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MICROCOPY RESOLUTION TEST CHART
NATIONAL BUREAU OF STANDARDS - 1963
ORI-P-2410
S
SEP 2 2 1966
Cont-661001-23
REMOTELY OPERATE
MENT
R FABRICATING
HFIR TARGET ELEMENTS**
M. K. Preston, *** J. D. Sease, J. E. Van Cleve, Jr., and A. L. Lotts
CFSTI PRICES
ABSTRACT
H.C. $ 2.00 MNO
One of the principal problems in the Transuranium Program at
the Oak Ridge National Laboratory was the development of equipment for
remotely fabricating High Flux Isotope Reactor target elements. The tar-
get element, which is composed of 35 actinide oxide-aluminum powder pellets
clad with an aluminum tube contained in a target sheath, is fabricated by
techniques that embrace powder-metallurgical, welding, metal-forming and
inspection procedures. Equipment was developed to carry out all steps in
the process in three hot cells in the ORNL Transuranium Processing Facility.
All development stages have been successfully completed, and a portion of
the equipment has been operated with radioactive material.
INTRODUCTION
The purpose of the Transuranium Program at the Oak Ridge National
Laboratory is to produce gran quantities of the heavier transuranium elements
by successive neutron captures in 239Pu. The first part of the production
path, the production of 242 Pu, was carried out at Savannah River Laboratory. .
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*Research sponsored by the U.S. Atomic Energy Commission under contract
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with the Union Carbide Corporation.
+Sponsor - A. R. Olsen.
**General Engineering and Construction Division.
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*

RELEASED FOR ANNOUNCEMENT
IN NUCLEAR SCIENCE ABSTRACTS
Facilities and equipment at ORNL will be used to further irradiate the 242 Pu
and to recover the isotopes produced. Target elements containing primarily
242 P4, 243Am, and 244 Cm will be fabricated and irradiated in the High Flux
Isotope Reactor (HFIR). After irradiation, the target elements will be
processed in the Transuranium Processing Facility (TRU) to recover the prod-
uct actinides and to recycle the target actinides to the HFIR.
One of the principal problems in this program was the development of
suitable equipment for remotely fabricating the HFIR targets in TRU. TO
satisfactorily carry out the recycle of the target material, we developed
equipment not only capable of fabricating the target elements, which dictate
remote fabrication, but also equipment that is reliable, that is capable of
producing an assembly with rigid specifications, and that is easily operated
by general operators available in a multipurpose facility. This paper,
which is a follow-up on a previous paper on the conceptual design of equip-
ment for remotely fabricating targets, ? contains a description of the equip-
ment that has been developed and placed into operation. A sound-color
movie showing the operation of this equipment will be shown during the
oral presentation.
BASIS FOR EQUIPMENT DESIGN AND DEVELOPMENT
The equipment design and development were influenced primarily by the
design of the target element, which is to be irradiated in the Llux trap of
,
the HFIR, by its performance requirements and specifications, by the physical
location of equipment in TRU, and by the restraints imposed by operation in
that facility.
LEGAL NOTICE
This report was prepared as an account of Govorament oponsored work, Neltbor the United
Statos, nor the Commission, nor any person acung od behalf of the Commission:
A. Makes viny warranty or ropresentation, expressed or implied, with respect lo the accu-
racy, completeness, or usofulness of the Information contalood in this report, or what we wo
of any information, apparatus, method, or process disclosed in this report may not infringe
privately owned rights; or
B. Assumes any llabilities with respect to the use of, or for damages rosulung from the
use of any information, apparatus, method, or process disclosed in this report,
ao usod in the above, "por son acting on behalf of the Commission" includes any om-
ployee or contrector of the Commission, or omployee of such contractor, to the oxtent that
such employee or contractor of the Commission, or omployce of such contractor properos,
disseminator, or provides acco88 to, any information pursuant to do employment or contract
with the Commission, or his employment will such contractor.
Target Element Design
For irradiation of transplutonium elements, actinide oxides are encased
in a target element depicteü in Fig. 1.
The target region in the HFIR con-
sists of 31 of these individual target elements, as shown in Fig. 2.
