ML20094N543
| ML20094N543 | |
| Person / Time | |
|---|---|
| Site: | 05000128 |
| Issue date: | 12/31/1991 |
| From: | Reece W TEXAS A&M UNIV., COLLEGE STATION, TX |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 92-228, ORO-4207-24, NUDOCS 9204070006 | |
| Download: ML20094N543 (17) | |
Text
. TEX A S E N GIN E ElllN G EX PElll M ENT STATIO N TEXAS A&M UNIVERSITY
'~
cotLEcE STATON. TEXAS UB413575 l']
I 2 April 1992 - -
NUCLEAR SCIENCE CENTER 409'845-7551 92-228 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555
Reference:
Docket No. 50-128 Facility License No. R-83
Subject:
Submittal of the NSCR Annual Report for the Period January 1, 1991 - December 31, 1991 Gentlemen:
In accordance with the reporting requirements of Technical Specification 6.6.1 for the Nucl(.ar Science Center Reactor, Texas Engineering Experiment Station, Texas A&M University System, we hereby submit three copies of our annual report for the period of January 1, 1991 - December 31, 1991.
l Sing rely, Warren D. Reece &
Director l
WDR/ym Enclosures l
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11uclear Science Center ORO-4207-24
%enty Eighth Annual Report April 1, 1992 Caleridar Year 1991 Page 1 of 15 I. I!1TRODUCTIO!1 The fluclear Science Cent.er (11SC) is operated by the Texas Engineering Experiment Station (TEES) as a service to the Texas A&ft University System (TAMU) and the State of Texas. The fluclear Science Center reactor and laboratories are available to students, researchers and faculty from Texas A&M University, other colleges and universities, government agencies, and private industry.
The 11uclear Science Center is comprised of a 1 mega-watt TRIGA reactor operating under license by the U. S. Iluclear Regulatory Commission (11RC): license R-83 currently extends _
through March, 2003. The nuclear fuel for the reactor is provided to TEES by the U. S. Department of Energy (DOE) under contract #DE-AC05-76ERO4207 (formerly EY-76-C-05-4207).
This report is prepared by the staff of the NSC in l
accordance with the requirements of the reactor Technical Specifications, US DOE Contracts and 10 CFR50.59. The report covers the period from January 1, 1991 through December 31, 1991.
II. REACTOR USE The 11SC reactor operated for 2574 hours0.0298 days <br />0.715 hours <br />0.00426 weeks <br />9.79407e-4 months <br /> in 1991 for a total integrated pover of 101.9 MW-days. During this period, 723 requests for reactor services were fulfilled. These requests are classified in four groups: Academic Use - services for primary, /
secondary and higher education programs, Internal Research -
service to TAMU system researchers, Research Contracts - access -
provided to other colleges, universities or private firms for -
research, and Commercial Use - requests by private firms for isotopes or reactor byoroducts used in commercial activities.
A. Agademic Use The reactor was used by faculty and staff from 3 departments at Texas A&M University. In addition, faculty and students from 12 other educational institutions used the facilities. Also 3,523 visitors were provided escorted tours during 1991. The following summary is provided:
TAMU Animal Science Department Faculty: Dr. Ellis tat 10 Chemistry Department Faculty: Dr. Kolar McClennan Community College - Waco, Texas Faculty: Mr. D. Tatum, Instructor of Physics Miami University - Oxford, Ohto Faculty: Dr. K. Crowley
I' .
, Nuclear Science ~ Center' ORO-4207-24
. : Twenty-Ejghth Annual' Report April 1, 1992 Calendar-Year 1991 ~Page 2 of 15 e
Southern Methodist University - Dallas, Texas Faculty: Dr. S. Kelley l Sul Ross State University - Alpine, Texas Faculty: Dr. D. Nelson Texas Gtate Technical Institute - Waco, Texas Faculty: Mr. R. Wheet, Instructor University of Houston - Houston, Texas Faculty: J. Liu University of. Illinois - Chicago, Illinois Student: M. Flower Universit'y of New Hampshire - Durham, New Hampshire Faculty: A. Conners University of Oklahoma - Norman, Oklahoma Faculty: Dr. B. Weaver University-Southwestern Louisiana - Lafayette, Louisiana Faculty - Dr. J. Meriwether
. University of Texas - Austin, Texas Faculty: Dr. F.-Iskander-
-University of Texas - El Paso, Texas
-Faculty: ~ Mr. E. Anthony Groups Receiving Pducational Tours Middle. Schools - 3 High. Schools - 26 Community Colleges University / College - 3 Society / Civic Groups - 6 B. Internal Research l'
I Research was performed at the NSC by: personnel from the
.TAMU System-during 1991. The following summary is provided:
Animal Science Center.
