ML20245L749

Progress Rept 1988-89 Univ of Missouri-Rolla,Nuclear Reactor Facility

ML20245L749
Person / Time
Site:	University of Missouri-Rolla
Issue date:	03/31/1989
From:	Straka M MISSOURI, UNIV. OF, ROLLA, MO
To:	NRC
References
NUDOCS 8905080124
Download: ML20245L749 (28)

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I Progress Report I 1988-89 l University of Missouri-Rolla g

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4 PROGRESS REPORT FOR THE UNIVERSITY OF MISSOURI-ROLLA NUCLEAR REACTOR FACILITY APRIL 1, 1988 to MARCH 31, 1989 i

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.- . .. . 1 Submitted to The U.S. Nuclear Regulatory Commission and The University of Missouri-Rolla Albert E. Bolon, Director Milan Straka Manager Nuclear Reactor Facility University of Missouri-Rolla Rolla Missouri 65401 1

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Summary During the 1988-89 reporting period the University of Missouri-Rolla Reactor was in operation for 317 hours0.00367 days <br />0.0881 hours <br />5.241402e-4 weeks <br />1.206185e-4 months <br />. The major part of this 1I time. 72%. was used f or class instruction and training purposes.

About 19% of the reactor time was used for research and irradiation service and 9% was needed'for maintenance runs.

There were about 40 undergraduate and graduate students enrolled for course work at the reactor. This committed the facility to 44 student-hours of classes. The reactor was visited by about 2300 visitors during the past year. The Reactor Sharing Program grew considerably this year' bec^oming a highly' visible program f or both the facility and the campus. There were 302.off-campus participants involved in various reactor projects. The facility was reimbursed I for this program from a grant awarded by the U.S. Department of Energy.

The reactor produced about 6 Mk1 hours of energy using 0.3 g of uranium. A total of 148 samples have been irradiated at the reactor with most of them being analyzed in the Reactor Counting Laboratory.

I Irradiation of samples prepared f or studies on cancer tumors continued through this reporting period.

Training for reactor operator trainees of a midwest utility was conducted for one week during this reportinL period. The reimbursement helped to defray facility costs and also helped to improve research and instructional capabilities.

The area of trace element analysis using neutron activation has been expanded to ihclude , for example, ore samples analyzed for a i

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il mining company and samples of a new luminescent paint. A contact with an industrial lab has been established for the purpose of

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determining the efficiency of their new filter product. An alpha- ]

l spectrometer has been acquired. The safety study, funded by the U.S. j Department of Energy, which was prepared f or the mandated conversion I

of the UMR Reactor to low enriched uranium fuel has been completed and its results submitted to the U.S. Nuclear Regulatory Commission. l l

At this time, the fabrication date of the new fuel is not yet known.  !

The Weldon Springs Project in which the collection efficiency of man-made aerosol scavengers was measured has been completed. Some very promising' results wer'e'~ob~tained which are reported in the Journal of the American Association f or Aerosol Research. A follow-up project in cooperation with the Laboratory for Fine Particles of the UMR Graduate Center f or Cloud Physics is being prepared. An invitation has been received to present a paper on the use of the UMR Reactor facility in engineering education and training at a national meeting of the American Nuclear Society.

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Summarv 1 List' of Tables iv I. Introduction........................................ 1 .

II. Reactor Staff and Personnel................. .... 2 'I 1 1

A. Reactor Staff......... ........ .... .......... 2 'l B. Licensed Operators..................... .. .. . 2 l

t C. Radiation Safety Committee..................... 3 l 1

D. Health Physics................................. 4 III. Improvements........................................ 5 IV. Reactor Operations.................................. 13 Core Data...................................... 13 U. Public Relations............................ ....... 14 UI. Educational Utilization............................. 15 UII. Reactor Health Physics Activities................... 17 UIII. P1ans............................................... 20 I <

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IV LIST OF TABLES '

