PRELIMINARY DESIGN REQUIREMENTS ARGONNE BOILING REACTOR (ARBOR) FACILITY. Revision I Page: 14 of 161
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shock shield of stainless steel sheet is mounted immediatedly above the
thermal shield to protect the upper vessel shell against sudden quenching
as a consequence of emergency cooling of the core by spraying.
The reactor vessel will also contain an emergency core spray
ring, feed-water distribution nozzles, and a conical forced-circulation in-
let plenum chamber, the latter located in the lower head.
The reactor core is supported by the lower head and is attached
to the inlet plenum chamber. It consists of the core support grid, control
rod guide and shroud structure, and the fuel assemblies. The vessel can
accommodate cores of various types and sizes up to an effective diameter
of 5} ft.
D. Primary System
The function of the- primary system is to remove the heat
generated in the reactor core by means of direct steam and condensation
and forced-circulation water cooling. Both of these processes will be car-
ried out at high temperature to minimize the surface required for heat
transfer. The primary system is designed to permit operation of the re-
actor within a range of pressures, powers, general parameters, and general
operating conditions in such a manner that a maximum amount of cycle,
system, and general operating flexibility may be obtained. This cycle and
system flexibility is brought about by making the steam condensate circuit
and forced-circulation water-cooling circuit independent of each other in
such a way that they may be operated separately or concurrently. All heat
exchangers in the primary system are of the water-cooled type.
For steps I and II (see Section III for meanings of steps I, II,
and III) operation the reactor steam output will be discharged to atmosphere
through a stack. For step III this heat will be dissipated through second-
ary steam which will discharge to the same stack. For step II, some pri-
mary steam and some secondary steam will be discharged.
The primary system is presently envisioned as consisting
of the following major components:
a. Water-Cooled Heat Exchangers
(1) Water Coolers
(2) Steam Condensers -
b. Forced-Circulation Pumps
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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/m1/14/: accessed March 19, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.