PRELIMINARY DESIGN REQUIREMENTS ARGONNE BOILING REACTOR (ARBOR) FACILITY. Revision I Page: 73 of 161
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energized. All push-buttons operating motor starters shall be marked
"Start" or "Stop." "Jog" or "Test" buttons, where needed, shall be so
marked. Black buttons shall be used for start, jog, and test functions.
Red buttons shall be used for stop.
Where motors operate valves, momentary contact push-
buttons shall be used for control. Black buttons shall be used for opening
and shall be marked "Open." Red buttons shall be used for closing and
shall be marked "Close." For each valve, a green pilot light marked
"Power On" shall be energized when power is available to operate the
valves. A white pilot light marked "Open" shall indicate the fully open
valve position, and a blue pilot light marked "Closed" shall indicate the
fully closed position. These pilot lights shall receive their signals from
limit switches mounted on the valve, which shall also have the function
of interrupting power to the drive motor at the limits of travel. In cases
where position indication throughout the range of the valve is required, a
meter-type indicator shall be mounted above the pilot lights.
All relays used for interlocking and control circuits shall
be 110-v AC, magnetically operated, constant duty. They shall have a
minimum of four normally open and four normally closed contacts with
electrically separate terminals for all contacts, such as Square D Type
AG-40. Relays having more than these numbers of contacts (e.g., Square D
Type AG-60) may be used where required. Where a group of relays are
interrelated in function, they may be of the open type (e.g., Square D
Type AO440 or AO-60) and mounted in a common enclosure with full door
access, adequately ventilated with dust-free air.
Clearly reading nameplates must be installed on all equip-
ment and devices for explicit identification. Instruction nameplates must
also be installed where specific instruction or precaution is essential.
2. Instrumentation and Controls
Control of the operation of the entire plant is to be central-
ized in a control room adjacent to the Auxiliary Equipment Area. Remote
control of all valves, motors, and other controlled devices whose operation
is part of daily plant routine must be possible from the control room.
Metering and recording of all important plant and reactor quantities will
be done in the control room as specified. All control power for reactor
controls will be 110-v AC. Where constant voltage is required for elec-
tronic counter devices, control and/or instrumentation, electronically
controlled voltage regulators with a fast time response shall be employed.
Pressure, temperature and flow controls are a part of the
complete experimental reactor system, which includes control of the nu-
clear reactor. The system will be designed as set forth in this section to
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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/m1/73/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.