Faculty: 'Dr. W.C. Ellis,-Professor '
Anthropology Department .
Faculty: Dr. D.B. Dickson, Professor Center for Chemical Characterization and Analysis (CCCA)
Staff: Dr. E. Schweikert, Professor Chemistry Department l
Faculty: Dr. M.W. Row, Professor l
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4 fluclear Science Center ORO-4207-24
' Twenty-Eighth Annual Report April 1, 1992 Calendar Year 1991 Page 3 of 15 Geology Department Faculty: Dr. T. Tieh, Professor llorticulture Science Department Faculty: Dr. C.F. Gonzalez, Associate Professor 11uclear Engineering Department Faculty: Dr. J.W. Poston, Professor Oceanography Department Faculty: Dr. P. Boothe, Besearch Scientist Physics Department _
Faculty: Dr. J.A. 14cI n ty re , Professor Range Science Faculty: Dr. R. Knight Veterinary Physiology and Pharmacology Faculty: Dr. D. Hightower, Professor C. Research Contracts Research was performed using t1SC reactor facilities by other academic institutions and private firms. The following summary is provided:
AAE/BSC Traders - Globe, Arizona Principal: 14r . D. Williams
- 14. D . Anderson Hospital - Houston, Texas Principal: Dr. J. Cundiff -
D. Commercial Use A total of 17 private firms used 11SC reactor services for commercial activities.
~.AE/BSC Traders - Globe, Arizona Principal: 14r . D. Williams Brown and Associates - College Station, Texas Principal: 14 r . J. Fares Gulf 11uclear - Houston, Texas Principal: 14r . 14 . Skinner Kearfott Guidance and 11avigation - Little Falls, 11. J .
Principal: fir. L. Breen tiethodist Hospital - iloueton, Texas Principal: Dr. W. Cole
J.luclear Science Center ORO-4207-24'
. - Twenty-Eighth Annual-Report April 1, 1992 )
, Calendar Year 1991 Page 4 of 15 Poretics Corporation - Bryan, Texas Principal: Mr. E. Ilubbard Racon - Tyler, Texas Principal: Mr. R. Heine ,
l R/A Services - Odessa, Texas Principal: Mr. D. Ilicks Shell Development Company - Houston,-Texas l
, Principals W. Stringfellow I Pro-Technics II, Inc. - llouston, Texas a Principal: Mr. M. Brewer Texas Instruments - Dallas, Texas Principal: Mr. C. Blackburn 4
Tracerco, Inc. - Houston, Texas Principal: Mr. R. Gilman ,
i- TRW-EDS - Redondo Beach, California Principal: Mr. D. Randall Tru-Tec - LaPorte, Texas Principal: Mr. C. Winfield l
III. FACILITY AND PROCEDURE CHANGES In_accordance with the requirements of 10CFR50.59, changes to the facility and procedures were reviewed and documented.
During 1991;no changes were performed that required additional -
safety analysis or changes to the Technical Specifications. The following changes were implemented as not representing an_
unreviewed safety question, and not increasing the probability of-an accident previously analyzed in the Safety Analysis Report.
A. Facility _ Modifications Addition of a radioactive gas holdup tank.
Upgraded fuel temperature chart recorder.
Upgraded Facility Air-Monitor chart recorder.
Upgraded Reactor Power chart recorder.
Replace Post Accident' Fuel Temperature-Meter.
B. Procedure Changes h -Eleven. Standard Operating Procedures were changed.
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,I1uclear Science Center ORO-4207-24 Twenty-Eighth Annual Report April 1, 1992 Ca
_lendar Year 1991 Page 5 of 15 IV. FACILITY MAIllTEllAllCE All required maintenance as set forth in the Technical Specifications was performed annually, semi-annually, or weekl1 as required. Pre-startup checklists are performed daily prior to reactor operation to assure reactor facility readiness.