The
target element is composed of 35 individually jacketed pressed pellets, each
containing approximately 12 vol. Co actinide oxide dispersed in aluminum. The
pellets are contained in a type X8001 aluminum tube with discontinuous fins,
which are attached to one end of the target rod sheath. The targets also
have plenums at each end for accommodation of fission gas. These regions
are supported with liners, which are also necessary, as shall be seen later,
for support of the tube during the processing.
Target elements of this
design have performed satisfactorily in tests at the service conditions
expected in HFIR. 3
Process Description
In selecting a fabrication flowsheet for producing the target elements,
the preeminent concer was that these rods must be fabricated remotely in
TRU. Considerable attention was given to the simplification and adaptability
of the process to remote operation. We were careful, however, not to com-
promise the process in any way that sacrifices required integrity of the
target elements.
The final flowsheet selected is summarized in Fig. 3.
In the process an actinide precipitate is first calcined at temperatures
ranging to 1200°C depending on the particular elements involved. This
material is then weighed and the proper amount of aluminum powier is added.
Pellets are pressed from a blend of this mixture and jacketed with aluminum.
Before processing, the dies are preloaded with an aluminum tube liner and
.....
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...
...
-..-
bottom cap power. During processing and after filling with the actinide
oxide-aluminum powder mixture, cap powder is added to the top of the die.
Inis scheme provides primary containment of these high-specific-activity
nuclides in a pellet (Fig. 4) with a density approximately 89% of the theoret-
ical value. Commercial drill bushings of the appropriate size were selected
as the pressing dies. These low-cost, mass-produced items can be discarded
after a single pressing, thus reducing the spread of contamination and
avoiding aluminum galling in the die.
As the pellets are pressed, they are accumulated in a magazine. Before
the magazine is loaded, the pellets are checked for length and weight to
coniirm that the proper amount of actinide was loaded. When a batch for one
'Carget is accumulated, the pellets are first decontaminated in an ultrasonic
water bath and then thermally treated at approximately 450°C in a vacuum to
eliminate any remaining lubricant cr water from the pellet.
Following thermal treatment, the pellets are inspected for surface
blisters and loaded into the target tubes. After loading, the column length
is measured so that the support liner can be cut. After introduction of the
support liner, the target tube is end capped by a TIG welding process. .
Both the end cap and the process used to weld the end cap were specially
designed to circumvent the problems that are normally associated with welding
small diameter aluminum tubing.
Inability to close welds on such tubing
because of gas blowouts is common; and, even when the welds are closed, they
may be porous. In our process, this is eliminated through the use of a
swage joint (Fig. 5). The final closure joint is mechanically closed by
swaging a relatively gas-tight seal in the groove. Before swaging, helium
.
.
....
.
at less than 1 atm pressure is introduced. After obtaining the gas-tight
seal, the welding chamber is pressurized to latm, and the weld is then made
with a greater pressure on the outside of the tube than inside. Blowout
and porosity of the weld are eliminated, as shown in Fig. 6. After the end
cap is attached, the target tube is inspected by a helium leak test and
ultrasonically cleaned to remove any loose contamination from its exterior.
The target tube is then inspected for transferable contamination and
radiographed at various positions along its length to certify the integrity
of the weld and also to record the positions of the pellets. After radiog-
raphy, the aluminum tube is collapsed onto the pellets by hydrostatic
pressure of approximately 20,000 psi to enhance heat transfer. The target
is straightened mechanically by pulling the target tube from both ends at
a force of approximately 500 lb to an elongation of 1/8 in. After the
carget tube is inspected for bow and diameter, the target sheath is fixed
to the tube fins by mechanical staking at the bottom of the target. The
assembly is dimensionally inspected, ultrasonically cleaned, and shipped to
the HFIR.
DESCRIPTION OF TRU
The process will be carried out in TRU, which was described in detail
at a previous conference.4
To briefly review this facility, it consists of
nine heavily shielded cells served by master-slave manipulators.
The nine
shielded process cells are arranged in a line and each of the process cells
is 7 x 7 ft in area. The cross section of the cell is shown in Fig. 7.
Movable top plugs provide access to the cell. The front face of each cell,
which is shielded with 54-in, magnetite concrete, has a window, master-slave
manipulators, and ports for installation of periscopes. Within the shielded
cells, the process equipment is enclosed by a cell cubicle. Behind and
below the cell cubicle and shielded from it by a removable concrete wall is
a tank pit for housing waste collection equipment and processing and storage
links. Service lines enter through removable plugs in the back and top of
the cell, as shown in Fig. 6.
