PRELIMINARY DESIGN REQUIREMENTS ARGONNE BOILING REACTOR (ARBOR) FACILITY. Revision I Page: 13 of 161
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3. Water Cooler and Steam Condenser Areas
a. Heat Exchanger Building
The water-cooled heat exchangers will be housed in a con-
crete building with floor line approximately at grade level. Earth will be
heaped over the concrete slab roof and sides for additional radiation shield-
ing (see Fig. 5).
b. Steam Condenser Building
The water-cooled steam condensers and de-aerating hotwell
will be housed in a concrete wall building with sheet metal roof. The floor
line of this building will be located at grade level with equipment supported
on structural stands at the required elevations. Required shielding will be
provided with concrete and earth (see Fig. 6).
The reactor consists primarily of the heat-producing core as-
sembly enclosed in a pressure vessel (Fig. 3). This vessel is located in the
. . reactor pit in the High Bay Area of the Main Building, as previously described.
The vessel is supported on six structural steel legs, 8 ft 10 in. long. The load
of the vessel is transmitted to the support legs through a short skirt and lugs
welded to the bottom head. The total operating weight, including water and
core, is approximately 250 tons; the estimated shipping weight of the bare
vessel shell is 150*tons. The top cover flange, consisting of a fabricated
ring and semihemispherical dome, is removable to allow access to the core
for changing fuel arrangements. The control rod drives are attached to
thimbles penetrating this head. A water-cooled laminated steel radiation
shield is fabricated around these thimbles. The weight of the top head and
shield plug is approximately 37 tons.
The vessel is insulated with 4-1/2 in. of Type 430 stainless steel
wool completely enclosed with No. 16 gauge stainless steel sheet attached to
support rings welded to the shell.
The reactor vessel has a design pressure of 2600 psi at a de-
sign temperature of 695F. The inside diameter is 9 ft - 0 in. and the over-
all length is 44 ft - 11-j in., cold. Thermal expansion will increase this
length to 45 ft - 1 in. at an operating temperature of 636F.
The vessel contains internal thermal shielding to protect the
shell against excessive heating by radiation from the core. The thermal
shield consists of a 1-in. thick, 1% boron-stainless steel inner cylinder,
backed up by 11 -in. and 2-in. thick stainless steel cylinders. A thermal
*Based upon ANL preliminary design of reactor vessel.
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Fromm, L.W.; Bernsen, S.A.; Bullinger, C.F. & Matousek, J.F. PRELIMINARY DESIGN REQUIREMENTS ARGONNE BOILING REACTOR (ARBOR) FACILITY. Revision I, report, July 15, 1957; Lemont, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1023272/m1/13/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.