1. UMRR Core Configuration and Rack Storage Form............... 6

2. Facility Use Other Than the Reactor......................... 7

3. Reactor Utilization......................................... 7 l

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4. Rundowns.................................................... 8 '

5. Scrams...................................................... 9

6. Maintenance................................................. 10

7. Core Loading and Unloading.................................. 12

8. Core Technical Data......................................... 13

9. Public Relations Program.................................... 14

10. Reactor Sharing Program..................................... 16 1

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1 I I. Introduction This progress report is prepared in accordance with the requirements of the Nuclear Regulatory Commission 10 CFR 50.71 concerning the operation of the University of Missouri-Rolla Nuclear Reactor Facility (License R-79).

The reactor, a pool type, is operated as a university facility

'available to the f aculty and students of the various departments of the university for their educational and research programs. Several other universities and colleges have made use of the f acility during

this repor. ting period. The facility.is also made available for the purposetof.. training reactor personnel for the nuclear industry and electric utilities. Trace element analysis using neutron activation is also provided at the facility.

The reactor staff has continued to review the operation of the Reactor Facility in an ef f ort to improve the saf ety and ef ficiency of

=itstoperation:.and to provide conditions conducive to its utilization by students and f aculty from this and other universities. The following sections of this report are intended to provide a brief  !

description of the various aspects of the operation of the facility,

.I including its utilization f or education and research.

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1 II. Reactor Staff and Personnel i l

i A. Reactor Staff I Name Title Albert E. Bolon Director Milan Straka Reactor Manager Carl Barton Senior Electronic Technician Juls Williams Lab Mechanic Francis Jones Reactor Maintenance Engineer Linda Pierce Senior Secretary B. Licensed Orerators Name License Albert E. Bolon Senior Operator Carl Barton Senior Operator l

j Milan Straka Senior Operator Francis Jones Senior Operator I

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3 C. Radiation Safety Committee Name Department Dr. Nord L. Gale (chairman ) Life Sciences Mr. Ray Bono (secretary, ex officio) Environmental Health and

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Risk Management Dr. Ernst Bolter Geology and Geophysics Dr. Oliver K. Manuel Chemistry Dr. Albert E. Bolon Reactor Director Dr. Nick Tsoulfanidis Radiation Safety Officer i l

Dr . Edward Hale -

Physics Dr . Milan Straka (ex of ficio , non-voting) Reactor Manager Dr. Arvind Kumar i Nuclear Engineering i

This committee is required to meet at,three month intervals. l However, in practice the frequency of the meetings is usually greater.

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l D. Health Physics Name Title I Dr. Nick Tsou,1.fanidis Radiation Safety Officer

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Mr. Ray Bono Director. Environmental Health & Risk Management j Mr .. William Heineken1) Health Physics Tech.

Miss Kathy Stone e) Student Asst. CHP) l Mr. Dan Szatkowski3) Student Asst. (HP)

Miss Danika Jackson *) Student Asst. (HP)

1) terminated effective 1/7/89

2) employed effective 10/26/88

3) employed effective 1/18/89 I 4) employed effective 1/16/89 I

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III. Improvements I A continuous effort to enhance availability and reliaoilitv of the facility is being undertaken by the reactor staff. Durinr this reporting period the following improvements have been made:  !

1) An alpha detector svstem has been purchased. This system also includes associated electronics and a vacuum pump.

2) Individual magnet current meters have been installed. This makes switching during pre-startup testing, which was failure prone, unnecessary.

3) An IBM PS/2 has been acquired for the computer-based gamma-spectroscopy station. This will shorten the analvsis run time by at least a factor of three, hence enabling a larger sample throughput or more det ailed analyses .

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Table 1. UMRR Core Configuration and knck Storage Form 11-DATE 31 March. 1989 LOADING NUMBER 67T or 67W*

R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 1  ! l l l l l l  ! !HF-1: !F-13!F-20lF-22!  ! j i

RACK STORAGE FACILITY

! l l l l  !  !  ! 1 IF-2 lF-5 !F-3 !F-18tF-21!

