ML20247D506
| ML20247D506 | |
| Person / Time | |
|---|---|
| Site: | 05000047 |
| Issue date: | 12/31/1965 |
| From: | ARMY, DEPT. OF |
| To: | |
| Shared Package | |
| ML20244A667 | List: |
| References | |
| FOIA-89-315 NUDOCS 8909140284 | |
| Download: ML20247D506 (5) | |
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OPERATIONS REPORT OF L
THE U. S. ARMY MATERIALS RESEARCH AGENCY NUCLEAR REACTOR FACILITY e
(LICENSE R-65, USAEC DOCKET 50-47)
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REPORT NO. 2 l
l JANUARY 1,1965 TO DECEMBER 31, 1965 7,7 v
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.. c NUCLEAR RESEARCH LABORATORY l
i U. S. ARMY MATERIALS RESEARCH AGENCf l:
WATERTOWN, MASSACHUSETTS l
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0 8909140284 890907 (P8 @ 2 @llh __ - _
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h II. OPERATIONAL PROBLEMS
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}M Water Imakage Through Shield q v:
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95jdt This problem was discussed in detail in the previous report. During the
'j(siport period no further corrective action was required. The afnor leaks geontinue to vary in leakage rete and tNre is some small leakage in the base-inent. None of these leaks interfere with operation and do not require any 4special cleaning up.
When modifications are made to increase power level, consideration is absing given to lining the pool with stainless steel or ceramic tile. If this
- !1ining is not feasible, the jointswhere beam tubes and pipes penetrate the
'iconcrete will be sekled with an epoxy resin to replace the pressure-sensitive tape now being used. This tape is becoming brittle and may no longer be jwater-tight.
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Corrosion of Heat Exchanger d
m This problem was discussed in detail in the previous report. The two -
Gstepsmentionedtoremedytheconditionhavebeentaken,namely, replacement hof the aluminum tube bundle with a stainless steel one and insta11stion of a Recirculating water cooling tower to provide secondary coolant. Secondary
'gooolant water analyses have been'made periodically and results indicate that e there should be no further problems in this am a.
g wA C.
Beryllium Oride Reflector Elements a
s3 This problem was discussed in detail in the previous aport. The use of g
- dperforated beryllium oxide reflectors appears to be a satisfactory solution
. and no difficulties have been experienced.
As N!h III. CRANGES g6-NA.
Insulation of Exhaust Line to Stack.
In January 1965, the air exhaust line from the containment shell to the
';/{1758 stack was insulated to prevent freezing of condensed moisture.
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Evacuation Alarm i.
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',i In March 1965, an evacuation alarm was incorporated. This alarm is l jk initiated from the control room and causes the am a monitor alarms to sound li.iintermittentlythroughoutthecontainmentshell.
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Switch Noise Filter E
-In March 1965, the existing noise filters on drive switches were changed
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from a series capacitor-resistor to a capacitor and resistor i.n series with r
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a 1/16 amp fuse in parallel with a high value (250k) resistor and neon light.
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In the event of a ahorted capacitor, the fuse will blow preventing power
.i Progra reachthg any drives and the neon light will indicate which capacitor has shorted resulting in greater reliability.
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Make-up Water Check Valve j d B.
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E In April 1965, the check valve on the pool make-up water line from Bldg.
E; 97 was alocated from outside the containment shell to inside. This was done
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to prevent leakage of pool water to the outside, in the event of a leak in
'.tf the make-up-system outside the shell.
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Secondary Coolant System k~
In April 1965, secondary coolant system was changed from well water to i;$
a cooling tower as described in the previous report.
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Heat Exchanger Tube Bundle e ;
In April 1%5,. The ahmimnq heat exchanger tube bundle was replaced by f 3..
a stainless steel one as described in the previous report.
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Magnets and Magnet Extension Rods X
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$jArsen During 1965, the magnets and magnet extensions rods were modified by
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nplacing the pipe union connecting the two with a cylindrical connector kk housing with provision to bring the leads from the magnat contact switch
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through the housing rather than the can of the magnet. This change greatly
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improved alignment, maintenance and ease of repair.
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Humidity Indicator
>@K reac-In September 1965, a direct reading humidity indicator was installed in f
wgg the basement.
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Lower Limit Switches l
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In September 1965, a second lower limit switch was installed th parallel
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with the existing switch on all rod drives to increase reliability.
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IV. RESEARCH PROGRAMS I
v i A.
Present and Planned Programs g
$j The status of such programs is unchanged since the previous report. Five horizontal six-inch beam tubes are in use in solid state physics research JQ. programs and plans for use of an additional three are underway and somewhat g contingent on the plans to increase power level.
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Completed Programs l
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None.
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Irradiation Program 1.
Reactor Facility: Pneumatic tube I
Principal Investigator: General use g
Experianental Apparatus: Two-inch-diameter tube through which samples J may be pneumatically inserted and removed from the reactor during operation.
$l, Status: In operation d
Experiment: Similar use as for the slant tube discussed b'lo9 e
~ Particularly used for irradiations of short duration. Has been used in pro-e grams for U. S. Army Materials Research Agency, Picatinny Arsenal, Detroit
'I Ararnal, U. S. Army Natick Laboratories.
2.
Reactor Facility: Six-inch slant beam tube
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Principal Investigator: General use
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Experimental Apparatus: Water-filkd six-inch beam tube with h two-W; inch-diameter sample tubes in which samples may be inserted and removed during g recctor operation.
Stat,us: In operation gg,
DuratLon: Indefinite 2:y Experiment: Used for activation analysis of samples containing trcco impurities and for inducing slight radiation effects in materials. Has i been used in programs for U. S. Arg Materials Research Agency, Picatinny Ar-g~ sanal, Detroit Arsenal, U. S. Army Natick Laboratories and the U. S. Army Electronics Research end Development Laboratory, Fort Monmouth.
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Typical uses 9 p 1
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Study of the effects of reactor radiation on non-explosive azides, f f I
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o.g. pure nan 3 doped with impurities.
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Activation analysis for trace impurities in high purity carbon, m
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Activation analysis for tantalum impurities in tungsten compounds, d.
Study of threshold detectors for neutron spectrum measurements.
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Activation analysis for impurities in ultra pure germanium and M
g:rmanium oxide.
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Activation analysis for impurities in high purity magnesium oxide, h
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Activation of tungsten carbide tool:: bits for use in wear studies.
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Study of recoil reactions of Br80, Br80m, and Br82 irradiated at 100 F and at dry ice temperature.
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- i. Activation analysis for the determination of trace elements in g
biological material, g
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- j. Identification of trace-elaments in meteoric dust samples.
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