ti n:ultilaye rs for supermirrors 6:e possible research into new systems for focusing neutrons. It is expected that using a focur.ing system with the newly developed
. Texas Cold :eutron Source, will provide higher neutron fluxes and lue bochround than i t andard thermal neut ron beams. Therefore the deteitien limits for neut ron absorption experin:ent s such as PGAA can be decreased. The use of focused cold neutrons for "Jeut ron Septh Profilinr, will also be investigated. 9 I, 1 b O i*
)i
- 1 : el<u. e : 3ps erm : Fe :oc n.v. i e Egre, arirr Te shine l o m 'i _4. t_ '. _r ;
Mat +e > Thesis 1 HJ. U pf ord,"l't ilic at ion of the Tnas Cold M ttan a urce for
':eut: n " attering Research" Masters Thesis, M,n t e at 'eience i n E n c. i ne e r i n e, %c! ar Engi.eering , The Univer,: of Te:as at Austin. .01 pp , M a ;, 1991.
? E.L. Taes ve " Phot.an Dose Equivalent in Ph.m : " " " " asters Thesis. Mister of Science in Engineering (Nucle-ir tngineering),
The in!"e.sity of Texas at Austin, li? pp. M.r, 1 el
- o. e p . t a and Pa; e: ,
.,,.o ou r :1. ae.irirm
..x=v. suer, and y .. u.a .
- i. im
. 3 ,,,eth s a ter ,
le /el faent of Health Physics Procedures at Pt se it h a t ars in A t " e :: tnt States Twent, Fourth Mid fear Topit al % ..t t y, of the Hea
- h Mcsict Socie*,, Raleigh, "( rth Caroli a 'm% '
l M.,
,43}
u ,,
. mo, . , t. ,c,ru, u ,
. .,..L. sauer, a n d y>... . . n3arinc
. . . - , . , xas ,oid, Stutran Scurce Applications of Cold 'eutron 3;re ro: < npy in lemi * " Biolon and Physics, A '4arkshop at t * .c 'ational
- itute of Standards and Technology Ga i t he t shu r., .% r y l a nd ,
une .. ,901 3 Joodar1, P C and B.*4. 'it h r i n g , " Radiation Train
's for ne: ger.cy N dieal Pe rsonnel ," Thirty- Sixth A: nual' tee' nt of the
.alth it n i c !. S o-: l e t y Yahsington, DC, Al,21-?0 lW1
. ic* m. an B.W. Wehrinca "Di' i ital Control for the UT TRIGA "
imer'a n Muclear Society Winter Meetin.g, San Franc!sco. . . Califarnia. Ntver.'ber 10-14, 1001. 5 Wehrine B.W., and T.L. Bauer, S t a t u s of The r iw r c i t / of It laS PeSParch PiaClor Prograni" A'Le f l C a n ,NUC l e a r S i n7 i + !. V Winter
'!c e t i ni; 'ain ElanCisFD, Ca}{[Ornia, ,S OV e ! !! h e l 10-14, 1701 Re:tel N.E , R.C Woodard, H.R Vega-Carrillo, ata B.W,o.
ri1 P.
.. fint b *1'} } e r P Nt' it S u r (-lT t ' n l S Ot D ] O .",(1, ' e f 3 I t; d Cf
.i r C t b!! I rkC a n )<' C e ll r SO(?ketf k I(Ier eetiI I s ii!i 4 l i
. I5CO, alifmrnia. 'n w:br: 10 . 's. , 1941.
Pe:t i SP and J C Mcdonald, " Calculate:1 %'c * '
^">s *
..'ics for D + "aderated Ci-202 ' urces " P _m i _t c _. a n.
_k _b'__ b
./_I_t I
. . _ g ,4 S E' 4 5*
- k. h 3 . o f) , ' . '( J nk' r. I s a u t r o !'. Ee l - tir.!:(- l DC f; e:re t e r s in Ter<< of : he A" 1 > ,t'* IW > s e f 4 .