R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 i  ! l l  !  !  !  !

I A l  !  :  : t l l l  !  ! KEY TO PREFIXES l  ! l l  !  !  ! -l  !  !

B  !  !  !  ! !S  !  !  !  !  ! F - Standard Elements

!  !  !  !  !  ! l  !  !  ! C - Control Elements C !  ! !HR-1!F-14 F-1 !C-4 :  !  ! l HF - Half Front Element

I  !  !  !  !  !  !  !  ! HR - Half Rear Element D !  ! lF-8 tC-1 tF-16!F-9 !F-4 !F-10!  ! S - Source Holder i  !  !  !  !  !  !  !  !

E  ! lF-6 !C-2 lF-19lC-3 lF-12tF-11! l

!  !  !  !  !  !  !  ! l l F  !  ! !BRT !F-17!F-15 F-7 !  !  !  !

1 2 3 4 5 6 7 8 9 BRIDGE SIDE UMRR CORE STATUS Other BRT - Bare Rabbit Tube CRT - Cadmium Rabbit Tot.e**

I *T designates the thermal column-reflected mode, and W designates the water-reflected mode.

• • Has been temporarily removed for rer; air.

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FACILITY USE OTHER THAN THE REACTOR l

Facility Hours Bare Rabbit Tube 25 Beam Port 0 Reactor Console 292 Total 317 i

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REACTOR UTILIZATION Reactor use 317 hr Research and irradiation runs 59 hr

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Instruction runs 198 hr Maintenance runs 29 hr Training 31 hr

. Time at power. .. 166 hr Heat generated 6121 kw-hr Total number of samples 148 Sample hours 264.5 hr l U-235 burned 0.26 s U-235 burned and converted 0.32 g l 1 i

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Table 4 RUNDOWNS Date Cause 04/05/88 (120X Demand) Spike due to upscaling on picoammeter.

ACTION: Student operator given further instruction.

04/22/88 (120X Demand) 'Down scaled picoammeter too soon.

ACTION: Cautioned student.

10/26/88 (120X Demand) While removing stringer from core.

ACTION: Cautioned assistant lab instructor on removing )

stringer from core. J 02/18/89 (120% Demand) Spike due to changing scales on *I picoammeter. Senior Operator at controls at time of spike.

03/08/89' (<15 sec rundown ) Placing void tube in position D2. l ACTION:

Void tube handlers cautioned.

03/08/89 (<15 sec rundown) Moving void tube to B2. l' ACTION: Shuting down Reactor for further moves.

03/20/89 '

(120X Demand) Switching scales on picoammeter.

ACTION: Student cautioned on switching scales.

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SCRAMS Date Cauce 10/20/88 150% Full Power Scram period <5 sec. No apparent reason. Believed to have been caused by power surge.

10/27/88 Reactor scram with no console indications. Distant lightning and thunder could have caused power surge. l

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I 11/03/88 Reactor scram. Apparent spurious signal. Noise from test switch. Switches in Log N Amplifier repaired.

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MAINTENANCE (Other than asscciated with Rundown. Scrams, and Semi-Annuals) l Date Time Cause 04/04/88 1230 Cd covered rabbit tube removed from core.

1427 Cd covered rabbit tube replaced in core.

04/05/88 1420 Cd covered rabbit tube removed from core.

04/06/88 1348 Cd covered rabbit tube replaced in core.

05/23/88 1400 Magnets No. 1, 2 and 3 removed.

Shrouds also removed.

Cd covered and bare rabbi t tubes removed.

(These were removed for control rod inspection.)

05/24/88 0853 Control rod No. 3 removed for inspection.

I 0910 0915 0926 Control rod No. 3 replaced.

Control rod No. I removed for Control rod No. I replaced.

inspection.

0927 Control rod No. 2 removed for inspection.

0938 Control rod No. 2 replaced.

1400 Magnet shrouds and magnets 1, 2 and 3 replaced.

07/27/68 0930 Magnet No. 3 bad and removed.