Three cells are being used for target fabrication. Access to each of
these cells is gained through the use of the intercell conveyor.
The con-
veyor canister, which is internally 8 in. in diameter and 8 in. in height,
can be used for the transfer of small tools, samples, and replacement com-
ponents for equipment. In addition, an 18- X 36-in, hatch is provided in
the roof of the cubicle for removal of large equipment items into a movable
shieldea equipment caisson. Special bridge cranes were installed for move-
ment of heavy wjects inside the target fabrication cubicles. The service
provisions for the target fabrication cells are drainage lines to the tank
pits, electrical and piped services, which run through the roof plugs to :
the chemical makeup area, and similar connections that run from the chemical
makeup area to the control equipment located in the operating area.
SPECIAL PROBLEMS IMPOSED IN EQUIPMENT DESIGN
The characteristics of the materials to be fabricated, the target element
itself, and the restrictions imposed by the facility all caused special prob-
lems that had to be considered in the equipment design. First, attention had
to be given to the use of materials resistant to the neutron and gamma
9.
radiation that will be present in the hot cells during fabrication.
Secondly, the effect that the long leads for electrical controls and for
piping would have on the process was not clear. Thirdly, the crowded cell
conditions reant that special attention had to be given to the conditions
that would exist during normal operations and maintenance, Fourthly, the
restrictions on access meant that various sensitive components that might
require replacement frequently should fit within the intercell conveyor
and that the equipment items themselves should be sized for the opening in
the top of the cell cubicle. Finally, problems with air currents and
vibrations were anticipated but could not be defined.
CRITERIA SELECTED FOR DESIGN
Inicially, the basic criteria established for the design of the target-
element fabrication process and its associated equipment were that the opera-
tion should be simple, reliable, and capable of producing elements to the
specified tolerances and that the equipment should be smaid, require minimum
maintenance, be well advanced technologically, and be resistant to damage by
gamma and neutron radiation.
The system had to be designed to minimize the
spread of contamination and facilitate replacement of its components. Since
a great number of components were to be handled, especially during the pellet
.
.
.
fabrication operations, and since some target components could be damaged if
manipulators were used for handling, we decided that the transfer arms or
......
other special devices should be used to move target rod components between
*-*....ceano.....
the various steps in the process. We also decided that the equipment should
be designed to operate semiautomatically with minimum use of manipulators
-8-
for performance of physical operations required in the process. We believe
that master-slave manipulators should be used primarily for equipment
maintenance and for transfer of components to and from the intercell con-
veyor. Wherever possible, sensitive parts were to be small enough for
charging to or discharging from the cubicle via the intercell conveyor. All
removal through the 18- x 36-in, hatch in the roof.
We further stipulated that the individual processes should be assigned
to the cells according to the degree of contamination that could be expected
from them. Generally, the operations with loose powders were to be performed
in cell 3, those with pellets in unsealed tubes in cell 2, and those with
sealed target elements in cell l. We knew that the process should be
designed to contain the material as early as possible in the process and
that all possible steps should be taken to prevent the spread oi' contamination
downstream in the process. Accordingly, we decided that auxiliary enclosures
should be used to further minimize the spread of contamination and that a
number of cleaning operations should be employed.
Although not all aspects of the criteria were kept we were able to
maintain the primary requirements of the original criteria. We found that
certain transfers could be much more readily and economically accomplished
with the manipulators than with special devices designed for individua..
transfers. For example, the transfer of a magazine containing pressed
pellets from the ultrasonic cleaning equipment to the thermal treatment
station is done with manipulators.
DESCRIPTION OF DEVELOPED EQUIPMENT
The target fabrication equipment has been installed in the TRU facility
and a portion has been operated with radioactive material. Prior to being
installed in the TRU:fabrication cells che equipment was thoroughly tested
in mockup operations. We first unit-tested the equipment and made corrections
needed to make it operate.
The equipment was then installed in the mockup
and operated as a complete system to substantiate its capability of making
satisfactory target elements. All of the equipment items were disassembled
and reassembled in the mockup to demonstrate the capability of remotely
maintaining the equipment. In all of these phases of testing, various equip-
ment items required modification and retesting.
