Code Manual for CONTAIN 2.0 - Federation of American Scientists

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[CONCRETE
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([INTERM
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[POOL
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The major sub-block keywords are GEOMETRY, BC, CRANK, DECAY-HT, CONCRETE,
lNTERM, and POOL. Abriefdescription oftiese blmh~dtheti usage intie Wogenerdclmses
ofproblems isprovided below. Therequired GEOMETRY and BCinput blocks andthe CRANK
input are described in detail at the end of this section. More complete input descriptions of the
optional DECAY-~, CONCRETE, INTERM, and POOL input bkdcs are given in Section 14.3.2.2
through Section 14.3.2.5, respectively.
The CONCRETE layer input block is described in detail in Section 14.3.2.3. If the CORCON model
is used, a concrete layer is required to specify the concrete type and other CORCON model
parameters, including the starting time for the interactions. If CORCON is not specified, the
concrete layer is optional but may be specified with respect to initial material masses and other
parameters for the modeling of conduction heat transfer. Input for problems not involving CORCON
is described in Section 14.3.2.3.1, and input for those involving CORCON is described in Section
14.3.2.3.2.
The INTERM intermediate layer input block is described in detail in Section 14.3.2.4. If the
CORCON model is specified, only one intermediate layer with three nodes maybe defined. This
single CONTAIN intermediate layer is used to initialize the CORCON melt layers. If CORCON is
not specified, multiple intermediate layers with one node each may be specified. Each such layer
will be included in the heat transfer modeling. Input for problems not involving CORCON is
described in Section 14.3.2.4.1 and input for those involving CORCON is described in Section
14.3.2.4.2.
The POOL layer input block is described in detail in Section 14.3.2.5. A pool layer should be
specified in any problem with a lower cell. The pool layer is used as a repository for coolant in the
lower cell. Even if coolant is not initially present in a problem, the pool layer should be specified
if coolant is expected to accumulate in the lower cell. Aerosol settling will occur automatically onto
the lower cell ifa pool is dejined, but not otherwise. A pool layer is also required if coolant boiling
is to be modeled. Note that the pool layer must be specified to lie on top of all other specified layers;
otherwise, unpredictable results may occur with respect to condensation, boiling, and pool scrubbing.
The layers specified will depend on the problem being analyzed. Only those expected to play a role
in the analysis need be specified in the input. If a layer is initially empty, but could be created in the
Rev. O 14-116 6/30/97