07/29/88 1445 Magnet No. 3 replaced and checked f or operation .

08/02/88 1445 Magnet No. 3 removed.

08/04/88 1110 Magnet No. 3 replaced and checked for operation.

08/08/88 1145 Magnet No. 3 removed.

08/12/88 1130 Magnet No. 3 replaced and checked for operation.

12/05/88 1343 Vent Fan No. 3 malfunctioned.

Uent Fan removed. Uent covered.

01/10/89 1300 Magnet No. 3 removed.

1400 Spare magnet replaced and checked for operation.

02/21/89 0925 Removed magnet No. 3.

1015 Spare magnet replaced and checked for operation.

02/28/89 1215 Magnet No. 1 bad.

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i 11 03/02/89 1148 Replaced magnet No. I and checked for operation.

1300 Magnet No. I still bad.

03/08/89 0845 Magnet No. I replaced and checked for operation.

1645 Magnet No. I removed.

03/10/89 1000 Magnet No. 1 replaced and checked for operation.

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12 Table 7.

CORE LOADING AND UNLOADING Date 5/20/88 Unload (67W to suberit) for control rod inspection.

5/25/88 Reload (subcrit to 67W) to return to previous configuration.

9/09/88 Unload (67W to subcrit) Suberitical multiplication calculation.

9/09/88 Reload (Suberit to 67W) Return to previous configuration.

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13 IV. Reactor Operations

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l B. Core Data  :

1 During this reporting period only the core designation 67 has been l

l used. The "W" mode core (that is -- with the core completelv

' 1 reflected by water ) was used for normal reactor operations. The "T" l I

mode (with the core positioned near the graphite thermal column) is )

used for extended operation (>3 hrs). or beam port and thermal column experiments. The excess reactivity was measured for the 67 W core i configuration in cold, clean critical conditions. In day-to-dav operation the excess reactivity is quite often lower due to the temperature increase of the pool, i

Table 6. CORE TECHNICAL DATA Average Thermal Flux 1.6X1022 n/cm2-sec at 200 kW Maximum Thermal Flux 2.8X101E n/CMI-sec at 200 kW Average Epithermal Flux 1. 6X 1012 n/cm2-sec at 200 kW Worth of Thermal Column 0 .'4 6 %

Worth of Beam Port not detectable Rod Worth (in "T" mode)

Date p-16-79 4-16-79 4-16-79 9-14-89 I 2.64% II 2.65% III 3,36% Reg. 0.34%

Excess Reactivity (in "W" mode) 0.6%

Shutdown Margin (in "W" mode )* ) 4.7%.

Reactivity Addition Rate (max % K/K/sec)

I 0.019 II 0.019 III O.026 Reg. 0.01 l Rod Drop Time (24")

I 480 msec, II 470 msec, III 470 msec, Date 1-12-89

• ) Rod No. III and Reg Rod not taken into account.

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Public Relations

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The reactor staff continues to help ed application of nuclear energy. ucate the public about the during this report period. Over 2343 persons toured the f acilit y orientation by a member of the staff.

reactorTour groups are u the public occasions and tours .

Table 9 lists some of Some of the groups spent an entire day at h i

acquainted with the reactor and performing the facility becoming Usually these groups are from colleges whi simple experiments.

facilities. ch have no reactor Many Junior High Schools and Senior Hi given similar tours, too. gh Schools are l \

Table 9. PUBLIC RELATIONS PROGRAN

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I DATE April 16,1988 PARTICIPANT NUMBER Spring Open House I

April 19,1988 Rolla Third Grade 112 April 28,1988 i St. Louis Lesay 8th Grade 124 June 15,1988 Engineeringfours 15 June,1988 I June 30,1988 July 8.1988 July 18,1988 Jackling Institute.