V. TECH 11ICAL SPECIFICATIO!1 SURVEILLA!1CE ACTIVITIES The Technical Specification requirements for maintenance and curveillance were completed for all required channels as follows:
A. Calibrations Fuel F.lement Temperature Measuring Channel Linear Power Channel Log Power Channel High Power (Safety) Channels Facility Air Monitoring Channels Area Radiation Monitoring Channels B. Coppliance Testina Control rod worth, and time measurements were performed in January, 1991. Total rod worth was measured at $15.96; providing a shutdown margin of $3.02. The rod scram time is within the Technical Specification limit of 1.2 seconds. The maximum allowable pulse reactivity insertion is $2.09 for Core VIII-A as determined by a pulse test program. An adninistrative limit of
$1.90 is imposed for pulse operations.
The power level (linear) channel was calibrated by the calorimetric method on 1/2/91. The pulse measuring channel was calibrated on 2/21/91. Pulse operation parameters are verified semi-annually by pu]ning the reactor for comparison of pulse energy and fuel temperature to previous pulse operation values.
All Fuel elements were inspected in January 1991. Two fuel elements failed the transverse bend criteria for reinstallation. 11 0 fuel failures have occurred.
The reactivity worth for each experiment was measured or estimated before initially performing an experiment. The most reactive ($0.83) fixed experiment in the Thermal Column coupler with a 1/2 inch spacer.
11uclear Science Center ORO-4207-24
, Twenty-Eighth Annual Report April 1, 1992 Calendar Year 1991 Page 6 of 13 C. ((eadines s Review and._E_rgrgency P l an n i_tig A review of the tiSC security plan and emergency plan was conducted by the 1180 staf f on 2 /4 /91. The annual facility evacuation drill and staff emergency response was conducted on 4/30/91. Also, a review of the 11SC ALARA program was conducted by the 11SC staff on 2/4/91.
VI. REACTOR OPERATIO!1S A. Availability 11 umber of Days Reactor Operated - 240 Heactor Operation (MW-Days) - 101.9 11 umber of Hours at Steady State - 2574 Average 11 umber of Operating flours Per Week - 49.5 Total 11 umber of Pulses - 28 Total Pulse Reactivity Insertion - $46.45 11 umber of Irradiations - 723 Beam Port Experiment-llours - 308 Irradlation Cell Experiment-llours - 29 11 umber of Visitors - 3,523 B. Unscheduled Outages A total of 12 unscheduled shutdowns occurred during 1991.
The unscheduled shutdowns were caused by the following:
Loss of Facility Electrical Power - 8 occurrences Control Rod Drive Mechanism Faults - 4 occurrences C. j leportable Occurrences Reportable Occurrence 91-01, " Abnormal Degradation of Reactor Fuel", The annual Technical Specification Surveillance identi.fied 2 fuel assemblies with excessive transverse bend.
Reportab.Le Occurrence 91-02, " Violation of Technical Specification 3.5.1", The reactor was operated without the Facility Air Monitoring system in operation.
ipuclear' Science Center ORO-4207-24 Twenty-Eighth Annual Report April 1, 1992 Calendar Year 1991 Page 7 of 15
-VII.~ ADMINISTRATION The reporting structure and reactor organizational requirements are contained _in the Technical Specifications. The complete Nuclear Science Center Organization is identified in
- chart format on_ Figure 1.
VIII. IIEALTil PllYSICS SURVIELLANCES A dedicated Health Physica groun is maintained at the NSC reactor facility as an-integral part of the line organization.
Additional support is provided on request by the TAMU Radiological Safety Office.
A. Irradiation-Suppott Ilealth Physics monitoring and technical support provided both quality assurance and hazards reduction during the processing of 697 irradiation requests and shipping 369 shipments of radioactive material. Of these 93 shipments were sent to other locations on the Texas A&M campus.
B. Personnel Monitorino Radiation safety training was provided to 75 NSC employees and experimental personnel using the facilities. A new personnel dosimetry plan was implemented; radiation exposures to personnel in 1991 were below the limits set forth in 10CFR20.101. The maximum exposure received by any individual for the year was 460 mrem. A total of 3.6 man-rem was recorded for 1991. All employees at the Nuclear Science Center were changed to neutron
- badges-to reduce the potential for unrecorded exposure-.from neutrons sources at the USC.
During 1991, 3,523 persons visited the Nuclear Science Center. No detectable exposures were measured by film badges. -
Dosimetry results were provided by a NVLAP accredited supplier.