The general mechanical features of the equipment are that it is modular
and fits together in a manner such that individual items are dimensionally
related to each other within close tolerances. Furthermore, virtually all
of the equipment is of special design. We found it almost impossible to use
commercial items that satisfy the requirements for operation in the TRU
Tacility. A number of the machines are, however, modifications of commercial
products.
Cell 3 Equipment
The functions of cell 3 are to prepare the actinide oxide and to fabricate
and inspect the pellets. A photograph of this equipment, as installed in the
cell mockup during the mockup testing phase of the program, is shown in
Fig. 8.
The following discussion of equipment will be keyed to the reference
numbers on the photograph.
I
-10-
One of the principal problems in the design of equipment was that of
obtaining a suitable mounting system to relate the machines dimensionally
to one another. Especially, this was a problem with machines that had to
work together with a conveyance mechanism. Our solution to this problem is
an equipment mounting base (1) that is a welded pipe frame having pads on
top for equipment mounting and lugs on the bottom for attaching the base o
studs located on the cell floor.
The actinide precipitate is calcined in a 3-in. commercially available
tube furnace (not shown in Fig. 8). Batches of material are weighed nith a
400-g top-loading Sauter balance (2) modified for 'remote operation and read-
out.
The standard balance cover was replaced with a special cover to provide
mounting surfaces for two motors and a transducer and to reduce its height
so it would fit within the cell configuration. The aluminum powder add sta-
tion (3), which is manipulator operated, is 'sed to transfer the calcined
actinide from its container to a blending bottle and for the addition of pre-
weighed aluminum powder. By means of a valve, provisions for rotation, and
a motorized vibrator to assure transfer, the material is easily transferred
from one container to another.
The blender (4) is a 16.6 rpm geared Slo-Syn motor, and the blending
bottle is held in place on the output shaft with a mounting ring. The
blender in turn is mounted on a blender elevator, which provides the vertical
motion required to obtain the clearance for placing the die holder on the die
scale. The dispenser (5) consists of a bottle holder and a Syntron vibratory
feeder with a special dispensing trough. All of these components are mounted
on the platform of the blender elevator. The rate of feed of the powder into
-11-
ühe die assembly, which is important in obtaining homogeneous distribution of
oxide, is controlled by a preset rheostat located in the electrical control
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•
panel. The die holder station (6) consists of a motorized actuator for
placing the die holder on the die assembly before it is transferred to the
die scale for Icading the actinide-aluminum powder mixture. The die scale (7)
is a 160-g top-loading Sauter balance, similar to the batch scale, which we
modified for remote operation and automatic readout.
The cap powder station (8) is used to add the aluminum powder that forms
the top cap for the pellets. An elevating loader lowers the powder dispensing
mechanism into the proper position for iddition oť the powder. A powder fun-
nel enters the top of the die assembly and seats on the aluminum liner tube;
the irdexing motor then rotates the plastic powder magazine so that one of the
40 preweighed cap powder loadings is over the funnel opening; and an air
cylinder then engagess the powder magazine and pushes it over the discharge
hoie to release the cap powder to the die assembly.
The die assembly feed
station (9) is used to hold and dispense dies for the pelletizing operations
carried out in cubicle 3.
The assembly is primarily a spring-actuated mecha-
nism for feeding dies from the magazine into the central transfer arm (10),
which is used to transfer the die assembly.
The transfer arm swings through.
an arc of approximately 70° to serve the die magazine station, the die holder
staticn, the powder dispensing and weighing station, the cap powder station,
the pellet press, and the used die disposal station. The only other motion
required is for the fingers to open and close to release or clamp the die
assembly as required.
-12-
The pellet press (11) is an automatic hydraulic press with auxiliary
equipment to perform certain other functions that are required to complete
a pellet pressing cycle. Most of these functions are controlled by an
auxiliary shaft which is indexed to six different stations by a hydraulically
operated ratchet located at the base of the shaft.
The press performs indi-
vidual functions of loading a top punch, loading a die assembly, pressing the
pellet, pressing out the bottom punch, pressing out the pellet, dropping the
pellet to the pellet scale, and dropping the used die.
After pressing, the pellets are inspected in the pellet weighing and
measuring station (12). After the pellet is weighed on the scale, the
balancing motor is switched out of the circuit. Then, a small air jet on
the scale beam under the pellet unbalances the scale bringing the top of the
peliet into contact with the gage pin. A differential transducer reading at
this point indicates the amount of unbalance of the scale and thus gives a
direct indication of the pellet length. A master gage pellet is used periodi-
cally to calibrate the indications of the pellet weight and length measurements.