Minority Engineering Senser Open House 171 131 57 I

98 August 2,1988 Lion's Club International Students j SEHOfours 35 August 10, 1988 i September 17, 1988 Fundamentals of Engineering Week four 33 Parents' Day 58 I

October 29, 1988 University Day 153 October 28,1988 NaynesvilleMiddleSchool 239 November 8, 1988 Physics 1 19 December 16,1988 I February 14,1989 Energency Services Training TennisContestfour.Kickapoo February 18,1989 Eath Counts February 24, 1989 10 31 8

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18 I February 25,1989 Hidwest Industrial Engineering Student Conference March 9,1989 March 15,1989 HeritBadgeUniversity Raymondville High School Crocker High School 36 89 19 j

March 22, 1989 Newborg High School 26 10 1498

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About forty UMR students, graduates and undergraduates, have j participated in classes at the facility, utilizing 44 student-semester hours of allocated time. Also students from several  ;

colleges, and high schools have used the facility.

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The following is a list of scheduled classes at the facility. >

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NE 105 Principles of Nuclear Engineering l i

NE 304 Reactor Laboratory I l NE 306 Reactor Operations NE 308 Reactor Laboratory II NE 490 Research Under the auspices of the Reacter Sharing Program, which is funded by the U.S. Department of Energy, colleges and universities which do not have a nuclear reactor come to the UMR campus to use the UMR Reactor. High schools can now participate in this program too.

About 302 students and their instructors participated in this program. Table 10 lists those schools or similar groups that were involved in this year 's program.

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I Table 10. REACIOR SHARING PROGRAM DATE PARTICIPANT NUMBER April 7,1988 Vienna High School. Harvey Richards, Instructor 14 April 21,1988 East Central College Leroy Alt. Instructor 21 April 29.1988 St. Charles West High School. Becky Teague. Instructor 15 i May 9. 1988 Rolla High School, Bill Brent /Gayle Lucian. Instructors 36 ,

Septesber 15. IS88 Rolla High School Cayle Lucian. Instructor 5 ,

October 19.1988 CallawayHighSchool,JoyceBrown. Instructor 16 Fovember 16. 1988 Washington High School, Eric LaBoube. Instructor 13 Novesber 17,1988 SMSU. Dr. Howard Petefish. Instructor 9  ;

December 1, 1988 EldonHighSchool,Connieiiyrick. Instructor 8 December 9. 1988 LebanonHighSchool.JulieWebb. Instructor 27 December 12,1988 Potosi High School, Bill Nelson. Instructor 16 December 20,1988 Rolla Vo-Tech School, Rita Montgomery, lastructor 12 December.1988 Sylvia Johnson Rolla High School, Individual 1 January 18,1989 West Plains High School, Jack Dillard, Instructor 22 January 26,1989 Rolla High School Science Club Bill Brent. Instructor 14 February 15.1989 LinnTech,JackLight, Instructor 14 February 17,1989 Van Buren fligh School, Daniel Freeman, Instructor 28 February 23,1989 UMCNuclearEngineering,Dr.Kim, Instructor 10 February 25,1989 WellsvilleHighSchool,HikeAnderta,in:tructor 19 February,1989 Mark Milburn, Eldon High School, Individual 2 302 i

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i l I 17 VII. Reactor Health Physics Activities The health physics activities at the UMR Reactor Facility consist primarily of radiation and contamination surveys, monitoring of personnel exposures, airborne activity, pool water activity and waste disposal. Releases of all by-product material to authorized.

licensed recipient s are surveyed and recorded. In addition, health physics activities include calibrations of portable and stationary radiation detection instruments, personnel training, special surveys and monitoring of non-routine procedures. New Health Physics SOP's are being reviewed and additional SOPS are being written and will be implemented.

I Routine Surveys I Monthly radiation surveys of the facility consist of direct gamma and neutron measurements with the reactor at power. No unusual i exposure rates were f ound. Monthly surface contamination surveys consist of 20 to 30 swipes counted separately f or alpha, beta and gamma activity. In 12 monthly surveys, no significant contamination outside of contained work areas was found.

