PRELIMINARY DESIGN REQUIREMENTS ARGONNE BOILING REACTOR (ARBOR) FACILITY. Revision I Page: 46 of 161
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It must be emphasized that the interrelation of valves,
pipe layout, and system instrumentation and control is a matter for joint
effort between the Architect-Engineer and the Laboratory, so that the list-
ing of valves in Table I must be considered tentative only.
All valves are to have a design pressure of 2500 psi
and a design temperature of 695F. The type of operators to be used for
motorized and control valves (electric or pneumatic) shall be studied by
the Architect-Engineer and specifically recommended for each application.
Hydraulic operators shall not be used. Electric operators are preferred
for all outdoor installations, where feasible, because of the possibility of
freeze-up of air lines in pneumatic systems. All pneumatic systems must -
be provided with air dryers.
A preliminary tabulation of primary system piping
sizes and lengths is shown in Table II. Also included is a list of fittings.
This information, based on the present system layout, anticipated flows,
and a design velocity of 15 to 30 fps, is given only to aid the Architect-
Engineer in estimating the extent of these items in the primary system.
g. Steam Separator -- Shutdown Coolers
Steam separator units will not be required for Steps I
and II, and may not be for Step III. Therefore, only stainless steel-lined
shutdown-coolers will be installed. The coolers (2) shall have a combined
heat removal capacity of 24 mw using 100*F cooling water entering at a ~
velocity of 4 to 6 fps. The coolers shall have Type 304 stainless steel
cooling tubes and be located in the steam lines at sufficient elevation above
the reactor level to prevent back flow up the water leg as a result of pres-
sure drop in the steam line. If separators are required for Step III, speci-
fications will be set forth at a later date.
h. Steam Disposal System
For Steps I and II operation, a once-through steam
system is contemplated. Demineralized feed water at 70F will be intro-
duced into the downcomer area and steam produced will be vented to
atmosphere at rates up to about 620,000 lb/hr. For Steps I and II, pri-
mary system steam will be vented through a back pressure-regulating
system by either of two methods. The most direct way is to blow the
steam up through a vertical stack. In the event that this method is un-
satisfactory the steam may be released through a submerged gridwork
of tubes into a pond of water. -
For Step II some secondary steam from the water
coolers must also be dissipated in the same manner. In Step III all re-
actor heat will be dissipated by venting secondary steam.
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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/m1/46/: accessed March 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.