ORNL-1816 - the Molten Salt Energy Technologies Web Site

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ANP QUARTERLY PROGRESS REPORT
would be placed on a diagonal across the south-
west corner of the addition. Each radiator core
would have an inlet face 24 by 24 in. and a depth
of 6 in. These radiators would be located at floor
grade over the NaK pipe lines and the NaK fill and
drain pit. Four 75,000-cfm axial-flow blowers de-
signed to give a head of 10 in. H,O would force
air through the radiators and out through a discharge
stack.
The fuel fill-and-drain system envisioned for the
ART incorporates two shielded dump tanks. One
would be coupled to the reactor with a remotely
operated coupling, while a second emergency dump
tank would be welded directly to a discharge pipe
from the reactor. The remotely operated coupling
to the first fuel dump tank would give flexibility'in
the operation of the reactor, since it would make it
possible to bring fuel to or remove it from the site
expeditiously and would keep the footage of pipe
and the number of valves to a minimum,
For handling the heavy, shielded fluoride and
sodium containers inside the inner tank, a track
would be installed on the floor and inside the wall.
Wheels would be mounted on both the bottom and
one end of the tank dolly so that the assembly
could be lowered by the overhead crane to the floor
track, with the end wheels on the dolly riding
against the vertical track. Once on the floor track,
each dolly would be moved to its operating station
under the reactor. Each track pair in this area
would probably be mounted on a lift for raising the
tank connection nozzle to the contact position
within the reactor shield.
In addition to the NaK piping bulkhead mentioned
above, a control junction panel such as that shown
in Fig. 2.7 would be installed as a part of another
bulkhead through the tank below the building floor
grade to pass the tubing and the electrical con-
ductors required for operation, control, and moni-
toring. Two more bulkheads, in the form of man-
holes, would probably be installed in the upper
portions of the inner and outer tanks. One manhole
would be about 3 by 5 ft and located just above the
inner tank flange to altow passage through both
tainer walls and thus provide entrance to the
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inner tank subsequent to placement of these sections
of equipment. The second opening would be a
manhole about 5 ft in diameter in the hemispherical
top of the inner tank to provide overhead crane
service after placement of the top. Sufficient cat-
walks, ladders, and hoisting equipment would be
installed within the inner tank to provide easy
access for servicing all equipment, as shown in
Fig. 2.6.
The control bulkhead in the double-walled tank
would be located so that the associated control
junction panel and the control tunnel would be on
the control room side of the tank. The tunnel
would extend to the auxiliary equipment pit (formerly
the ARE slab storage pit), where it would terminate.
The tubes and conductors from the junction panel
would be channeled from the tunnel either to equip-
ment in the pit and basement or to the control
room (formerly the ARE control room). The pit and
basement equipment would include such items as
the lubricating oil pumps and cooler, borated shield
water pumps, cooler and makeup equipment, vacuum
pumps, relays, switch gear, and emergency power
SUPPIY.
The reactor off-gas flow would probably be piped
through the NaK piping bulkhead to a disposal
facility outside the building. Such a system would
probably consist of an activated-charcoal absorption
bed contained within a pipe which would be long
enough to provide the required delay period to
bring the activity of the krypton (which would not
be adsorbed by the charcoal) to a tolerable level,
Field maintenance and laboratory facilities
would be installed in the area east of the ART test
bay and south of the low bay of the ARE. This
area and the ARE experimental bay would be
partitioned from the ART test bay with about a
16-in.-thick shield wall of stacked solid concrete
block. This wall would not be erected until after
placement of the upper sections of the doublewalled
tank. The only other major rework of the
ARE facility to accommodate the ART would
probably be that of modifying and equipping one
of the ARE experimental pits for underwater disassembly
work on the reactor after operation.
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