C; facility Monitoring Surveys of the Nuclear Science Center facilities are performed to assess radiological hazards to NSC workers. The radiation levels and sources of radioactive contamination are monitored; approximately 200 smear samplos are collected, analyzed and evaluated each month. Radioactive effluents and
- waste shipments were also monitored for isotopic content and activity; there were 41 planned relearas of radioactive liquid effluents totaling 1.71E+C l l '_ e r s .
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11uclear Science Center ORO-4207-24 Twenty-Eighth Annual Report April 1, 1992
! Calendar Year 1991 Page 8 of 15 Additionally, the isotopic material loading of the facility was reduced v'th the disposal of over 300 sources of unneeded radioactive material stored at the 11uclear Science Center between 1977 and 1989. In association with the reactor coolant demineraliter system maintenance, six barrels of resins, activated charcoal and waste was packaged and transferred to the Office of Radiological Safety for disposal.
D. Particulate Effluent Monitoring Radioactive particulate aro monitored at the base of the central exhaust stack and are summarized on a monthly basis. The annual average release rate was 4.92 E-14 uCi/cc. Total activity _.
release for 1991 was 3.28 E-4 Ci.
Month Exhaust Average Total Volume Concentration Release (cc) (uCi/cc) (Ci)
===== =========== ============ =====
January 6.31 E12 9.95 E-12 6.27 E-05 February 5.70 E12 1.63 E-16 9.29 E-10 March 6.31 E12 6.50 E-12 4.10 E-05 April 6.12 E12 9.68 E-13 5.92 E-06 May 6.31 E12 9.91 E-13 6.25 E-06 June 6.12 E12 2.25 E-12 1.37 E-05 July 6.31 E12 1.25 E-11 7.88 E-05 August 6.31 E12 1.71 E-11 1.07 E-04 September 6.12 E12 9.48 E-14 5.80 E-07 October 6.31 E12 1.43 E-13 9.02 E-07 Ilovember 6.12 E12 1.29 E-l2 7.89 E-06 December 6.31 E12 5.90 E-13 3.72 E-06 Total Central Exhaust Air Volume: 7.44 E13 (cc)
Central Exhaust Annual Average Release Rate: 4.92 E-14 uCi/cc Total Central Exhaust Annual Helease: 3.2P E-4 Ci
Nuclear Science Center ORO-4207-24
. ' Twenty-Eighth Annual Report April 1, 1992 Calendar Year 1991 Page 9 of 15 E. fgseous Effluents Monitoring Argon-41 is the major gaseous effluent produced and released at the Nuclear Science Center. This effluent is monitored at the central exhaust stack. Total Argon-41 release during 1991 was 12 curies at an annual release rate of 9.62 E-8 uCi/cc with no dilution factors applied. Release rates are also determined using the dilution factors for the release rate at the exclusion area boundary. The total amount released is determined from the undiluted release rate. These data are summarized below:
Month Exhaust Average Diluted Total '
Volume Release Rate Concentration Release (cc) (uCi/cc) (uCi/cc) (Ci)
===================================================
JANUARY 6.3]E12 8.2E-08 4.lE-10 5.2E-1 FEBRUARY 5.70E12 5.lE-08 2.6E-10 2.9E-1 MARCH 6.31E12 1.2E-07 6.0E-10 7.4E-1 .
APRlL 6.12E12 1.5E-07 7.5E-10 9.0E-1 MAY 6.31E12 7.9E-08 4.0E-10 5.0E-1 JUNE 6.12E12 1.7E-07 8.5E-10 1.lE+0 JULY 6.31E12 1.4E-07 7.0E-10 8.9E-1 AUGUST 6.31E12 9.5E-08 4.8E-10 6.0E-1 -
SEPTEMBER 6.12E12 3.9E-07 2.0E-09 2.4E+0 OCTOBER 6.31E12 4.0E-07 2.0E-09 2.5E+0 NOVEMBER 6.12E12 1.7E-07 8.5E-10 1.0E+0 DECEMBER 6.31E12 9.5E-08 4.0E-10 6.0E-1 Total Air Volume : 7.44E+13 cc Central Exhaust Average Release Rate: 7.9E-9 uCi/cc Total Ar-41 Activity Released : 12.0 Ci
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Nuclear Science Center ORO-4207-24
. ' Twenty-Eighth Annual'Heport April 1,-1992-Calendar' Year-1991 .
