PRELIMINARY DESIGN REQUIREMENTS ARGONNE BOILING REACTOR (ARBOR) FACILITY. Revision I Page: 47 of 161
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DESCRIPTION OF VALVES - PRIMARY STEAM AND ASSOCIATED
SECONDARY COOLING WATER SYSTEMS
Valve Desig. No., Size & Type C
Si-1 thru Two Electri-
S1-y cally Operated
Gate, 10 in.
S2-_ thru Four Pneu-
Control, 4 in.
Rating and Purpose
SMA-3-60 Serve as steam separator isolation valves to
3.89 hp direct flow through appropriate separators
to maintain necessary separation velocities
to cover reactor output total steam flows listed
under valve grouping Sy; maximum pressure
drop about 2 psi; depending on steam separa-
tion efficiencies over flow ranges listed under
SZ, it may be possible to eliminate these S1
valves; (not shown on flow chart).
This valve grouping comprises the turbine-
simulator valves and will pass flows listed
below, and to control, individually and/or in
combination, down to 10% of these flows while
maintaining downstream pressure about 50%
of upstream pressure:
Control, 4 in.
Gate, 12 in.
Gate, 6 in.
This valve to pass up to 25% of reactor out-
put total steam flow; used to maintain
constant pressure in the reactor
SMA-3-60 These serve as inlet shut-off valves on
3.80 hp steam condensers #1 and #2, respectively.
SMA-1-15 These serve as outlet shut-off valves on
0.97 hp steam condensers #1 and #2, respectively.
S6-1 thru Two Electri-
S6-a cally Operated
Gate, 1 in.
Gate, 10 in.
trol, 6 in. or 5 in.
Serve as equalizer; by-pass around valves
S4 to permit draining of condensate through
the condenser and to maintain condensers in
the operating warmed-up temperature range
during stand-by condition.
SMA-3-60 Serves as feedwater pump suction shut-off
3.89 hp valve; pressure drop to be maximum of
1.5 psi at 3250 gpm and 6250 F.
- Controls reactor feedwater flow rate down
to 10% of condensate flow rates listed under
SZ above; valve characteristics to match re-
actor feedwater pump flow rate vs head
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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/m1/47/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.