U.S. Reactor Containment Technology: a Compilation of Current Practice in Analysis, Design, Construction, Test, and Operation, Volume 1 Page: 1-51
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Fig. 1.15. Multiple Containment (Advanced Concept) Shown with Pres-
of normal-density reinforced concrete encompasses the outer membrane.
However, the resulting poor heat transfer through the concrete to the
environment required that a decay heat removal system be added. The
normal ventilation air exhaust from the containment vessel is filtered
before being released to the atmosphere through a stack. In the event
of pressure buildup within the vessel, the pervious concrete plus the
two steel membranes would transmit the forces to the outer reinforced
concrete vessel (layer), which is designed to carry the pressure pro-
duced by an mca. The annulus is maintained at a negative pressure to
assure inward leakage flow at all leakage points. The negative pressure
zone (annulus) is continuously monitored for leakage, which is returned
to the containment vessel by a pump-back compressor.
126.96.36.199 Pressure-Suppression Double Containment
In the pressure-suppression version of multiple containment, the
simple pressure-suppression system (see Fig. 1.11) is located within a
building that may be vented through filters to a stack, only when isola-
tion is called for, as shown in Fig. 1.16. In order to meet siting re-
quirements, all proposals involving boiling-water reactors with pressure-
suppression containment more closely resemble the double containment of
Fig. 1.16 than simple pressure suppression only.
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Cottrell, William B. & Savolainen, A. W. U.S. Reactor Containment Technology: a Compilation of Current Practice in Analysis, Design, Construction, Test, and Operation, Volume 1, report, August 1965; Oak Ridge, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc101033/m1/79/: accessed March 22, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.