ML20070K027

Annual Summary of Changes,Tests & Eperiments Performed at Aerotest Radiography & Research Reactor for Period Ending 940630

ML20070K027
Person / Time
Site:	Aerotest
Issue date:	06/30/1994
From:	Meren A, Tsukimura R AEROTEST OPERATIONS, INC.
To:	NRC
References
NUDOCS 9407260079
Download: ML20070K027 (6)

Text

_ ___

$'+ AEROTEST OPERATIONS, INC.

3455 FoSTORIA WAY . SAN RAMON. CALIFORNIA 94583 . (415) 8661212 M

1 July 1994

,.E:2-#- ^; ^ 2- ~=^ " ".. . ::M U.S. Nucles: Regulatory Commission Washington, D.C. 20555

Subject:

Annual Summary of Changes, Tests and Experiments at Aerotest Radiography and Research Reactor (ARRR), Docket No. 50-228, for the period 1 July 1993 through 30 June 1994.

Gentlemen:

The enclosed repoit summarizes the ARRR operations from July 1,1993 through June 30, 1994. This submittal complies with the requirements set forth in 10 CFR, part 50.59,

" Authorization of Changes, Tests and Experiments". Summary forms of monthly operations and scheduled power reductions are included.

No new or unusual problems have been noted during the year and reactor operations have remained stable with respect to safety and reliability.

Very truly yours, Aerotest Operations, Inc. l M h- )

Alfredo W. Meren Reactor Supervisor Enclosure  ;

cc: U.S. Nuclear Regulatory Commission, Tsegion IV Division of Radiation Safety and SafegutMs ,

611 Ryan Plaza Drive , Suite 400 l l Arlington, TX 76011-8064 l

9407260079 DR ADOCK940630 i i

05000228 een A SUBSIDI ARY OF }g' I w _ __. . .- . ._

l ANNUAL

SUMMARY

OF CHANGES, TESTS AND EXPERIMENTS PERFORMED AT THE AEROTEST RADIOGRAPHY AND RESEARCH REACTOR (ARRR)

DOCKET NO. 50-228 FOR THE PERIOD ENDING JUNE 30, 1994 BY

~

r h.

ALfREDO W. MEREN REACTOR SUPERVISOR APPROVED BY RAY TSUKIMURA VICE-PRESIDENT / GENERAL MANAGER AEROTEST OPERATIONS, INC.

, SECTION I 1

I Part I - CHANGES A. In October the wires in the primary pump control circuit were charred after the insulation broke down due to age and heat. All damaged wires were replaced.

B. In December the annual fuel inspection was performed, followed by control rod  ;

calibrations.

]

C. In February concrete shielding was installed between the demineralizer shed and the fence on the east side ef the facility to lower the dose rate at the boundary of the exclusion area.  ;

D. In March the fence on the west side of the facility was moved back 10 feet in onier to -

lower the dose rate at the boundary of the exclusion area.

E. In May Vincent Scott, who was previously laid off in 1993 but maintained his SRO license as a consultant, was rehired.

F. In June th.t wooden shielding over the reactor pool was reinforced in order to minimize the possibil.ity of its falling over in tiie event of an ecrthquake.

Part II - EXPERIMEllTS l

llo new experiments were performed during the year. The experiments performed in this reporting period were as follows: ,

EXPERIMEllT 110.

114 11eutron radiography performed in the radiography facilities.

116 Irradiation of hydrocarbon activation analysis samples. >

120 Irradiation of plastic slides impregnated with microsec, ic quantities of fissionable materials.

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

e

--n-- -

4 SECTION II ARRR MONTHLY OPERATIONS

SUMMARY

DATE OPERATING KILOWATr ACCUMULATED EXPTS. & UNSCHEDULED HOURS HOURS KW HOURS 1RRADIATIONS SHUTDOWNS 7-93 149 26754 9013837 0 1 8-93 175 31475 9045312 0 0 9-93 149 26800 9072112 1 0 10-93 182 32724 9104836 0 1 11-93 151 27100 9131936 0 3 12-93 139 25104 9157040 1 1 1-94 152 27316 9184356 2 0 2-94 132 23819 9208175 1 1 3-94 199 35736 9243911 0 0 4-94 162 29188 9273099 4 0 1

5-94 145 26037 9299136 2 0 6-94 177 31949 9331085 2 1 TOTALS 1912 344002 9331085 13 8

ARRR UNSCHEDULED POWER REDUCTIONS TYPE OF SCRAM CHANNEL AFFECTED

. Oper. Earth H O NO DATE Auto Man.: Spur. Error Cal 1 2 3 4 Quake 2 Comments sable insulation- q 1 7-21-93 x x x x x cut when drawer was pushed in 2 10-5-93 x x x x x power failure 3 11-15-93 x x channel 3 high operation-of-gate-4 11-17-93 x x x x x switch caused

=purious scram 5 11-24-93 x x x x x power failure 6 12-30-93 x x_ ch 3 high spurious 7 2-22-94 x x ch 2 fast period 8 6-20-94 x x ch 2 fast spurious 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28