"a l O !; * ...'ii iOD Iratortihn DOC i '? e ! r '. ji. 4 9 ' l 81 '
s
s 2 Po ll i r .! s .G F.J. Charbeneau, and N=E. Hertel, "Perfotmance Asse s ' nt of Not,al Release Scenarios at a Potential Texas Low-L.e ve l Rad'oac*ive Waste Disposal Site " (abstract). 1 ? 91 S umre r
. % e
- 1 3, of the Heal *h Physics Society, Washington, D.4' 'uly
?! t 1. LTalih lhin O Suppl . 2, SJ (1M1
'i Hert( 1. N t B.L. Hall. R.J. Charbeneau, and C.C Jollard "
Erti at m Sk/ shine Doses at the Baoundaries of Inw-:euel Radioactive Waste Disposal Facilities Due to Partiall:. Covered Wastes.' (abstract), 19'31 Sumate r Mee t ing o f t he Health Physics Scc le t
- Washington, D.C., July 21 26, 1991, Hea.ith PW Q.c s 60
%;'p l , 2 sd (1991).
11 le p- %irillo. H.R , C. Rios Martine7., L.L. Cuirino T c, r e e s , M.E. Hettel. md F Iskander, "Z1nalco and Sircaloy 4 Nue'. car -
'. h a r a - * *, Ttion,' .i P lpii n n i Nuc Ljhe m . 150, 1 c lM1; 12 'Je r a C a r r i l l o . H.R , N.E. Hertel, C.R. Martine:, and L.L
- u' .m Torres, " Application of Bonner SphereSpet rometer in ll.f, n' + '- Spcetrometry," Eevista Mexi m a & Phic a 37,
,<a ,
,,73
- 13. ;areia, "M C.R. Martiner, L.L. Torres, H.R. Vega, f.L Ri/ era, and F Y. Iskander, " Element al compostiot of minerals from several mines in Zacatecas state" VIII International yn posium or, Nuclear Chemis t ry. Radiochemis t ry and Radiation lem i s t ry Mexico, July 1990. (Abstract: Radiat Ph y '. Chem. ld
+ 1 2)- 2'S 1931 Int. J. Radiat. Appl. Ins t rum . Part C). 1.:. . Mar *.i*:, C.R L.L. Torres, H.R. Ve r,a , and F Y. Iskander, "4cnitor: r of im; uri t ie s in saline camples bv neturon aet!"a!.on analysis" VIII International Symposium on Nuclear
, Chaistr Radiochemistry and Radiation Chemistry, Mexico, July 19 % Abstract: Radiat. Phys. Chem. 3E (2): 261, 1991 - Int. J. =
Radiat Appl. Instrum., Part C).
- 15. Torres, L.h H.R Vega, C.R. Martinez, and F.Y. Iskander.
"Determiration of miners' content of mine tallines" VI!1 International Symposium on Nuclear Chemistry, Radiochemistry and Radi a t ion Chemis t rv. Mexico, July 1990. (Abstract Radiat Phys Chr:r E (2): 5 7 1991 - Int. J. Radiat. A;'p l . Iv trum. Part o3.
u
- 16. Je p . H.R CR Martinez,L L. Torres, and F.Y. !skandet,
' Su:le Tr characte ritation of zinalco and aircallo 4" VIII
- nterr.ational Symposium on Nuclear Chemistry, Radiochemistry and
% diation Chemistry, Mexico, July 1990. (Abstract: Radiat. Phys.
! Chem. V (2): 263, 1991 - Int. J. Radiat. Appl. Instrum., Part
. e U.
l' WGodard, P,C. nd B.W. Wehring," Radiation Training for m r- mica Pm_ma . Thr ~ sixt h An- - a
*- h e Meal *h Physics Society, M , 529, 1991.
39
1 'A C O d <1 r
- R ' I.. fa2OT, i} nd 6 , 'd , 'Ec h t' { ,6 g "$1e t hodol o g e {or 2 t '.' O '. 'ent of Hell'h j'}lySiCS p r O C e d u r e !, di R e s e it t~ c h R
- d C t C.e l .2 in s ,. t . . 3 , r s . '- '-
&i *' l e re n t c J_n. n <s < gr..a . R.P i n d _m!.<__pmu 4 .. -
i ~d
+ . [ .; f fi '. d l ~~ h'h {,) *]
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