PRELIMINARY DESIGN REQUIREMENTS ARGONNE BOILING REACTOR (ARBOR) FACILITY. Revision I Page: 27 of 161
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
5. Condenser and Hotwell Control
The objective of the condenser control system is to provide
automatic control of rate of steam condensation to match steam generation
rate such that all steam entering the condensers is condensed, but that the
condensate entering the hotwell is never subcooled by more than a given
adjustable amount in the vicinity of 10F. Hotwell controls have as their
objective the maintenance of desired hotwell saturation temperature and
pressure, water level, and de-aeration bleed flow. Suggested methods of
accomplishing these objectives are described in order to provide some in-
dication of the complexity of the system. The Architect-Engineer is ex-
pected to review these and other possible methods in detail, consulting
instrument manufacturers where necessary, and to propose in detail the
final system to be employed.
Each of the steam condensers is equipped with temperature-
sensing elements in the inlet and outlet lines, connected so as to measure
differential temperature across the unit. It may be necessary to use thermo-
piles for these elements, since differential temperatures to be measured are
lOF or less. Each condenser is also equipped with a motor-operated gate
valve in the inlet and outlet line.
All steam condensers are connected in parallel for con-
current operation with the water coolers. Temperature, pressure, and water
level will be controlled in a manner similar to that for the water coolers.
For proper simulation of power plant conditions, the hotwell
tank must be maintained at saturated conditions. This is accomplished by
by-passing a small amount of steam around the condensers through a small
line directly into the hotwell. Flow through this line is controlled by a flow
control valve, S9. The position of this valve is adjusted by an error signal,
produced by a recorder-controller measuring hotwell pressure, which com-
pares this pressure with a manually adjusted set point.
A constant bleed from the vapor space in the hotwell tank is
maintained in order to assure removal of non-condensable gases. Bleed flow
is controlled by means of a flow-orifice and flow-control valve in the bleed
Hotwell water level is controlled by means of a differential
pressure liquid-level recorder-controller featuring adjustable set point and
fixed proportional band. The controller adjusts the position of a flow-control
valve in the line from the primary water make-up system. A set of adjustable
high and low contacts on this recorder serve to actuate annunciators in the
event of system malfunction.
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
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/m1/27/: accessed March 18, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.