A pellet magazine (13) is used to receive the pellets, hold them while
they are ultrasonically cleaned and thermally treated, and finally discharges
...........
them to cell 2. During this process, the identity of each individual pellet
is maintained. Indexing mechanisms are provided at the various positions to
rotate the cylinder inside the magazine.
The magazine can be inserted into
ühe indexer mechanisms with the cylinder in only one position; this assures
------------------------------------.....
that the pellets are placed in the cylinder in proper order. The pellets
are cleaned in an ultrasonic cleaner (24) which consists of a two-compartment
tank, the top portion of which is a cleaning tank and the bottom and larger
portion of which contains the immersible ultrasonic transducer,
-13-
To remove any residual stearic acid and moisture from the pellets, they
are thermally treated in a modified commercially available furnace (15),
which operates at a maximum temperature of 800°C. Vacuum systems and heating
controls are located outside the cubicle. After thermal treatment, the pel-
ini
lets are discharged at the pellet discharge station (16), which consists of
an indexing motor assembly for individually unloading the pellets through a
tube into cell 2.
Cell 2 Equipment
The functions of cell 2 are to complete the inspection of the pellets,
load them into tubes, weld the tube and end cap, and perform the initial in-
spection of the end-cap weld. This equipment installed in the cell mockup
is shown in Fig. 9. The equipment is mounted on a base (1) for spacing in a
manner very similar to that used in cubicle 3. All of the equipment except
the pellet inspection and loading equipment is mounted on this base so that
the machines can work together with the transfer arm provided in this cubicle.
The pellet inspection and loading equipment (2) consists of four major
components: the pellet diameter gage (2a), the pellet feeder (2b), the pellet
loader (2c), and auxiliary enclosure (2a). Operationally, after the pellet
is released from the indexing magazine in cubicle 3, a vibrator moves the
pellet into position for a check of its diameter, which indicates any swelling
of the pellet during the thermal treatment. The pellets are then fed individ-
ually into the target tube by the pellet feeder, which allows only one pellet
to be fed at a time, and the peilet loader, a motor-driven push rod. An
auxiliary enclosure is used to support and contain the equipment and is sealed
wand
.
-14-
to the pass-through port between cubicles 2 and 3.
The top and front are
removable for access to the internal equipment and wiring by the manipulator
and irapact wrench.
The purpose of the tube holder and loading station (3) is to receive the
target tube storage container (which contains the target tube), to position
the target tube properly for the loading operation, and then to place the
target rod into position for pickup by the transfer arm. A void measurement
station (4) is used to determine the length of the void space on top of the
pellet column after loading so that the length of the liner to be used can
be determined.
The transfer arm assembly (5) is used to transfer the target tube between
the operations of the tube holder and loading station, the target assembly
machine, the helium leak-test station, and the target transfer station. The
assembly is composed of four main components: the rotational assembly, the
vertical motion drive assembly, the arm assembly, and the clamping-hand
assembly.
The transfer arm rotates by means of an electrically driven motor
to align with the various stations. Positive mechanical stops, positioned by
the manipulator, stop the rotation at the various stations. Mounted on the
rotational assembly is the vertical shaft on which the vertical drive assembly
travels. This assembly consists of a ball bushing outer race mounted in a
housing, which also mounts a gear motor drive and brake. The arm assembly
is fixed by a pin on the vertical motion drive housing and is shaped to clear
other equipment and support the hand assembly at the proper radius. The
clamping-hand assembly contains a small gear motor, which through a screw nut
and linkage arrangement operates the clamping fingers.
-15-
The target rod assembly machine (6) is used to perform all the operations
involved in attaching and sealing the end caps. These include the evacuation
of the target tube, backfilling it with helium, end cap insertion, roll swaging
to obtain a seal, and the actual welding operation. The target rod, after end-
capping is transferred to the leak-test station (7), which operates with a
helium mass spectrometer located externally to the cubicle in the chemical
· operating area of the TRU. After leak testing, the target rod is transferred
by the transfer station (8) and cleaned in an ultrasonic cleaner (9) located
in the wall between cubicles 2 and 1.
