ML20082C125

Annual Summary of Changes,Tests & Experiments Performed at Aerotest Radiography & Research Test Reactor for Period Ending 910630

ML20082C125
Person / Time
Site:	Aerotest
Issue date:	06/30/1991
From:	Figueredo D, Simens H AEROTEST OPERATIONS, INC.
To:
Shared Package
ML20082C123	List: ML20082C118 ML20082C125
References
NUDOCS 9107180043
Download: ML20082C125 (4)

Text

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ANNU AL

SUMMARY

OF ' ll ANGES, TESTS AND EXPERIMENTS 3

PERFORMED AT Tile 3

AER0 TEST RADIOGRAPHY AND RESEARCil REACTOR (ARRR)

DOCKET NO. 50-228 FOR THE PERIOD ENDING JUNE 30, 1991 BY IX 4.p ), p a D. E. FIGUEREDO DEPUTY REACTOR SUPERVISOR APPROVED BY:

flugo , ns PRESIDEllT X, AER0 TEST OPERATIONS, INC.

9107180043 910709 PDR ADOCK 05000228 R PDR

e SE9Il0H_1 EABI_I_- CH6NGES A. During the year, one graphite element was removed from service and a new stainless clad fuel element was added as a replacement. The new element is 12 weight per cent uranium. The addition was made to compensate for fuel burnup during the preceding year.

B. The entire core was removed for inspection and reloading. An underwater video camera was used to insure that all-of the elements were properly positioned during the reloading. After removal and reloading of all elements, new control rod calibrations were performed using the rod drop technique obtained from General Atomics.

C. Occasional low level spikes have occurred from the air monitor sampling air directly over the pool which are believed to be caused by tramp uranium on the new fuel element. No indication of fuel clad failure has been noted.

D. Two new Senior Reactor Operators and one new SRO upgraded from RO were added to the operating roster during this period.

E. One six inch experiment tube was added to the reactor pool for irradiations. This tube can be placed adjacent to the reactor core to obtain the desired fluence levels. This experiment was approved by the Reactor Safeguards Committee-and-given experiment number 124.

EART___II - EXEEBIMENIS One.new experiment was performed during the year. The experiments performed in this reporting period were as follows:

EXPERIMENT

' NUMBER 114 Neutron radiography performed in the radiography facilities.

116 Irradiation of hydrocarbon activation analysis samples.

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120 Irradiation of plastic slides impregnated with microscopic quantities of fissionable materials.

124 Irradiation of solid state electronic components to determine radiation damage effects.

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i SECTION II ARRR MONTilLY OPEll ATIONS SUtiliARY DATE OPERATING KILOWATT ACCUMULATED EXPERIMENTS UNSCHEDULED HOURS HOURS kw il0URS & IRRADIATIONS SHUTDOWils 7-90 222 55289 73011932 7 3 8-90 234 58254 7363183 3 4 9-90 188 47013 7!110199 0 2 10-90 244 60800 7470999 4 1 11-90 208 51744 7522773 3 1 12-90 185 46460 7569233 4 0 1-9' 228 57132 7626365 4 1 2-91 221 55223 7681588 5 1 3-91 246 61624 7743212 7 1 4-91 258 64568 7807780 5 0 5-91 272 67990 7875770 7 0 6-91 257 64023 7939793 7 0 TOTALS 2763 690150 7939793 56 14 N-

ARRR UNSC11EDifl,ED POWER REDUCTIONS 1TPE OF SCRAtl CllANNEL AFFECTED Oper. Bartli 11 0

1. Date Auto lian. Spur. Error Cal 1 2 3 4 Quake 2 Comments spurious f ast 1 7-2-90 X X 1purious f ast 2 7-17-90 X _X X X ;purious f ast 3 7-31-90 X X X X power f ailure 4 8-8-90 X 5 3-17-90 X X :purious f ast X X X X X power f ailure 6  % 17-90 X X X X X power failure 7 4-23-90 8 1-5-90 X X spurious f ast 9 9-21-90 X X high settire 10 10-10-90 X X opurious f ast 11 11-27-90 X X spurlos f ast X X X X X power failure 12 1- 16-91 ,

high set ting 13 2-11-91 X _X X le of xsvr l to 14 3-18-91 X X cooling tcsvr

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