U.S. Reactor Containment Technology: a Compilation of Current Practice in Analysis, Design, Construction, Test, and Operation, Volume 1 Page: 1-48
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184.108.40.206 Pressure-Relief Containment
In the pressure-relief method of containment, shown schematically in
Fig. 1.13, the air and steam are purposely released immediately through an
exhaust duct and then sprays or deluge systems are activated to prevent
excessive pressures from subsequently developing in the containment struc-
ture due to decay heat, etc.
In this technique the containment atmosphere is discharged only during
the initial primary system blowdown. It is applicable only where the
initial blowdown precedes the release of fission products from the core
by a sufficient margin that the once-"relieved" system may be effectively
sealed before significant amounts of fission products are released. Inas-
much as the principal virtue of this system is the low structure design
pressure, the structure is frequently provided with sprays to prevent ex-
cessive pressures from developing after the initial relief. Some activity
ORIL :. i.: -
Pressure-Relief Containment Shown with Pressurized-Water
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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/m1/76/: accessed March 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.