The ultrasonic cleaning tank is enclosed
in a transducer tank which is filled with water for transmission of the ultra-
sonic energy. These tanks are separately sealed to avoid draining the transfer
tank during the cleaning operation, and thereby minimizing the amount of
cleaning solution to be handled by the disposal system. A push rod rotates
the target rod to facilitate proper cleaning and to transfer the target rod
to cell l.
Cell 1 Equipment
The general arrangement of the cell l equipment, which is used for the
final inspection and fabrication of the target elements, is shown in Fig. 10.
For spacing, the equipment is mounted on a base (1) similar to those pre-
viously described.
The purpose of the target rod receiver (2) is to receive the rod from
the ultrasonic cleaner in the cell wall and position it for pickup by the
transfer arm. The transfer arm (3) in cell I is almost identical in design
to the arm in cell 2.
The first step of the processing in this cubicle is testing for surface
contamination, which is done in the target dryer and smear station (4).
The
-16-
dryer consists of a drying tube and a heater with connection for a compressed
air supply. The surface smearing is done with two foam rubber pads encased
in a holder. The radiography is done at the x-ray station; the film holde.. (5)
is used to hold the target rod for X-ray inspection, to hold the x-ray film in
proper relation to the target rod, and to provide unexposed film as it is
needed. The x-ray tube (6) is mounted on a supporting platform in a position
opposite the x-ray station. The x-ray film is held in a film spool container (7),
waich has stainless steel internal and external sleeves filled with depleted
uranium. The containers are used to protect the film spool during transport
via the intercell conveyor past the other eight cubicles, which are likely to
have highly radioactive sources.
The dimensional inspection unit (8) is used to measure the diameter and
straightness of the target rod before and after collapse and the dimensions
of the target element after the target sheath is placed onto the tube. Six
linearly variable differential transformers are mounted in a preadjusted
cartridge which in turn is mounted in a carriage plate which operates on two
vertical shafts. Vertical motion is provided by roller cxin and sprocket
drive powered by a Slo-Syn gear motor. The hydrostatic collapse chamber (9)
is used to collapse the target tube onto the pellet. A high-pressure pump
i ocated outside the cubicle supplies 20,000 psi water through high-pressure
tubing and a disconnect near the base of the hydrostatic collapse unit. The
heliwn leak-test chamber (10) provided in this cell is identical to that
described for cell 2..
The target sheath attachment fixture (11) is used to mechanically attach
the lower end of the sheath to the thin target tube. This is done by means
of plungers, which are forced into the sheath by the rotation of a cam powered
by a standard air cylinder. Another ultrasonic cieaner (12) is provided in
-17-
cubicle I to remove any foreiga material irom the target prior to its shipment
to the HTIR. Finally, the target element is discharged through the discharge
station (13) por introduction to the carrier located on top of the cell.
Electrical Control Systems
All operations of the mechanical equipment previously described are con-
trolled from panels in the operating area. These panels are designed for
semiautomatic control. in that each successive step is indicated by the panel
lighting system.
PRESENT STATUS OF THE EQUIPMENT
All of the equipment has been cperated with nonradioactive materials in
the TRU cells, and the equipment in cell l has been used to inspect irradiated
targets. Our experience indicates that the weighing devices will be the most
difficuit machines to keep calibrated and operating properly. We have had to
zemotely repair and maintain a number of other machines, but this has been
done without incident. Although the equipment is performing satisfactorily
in our preliminary hot-cell work, we can completely determine its reliability
and adequacy only after extensive fabrication of recycle targets.
-18.
REFERENCES
1.
W. C. Thurber and A. L. Lotts, "Development of Procedures and Equipment
for Fabrication of High Flux Isotope Reactor Target Rods," pp. 27–38
in Proceedings of the 10th Conference on Hot Laboratories and Equipment,
American Nuclear Society, Hinsdale, Illinois, 1963.
"Development and Fabrication of HFIR Target Elements," Motion Picture
Department, Oak Ridge National Laboratory.
3.
A. R. Olsen et al., "Irradiation of High Flux Isotope Reactor Target
Prototypes," paper presented at the 12th Annual American Nuclear Society
4.
Meeting, Denver, Colorado, June 19-23, 1966.