Page 10 of 15 F. -klauid~Eff1uents-Monitoring Radioactive liquid effluents are collected in liquid
_ holdup waste tanks prior to release from-the confines of the Nuclear S ience Center. Sample-activity concentrations and isotope identification was performed prior to each release.
There were 69 releases in 1991 totaling 1~.71E4 6 liters excluding dilutents from the Nuclear Science Center. The total radioactivity released for 1991 was 2.14E-1 Ci wi+f an average concentration of 3.19E-6 uC1/cc. Summaries of the radioisotopic data are presented below. Radioactivity concentrations for each isotope were below the limits specified in 10 CFR20, Appendix n Table II,, Column 2.
No of Measured MPC Activity l
Isotope Releases .qGi/cc uCi/cc Curies
============================================================
Co-60 20 4.8E-7 3E-5 8.86E-3 2E-3
^
Cr-51 8 2.8E-6 7.48E-4 Ir-192 2 1.4E-6 4E-5 5.90E-5 l Au-198 4 2.7E-5 SE-5 3.39E-3 E Mn-54. 30 8.3E-7 1E-4 8.88E-2 Ti-51 3 1.6Ea6 3E-5 1.24E-3 Ub-97 2 2.2E-7 9E-4 1.18E-3 Sb-124 -4 4.0E-7 2E-5 1.20E-3 Sc-46 48 2.2E-6 4E-5 1.07E-1 L Sr-85 1 4.8E-7 IE-4 1.45E-5 l
Zn-65 1 5.2E-7 1E-4 5.43E-6 I-124 2. 4.6E-7 3E-5 1.74E-3 Total Number of Releases : 69 Total. Liquid Volume: 1.7.1 E+6 liters (4.73 E+5 gallons)
Average Release Rate: 3.19E-6 uCi/cc Total Activity: 2.14 E-1 Curies
-IX . ENVIRONMENTAL MONITORING In: conjunction with representatives of the State of Texas Department of Health a quarterly environmental survey program was implemented. This program consists of TLD monitors located around the NSC site and the collection, analysis and evaluation p of soil, water,. vegetation and milk sampleo.
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Nuclear Science Center ORO-4207-24 Twenty-Eighth Annual Report April 1, 1992 Calendar Year 1991 Page 11 of 15 A. Site Boun_dgry Doserate The environmental survey program measures the integrated radiation exposures at the exclusion area boundaries. These measurements are made for periods of approximately 90 days using fluoride chips in glass enc apsulated bulbs. The dosimeters are provided and processed by Texas Department of Health, Bureau of Radiation Control, Division of Environmental Programs. The state background monitor (survey point 14A) 39 located at a point 5.25 miles west-southwest of the USC facility and generally at right angles to the prevailing southeasterly winds.
Exposure Annual _
Rate Exposure Site p Location imR/182__ days) 1.9 9 0 _( m ill.
2 300 ft. W of reactor 41.4 83 building, near fence corner 250 3 250 ft WSW of reactor 124.2 huilding, on SW chain link fence 4 200 ft NW of reactor building, 51.3 103 on chain link fence, near butane tank 5 22S ft NE of reactor building, 45.9 92 on fence N of driveway 6 300 ft NME reactor building, 102.6 206 -
near fence corner 10 190 ft SE of reactor building, 31.3 63 on SE chain link fence ,
11 300 ft E of reactor building, 31.9 64 near fence corner 12 375 ft. NE of reactor building, 87.0 349 near source building 13 320 ft. NE of reactor building, 76.8 154 near waste storage shed 14A 5.25 miles WSW of reactor 31.6 64 building, at FM 60 bridge over Brar.os River
. Nuclear Science Center ORO-4207-24 '
. Twenty-Eighth Annual Report April 1, 1992
- Calendar Year 1991 Page 12 of 15 The highest exposure point was determined to_be at Site
- 12 (349 mR/yr) which-is on the NSC Site Boundary fence northeast of the reactor building-near the TAMU Office of Radio 3ogical Safety, Waste Storage Building. The closest off-site point of
' extended occupancy.is located just beyond the Site Boundary fence directly behind.the Site #10 monitoring location; those occupants continue to received-only back"round exposure.
B. Environmental Survey Samples
_-The environmental survey samples were collected in I accordance with the-. schedules of the cooperative surveillance program between the Texas State Department of llcalth and the ,
Texas-A&M University. These samples were analyzed for gross gamma and beta activities and isotope identification. Data from
__these samples reflect the continued use of retention facilities
~
and. sample analysis for laboratory effluents prior-to their release.