By-Product Material Release Surveys During the period, there were 2 shipments of by-product material released from the reactor facility to Dr. Roger Brown on the UMR Campus. In June of 1988, 1 microcurie of Y-90 beads was released

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18 and in December of 1988, 2 millicuries of Ho-166 fibers were released.

I Routine Monitoring Thirty-five reactor facility personnel and students involved with operations in the reactor facility are currently assigned beta gamma, neutron film badges which are read twice each month. There are 4 area beta gamma, neutron badges assigned and one test badge to check accuracy of exposure reports. In addition, 4-7 direct -reading dosimeters are used for visitors and high radiation area work. There have been no personnel over exposures during the period.

I Airborne activity in the reactor facility is constant 1v monitored by a fixed-filter, particulate continuous air monitor (CAM) located in the reactor bay. Ar gon -41 is routinely detected during operations.

Pool water activity is monitored monthly to ensure that no gross pool contamination nor fuel cladding rupture has occurred. Gross counts and spectra of long-lived gamma activity are compared to previous monthly counts. From April 1988 through March 1989 sample concentrations averaged 3.07x10-6 pCi/ml.

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l Waste Disposal Release of gaseous and particulate activity through the building exhausts is determined by relating the operating times of the exhaust fans and reactor power during fan operation to previously measured I,

air activity at maximum reactor power. During this period 63.05 millicuries were released into the air. Released isotope was identified as Ar-41.

I Solid waste, including used water filters, used resins and I contaminated paper is stored and/or transf erred to the campus wast e storage area for later shipment to a commercial burial site.

Radioactive waste released t o the sanitary sewer is primarily from regeneration of the resin exchange column. During this period 8 releases to the sanitary sewer totaling approximately 3720 gallons nf I concentrated resin rekenera" ion solution and pool wat er were discharged with a total gross activity of 0.369 millicuries.

Instrument Calibrations i

During this period, portable instruments were calibrated two times. Remot e area monitors were checked f or calibration two times.

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UIII. Plans The conversion of the reactor fuel from high-enriched uranium to low-enriched is expected to be accomplished either this summer (1989)  ;

or next (1990).

The past ef f orts to upgrade research capabilities and to l

increase usage of the facility will continue in the future. It is l intended to establish a group of regular users f or the new f ast gamma-spectroscopy system. This system which is equipped with a sof tware f or the peak search and nuclide identification enables a higher sample throughput and more accurate elemental analysis than in the past.

A visiting researcher will assist potential users to dt; the neutron activation analysis and associated gamma peak analysis. In addition the visiting researcher will work in the area of neutron

,depthyprofiling. .This novel technique enables the measurement of the distribution of certain coating materials, e.g. the thickness of nitride and boron film layers.

A study was performed to assess the feasibility of a I modification of the present pneumatic sample transfer system. The system would be modified such that some of the irradiated samples could be transferred directly from the reactor to the new system for analysis. This would eliminate manual sample handling and enable to analyze short-lived radioisotopes. Firm estimates uhow that $17.000 will be needed for..this upgrade, I A possibility to increase the reactor power, while still

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maintaining the cooling by natural convection, is still being considered. Such an upgrade should help to attract users who are seeking higher neutron fluxes, thus, shorter irradiation times.

Likewise, we will continue our effort to extend the group of utility users who use the facility for their reactor operator training. The reimbursement for the training will help to defray some of the f acility costs and to purchase some needed research and  :

instructional equipment.

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• Nuclear Reactor Facility II UNIVERSITY OF MISSOURI-ROLLA Nuclear Reactor Rolla. MO 65401 0249 Telephone (314) 341 4236 May 1. 1989 United States Nuclear Regulatory Commission Washington, D.C. 20545 RE: License R-79, University of Missouri-Rolla Reactor Docket No, 50-123

Dear Sirs:

The following Progress Report for the University of Missouni-Rolla Reactor (R-79) for the period of April 1, 1988 to March 31.

1989, is sent for your review and inspection.

Sincerely, 1 v Milan Straka Reactor Manager lp Enclosure (10 copies)

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