W. E. Unger, B. F. Bottenfield, and F. L. Hannon, "Transuranium Processing
Facility Design," pp. 3–10 in Proceedings of the 10th Conference on Hot
Laboratories and Equipment, American Nuclear Society, Hinsdale, Illinois,
1963.
-19-
عمعععصملحهم
FIGURES
Fig. 1 (ORNL-DWG 65-1383) HFIR Target Element.
Fig. 2 (ORNL Photo 80115) HFIR Target Element Assembly.
Fig. 3 (ORNL - DWG 66-7233) HFIR Target Fabrication Flowsheet.
Fig. 4 (7-70163) Transverse and Longitudinal Pellet Cross Sections,
Fig. 5 (Y-70162) Cross Section of End Cap Before Welding.
Fig. 6 (Y-67844) Cross Section of End-Cap Weld.
Fig. 7 (ORNL-LR-DWG 60562) Transuranium Facility Cell: Cross Section.
Fig. 8 (Photo 82455A) Mockup of Cell 3 Target Fabrication Equipment.
Fig. 9 (Photo 82454A) Mockup of Cell 2 Target Fabrication Equipment.
Fig. 10 (Photo 82453A) Mockup of Cell 1 Target Fabrication Equipment.
ORNL-DWG 65-1383

.
0.050-in. ALUMINUM POWDER END CAPS
0.571 in.
7075-T6 ALUMINUM
SUPPORT LINER
ALE AINUM-ACTINIDE
OXIDE COMPACT
0.5"
LA
PELLET (35)
MECHANICAL STAKING
HEX SHEATH TO FINN-
ED TUBE
0.249-in.
DIAM
75964 -in.
VOID LENGTH —
/
Í
*
*
0.665-in. HEX
(FLAT TO FLAT)
20-in. ACTIVE LENGTH —
35 in.
-
-
42964-in.
+ VOID LENGTH
Fig. 1 (ORNL-DWG 65-1383) HFIR Target Element – M. K. Preston, Remotely
Operated Equipment .....
Созалгамж
..
. . .
- ...
.
. . .
1
.
Fig. 2 (ORIL-Picto 80115) HIFIR Target Element Assembly – M. K. Proston,
Remotely Operated Equipment ....

ORNL-DVG 66-7233
Fig. 3 (ORNL-DWG 66-7233) HFIR Target Fabrication Flowsheet – M. K. Preston,
Remotely Operated Equipment ....
ACTINIDE
PRECIPITATE
CALCINE
(TO 1200°C)
ACTINICE OXIDE
PREPARED
AI TUBE
#LOAD PELLETS IN TUBE
CHECK SURFACE
CONTAMINATION
WEIGH BATCH
PRE-CUT
LINER
LOAD SUPPORT LINER
RADIOGRAPH
ROD 8. WELDS
PREWEIGHED
AL POWDER
ADD ALUMINUM
POWDER
END CAP-
WELD END CAP
HYDROSTATICALLY
COLLAPSE TUBE
TARGET ROD
BLEND
HELIUM LEAK TEST
STRAIGHTEN
TARGET ROD
PREPARED
DIES
DISPENSE & WEIGH
ULTRASONICALLY
CLEAN ROD
CHECK
DIMENSIONS
TOP CAP
POWDER
ADD TOP CAP
AL POWDER
TARGET
SHEATH
ATTACH TARGET
SHEATH
PRESS
CHECK
DIMENSIONS
PELLET
CHECK PELLET
WEIGHT & LENGTH
ULTRASONICALLY
CLEAN TARGET ELEMENT
TARGET ELEMENT TO HFIR V
ULTRASONICALLY
CLEAN PELLETS
THERMALLY DEGAS
(450°C)
INSPECT PELLET
DIAMETER
rumu
-
Narinssi
como
U
vis
.::.
Ivonü
in..
was; 70
WC
7
V
-
ano our
2
Curio
135
Fig. 4 (7-70163) Transverse and Longitudinal Pellet Cross Sections -
M. K. Preston, Remotely Operated Equipment . ...
.............
........
...
.
.
.
.
... ... ..
..
.
Remotely Cperated Equiprient ....
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---
Car
-
-
Fig. 5 (Y-70162) Cross Section of End Cap Before Welding - M. K. Preston,
-
-
---
-
-
- -
. -
...
.
.
.
.
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...........
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-
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.......
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....
.......
Operated Equipment....
........