Summaries of the environmental survey program for 1991 are ,
presented in the four tables below for total gamma or. beta activity as reported to the NSC or as determined by the NSC when data from the state was unavailable.
Vegetation Samples -
1991 Sample Concentration Qtr Location fuCi/nal)
Ig1 TAMU dairy < MDA-2nd. TAMU dairy < MDA 3rd TAMU dairy < MDA 4th TAMU dairy < MDA Water Sainples -
_1991 Sample Concentration Qtr Location . (uC1/ml) '
lat Brazos River 8.49E-7 lat - White Creek 3.18E-7 2nd Brazos River < MDA 2nd NSC Creek 3.08E-7 3rd- Brazos River < MDA 3rd NSC Creek 9.18E-7 4th Brazos River < MDA 4th NSC Creek < MDA
}
Jiuc1' ear = Science Center ORO-4207 -
-Twenty-Eighth Annual Report April 1, 1992 Calendar Year 1991 Page 13 of 15 Milk Samples -
1991- Sample Concentration Otr Locatiott (uCilaal) 1 s_t; TAMU dairy < MDA 2nd TAMU dairy 1.76E-6 3rd TAMU dairy < MDA 4th TAMU dairy < MDA Soil Samples -
1991 Sample Concentration Qt_r Locatiort (rCilml) ist NSC Soil < MDA 2nd NSC Soil 1.59E-4 3rd NSC Soil < MDA 4th- NSC Soil 4.68E-5 X. RADIOACTIVE WASTE' A. Solid Waste Approximately 79. lag of dry solid waste material was packaged in plastic bags for disposal during 1991. These plastic bags contained laboratory glassware, irradiation containers, decontamination materials, and expendable protective clothing (shoo covers, gloves). This material was transferred to the Texas A&M University Office of Radiological Safety, Texas License No. 6-448 for disposal. The radioisotopea identified in this waste are identified as follows:
Solid Waste -
- !sotopo. Activity fuCil Cc-60 -460.96 Co-57 14.9 Ce-141 29.4 Mn-54 1.9 Zr-65 49.0 11 f- 181 - 2.6 Ce-139 2.5 Ag-110m 307.32 Ir-192 90.2 Ce-144 139.5 Sb-124 11.87 Zn-65 355.75 Mb-95 83.26 Total Activity: 1.5 E-3 Ci
.!1uelear Science Conter ORO-4207-24 Twenty-Eighth Annual Report April 1, 1992 Calendar Year 1991 Page 14 of 15 During 1991 the reactor coolant deionizer resins were replaced. The waste resins were transferred to the Texas A&M University Office of Radiological Safety for disposal. The isotopic content in these barrels of waste resins is listed below:
Resin Waste -
is o_t_gne Actiy_1tylug_il Mn-54 2850.0 Co-60 1480.3 Co-58 324.9 Sc-46 1414.0 _
Co-57 120.8 Zn-65 300.1 U-235 0.9 Cr-51 372.8 Total Volume: 935 gallons Total Activity: 6.86E-02 uCi XI. Rcactor Safety Board A. Membership Chairman: F. Jennings, Director, Office of University Research ,
Voting Membets:
Dr. T. Parish Professor, 11ucleer Engineering -
Dr. R. Kenefick, Professor, Physics Dr. R. Koppa, Professor, Industr'al t Engineering
- Dr. E.L. Morris, Professor, Veterinary Medicine Dr. E.A. Schweikert, Professor, Chemistry Ex-Officio Members:
D.E. Feltz, Director, lluclear Science Center (January 1, 1991 - September 1, 1991)
W.D. Reece, Director, 11uclear Science Center (Septemb?r 1, 1991 - December 31, 1991 Dr. M.E. McLain, University Radiological Safety Officer J.W. Pos ton , 11ea d , fluclear Engineering M.P. Brown, Senior Health Physicist, 11uclear Science Center
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,11uclear Science Center ORO-4207-24 Twenty-Eighth-Annual' Report April 1, 1992 Calendar Year 1991- l' age 15 of 15 D. /Agf.ivities i l
l The Reactor Safety Board (RSB) met on February 8, 1991 and i September 24,1991. The RSB conducted audits of 11SC activities ;
on-January 31,. 1991, April 23, 1991, July 18, 1991, and August 8, 1991. '
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