ML20055G011
| ML20055G011 | |
| Person / Time | |
|---|---|
| Site: | Aerotest |
| Issue date: | 06/30/1990 |
| From: | Figueredo D AEROTEST OPERATIONS, INC. |
| To: | |
| Shared Package | |
| ML20055G010 | List: |
| References | |
| NUDOCS 9007200050 | |
| Download: ML20055G011 (4) | |
Text
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ANNUAL--
SUMMARY
OF. CHANGES, TESTS.AND EXPERIMENTS 1-ii
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PERFORMED AT THE
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. AER0 TEST R'ADIOGRAPilY AND RESEARCH REACTOR' q
e (ARRR) i DOCKET NO.
50 228 FOR' THE PERIOD ENDING JUNE 30, 1990-
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- j DEPUTY REACTOR SUPERVISOR.
APPROVED BY:
Hugo Simens PRESIDENT.
AER0 TEST OPERATIONS, INC.
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'~SECTION _1 h
PART I - CHANCES q
A._- During the year the former Reactor Supervisor retired from active k
employment.at Aerotest.
His place was taken, on an interim basis, by'the
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President of the Company.
' B.
Two sharp carthquakes were felt in the area of the reactor during
.this report year. The_ earthquake of October 17, 1989 occurred after the-4 reactor 'had been : shutdown' for the day.
The event of April-6, 1990 occurred y
during_ shift operations'and. caused an automatic scram.
Both events tripped a-
'the carth. motion sensor, which had not occurred from earth motion at any
. previous _ time. 'After.each. earthquake the reactor was closely inspected for.
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. damage-and none-was found. Jin addition, Control Rod Drop-Tests and Reactivity.
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Measurements were made~to. assure that the reactor was functioning normally, g
These tests showed no' anomalies.
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Most.of the reactor console electronics are-the 1965 vintage, non-solid state units which were part of the original-installation. These
-units, although perfectly usable, now require.more maintenance'and experience more breakdowns: (and ' attendant spurious scrams) than would. be expected,with'
. state'of art components.
D.
Reactor operations have stab 111 zed on a. normal two shift routine
.between the. hours of>8AM and llPM daily. This has led to 11% more accumulated-l 1341 in this year than. int last year, and 32% more than two years ago.
Further D
extending the hoursLof operation is not contemplated at this time.
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I E.' On-October'.9. 1989, 17 graphite reflector elements, obtained from
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LU.C. Berkeley, were added to the core of the reactor. This change added 46crin reactivity, which.was=wc11'within_thet$3.00 margin all'wed by the o
' Technical Specifications.
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o bJ PART II - EXPERIMENTS
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One new experiment was performed during the year. The experiments per-
-formed in this reporting period were as follows:
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'XPERIMENT l
NUMBER-114 Neutron radiography performed in the radiography facilities.
I av 116 Irradiation of hydrocaroon activation analysis sampics, q
u 120 Irradiation of. plastic slides impregnated with microscopic quantities of fissionable materials-for the McClellan Air:
Force Base and General Electric Company.
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124 Irradiation of solid state electronic components to determine.
i radiation damage. effects.
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SECTION4-II.-
ARRR M0NTilLY OPERATIONS
SUMMARY
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~DATE
~0PERATING KILOWATT ACCUMULATED EXPERIMENTS & : UNSCHEDULED-110V RS Il00RS kw fl0URS IRR A DI ATIONS SHUT DOWNS -
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- 7 237 59054 6583746 7-
-1 A
8'-89 249 62226 6645972 8:
0
- 9-89 205 51328 6697300 5
'0
.10-89 240-59748 6757048 7
~1 11 236 58848 6815894 5
2-
.12-89 207 51711 6367605 6
-1 1-90 282-70469 6938074 4
0 2-90 229 57191 6995265 5
1 3-90
.253 63206 7058471 7
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4.
41 0 247-61505 7119976
'S 3
9 5-90 290 72412 7192388 6
-2
- 6-90 230 57255 7249643_
-4' 0
TOTALS 2905 724953 7249643 69 11 i
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-ARRR UNSCHEDULED POWER REDUCTIONS TYPE OF SCRAM CHANNEL AFFECTED Oper.
Barth
- f' Date Auto Man.
Spur. Error Cal 1
2 3
4 Quaka H 0 2
Comments 1
..1 28-89 X
X X
X X
8"Enreinn 2
10-18-8 7 X
X Power,n Spurious-3-
11-20-8 )
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11-20-8 )
X X
SPuripus E "*#
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l2-28-8 )
X X
X X
X f niliiro.
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?-13-90 X
X X
' X X
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4-6-90 X
X spurious 8
4-9-90 X
X fant L
"9' 4-12-90 X
X X
X X
p werfailure spurious-10 5-10-90 X
X fagt spurious X
X fast 11-5-10-9(
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