Tig. 6 (4-67844) Cross Section of Erd-Cuir
....
- :. K. Preston, Remotely
.
...
imm-
ce
n
a-
UICUSSFIED
ONNE--OWG 60062

Movable shielded Equipment
Ramovol Coisson
Crumical Makeup
Aroo
Maintenance Plug
for Movadlo Moni-
pulutor of Thru Roof
Tools for Underwater
Uso
Equipment
Rock
Seoleo
liner
Service lines
Periscope
Nodol 8
Howy
Duly,
linii
Double Booled
Possible Water
Shielding For
Maintenance
Thru Roof Plug
Operating
Area
-. -
.
Limitad
Acas
-.--..
L. Romovable
GM Monip.
Ario
-
--
Alpria sooled
Window, lood
Gioss
Service lines
to Pir
Tank
0
Duct
Arco
Inter Coll Alpha Sooled
Conveyon
iệ: - Ty -
Off Gos
Filter
Pit
h
GO
Smoled
linar
N
"
S
.
***
.
Fig. " (ORNL-LR-DWG 60562) Transuranium Facility Cell Cross Section -
M. K. Preston, Remotely Operated Equipment . ...
PHOTO 824550
1. EQUIPMENT MOUNTING BASE
2. BATCH SCALE AND SUPPORT STRUCTURE
3. ALUMINUM POWDER ADO STATION
4. BLENDER AND BLENDER ELEVATOR?
S. DISPENSER
6. DIE HOLDER STATION
7. DIE-SCALE ASSEMBLY
8. CAP POWDER STATION
9. DIE ASSEMBLY FEED STATION
10. TRANSFER ARM
11. PELLET PRESS
12. PELLET WEIGHING AND MEASURING STATION
13. PELLET MAGAZIS!E AND INDEXING MECHANIS:.:
14. PELLET ULIRASONIC CLEANER
15. PELLET THERMO-CLEANING STATION
16. PELLET DISCHARGE STATION
17. CONVEYOR PORT CLOSURE
Fig. 8 (Photo 824554) Mockup of Cell 3 Target Fabrication Equipment -
M. K. Preston, Remotely Operai. 1 Equipment . ...
--
.
:
..
-
(20)
.
..
.
:
MO
.
- - -
...ne
29 (20)
1. EQUIPMENT MOUNTING BASE
5. TRANSFER ARM ASSEMBLY
2. PELLET INSPECTION AND LOADING EQUIPMENT 6. TARGET ROD ASSEMBLY MACHINE
A. PELLET DIAMETER GAUGE
7. HELIUM LEAK TEST CHAMBER
B. PELLET FEEDER
8. TARGET ROD TRANSFER STATION
C. PELLET LOADER
9. TARGET ROD ULTRASONIC CLEANER
D. AUXILIARY ENCLOSURE (FRONT REMOVED) 10. TARGET TUBE STORAGE CONTAINER
3. TUBE HOLDER AND LOADING STATION
11. CONVEYOR PORT CLOSURE
4. VOID MEASUREMENT STATION :
Fig. 9 (Photo 82454A) Mockup of Cell 2 Target Fabrication Equipment -
M. K. Preston, Remotely operated Equipment ....
PHOTO [2953.
..
?
-.-.,-.
.........
I
.
.
1. EQUIPMENT MOUNTING BASE
8. DIMENSIONAL INSPECTION UNIT
2. TARGET ROD RECEIVER
9. HYDROSTATIC COLLAPSE STATION
3. TRANSFER ARM
10. HELILIA LEAK TEST CHAMBER
4. TARGET ROD DRYER AND SURFACE SMEAR STATION 11. TARGET ROD SHEATH ATTACHMENT UNIT
5. TARGET ROD X-RAY STATION ANO FILM HOLDER . 12. TARGET ELEMENT ULTRASONIC CLEANER
6. X-RAY TUBE AND SUPPORT
13. TARGET ELEMENT DISCHARGE STATION
7. FILM SPOOL SHIELDING CONTAINER
14. HEX C.1!1 STORAGE UNIT
Fig. 10 (Photo 82453A) Mockup of Cell 1 Target Fabrication Equipment -
M. K. Preston, Remotely Operated Equipment ....
-
-
,
.
W-
1
in
N
IN
1.
14.
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--
----
END
DATE FILMED
10/21 / 66







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