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Code Manual for CONTAIN 2.0 - Federation of American Scientists

Code Manual for CONTAIN 2.0 - Federation of American Scientists

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cmelt<br />

Ovfp<br />

= vfpm<br />

initial oxide and metal masses given in the COMPOS block <strong>of</strong> the<br />

intermediate layer input. The expected length <strong>of</strong> the “cmelt” array is retained<br />

at 32 <strong>for</strong> upward compatibility with older <strong>CONTAIN</strong> input decks. New<br />

decks should simply specify zero <strong>for</strong> these eight entries or use the alternate<br />

<strong>for</strong>mat (“ovfp” = “vfpm”) discussed above.<br />

the masses <strong>of</strong> melt components following the MELTCOMP keyword. The<br />

user must provide a list <strong>of</strong> 32 numbers speci~ing in the following order the<br />

mass <strong>of</strong> each <strong>of</strong> the materials: Cs, I, Xe, Kr, Te, Ba, Sn, Ru, U02, Zr, Zr02,<br />

Fe, FeO, Mo, Sr, Rb, Y, Tc, Rh, Pd, La, Ce, Pr, Nd, Sm, Pu, Cr, Mn, Ni, Ag,<br />

Sb, and Nb. As explained above, the values <strong>of</strong> the major species in this list<br />

(U02, Zr, ZrOz, Fe, FeO, Cr, Mn, and Ni) should be set to zero, since their<br />

masses are now taken from the intermediate layer input.<br />

an alternative input to the MELTCOMP approach <strong>for</strong> specifying initial<br />

inventory <strong>of</strong> the debris pool <strong>for</strong> the VANESA calculation. This approach<br />

may be preferred since materials not present need not be specified. The<br />

variable “ovf@”is the name <strong>of</strong> a species taken from Table 5-4 that is initially<br />

present in the melt. Only the material keywords <strong>for</strong> species present should<br />

be specified, followed by the mass “vfpm” <strong>of</strong> that species. The “ovfjI” =<br />

“vfpm” input is repeated <strong>for</strong> each material initially present. Note that the<br />

mass <strong>of</strong> the major species, U02, Zr, Zr02, Fe, FeO, Cr, Mn, and Ni, should<br />

not be specified here as in the previous implementation <strong>of</strong> CORCON Mod2<br />

in <strong>CONTAIN</strong>. Instead, the masses <strong>of</strong> these materials are initialized in<br />

VANESA from the values given in the COMPOS sub-block <strong>of</strong> the<br />

intermediate layer input. Thus, only the fission product species without an<br />

asterisk in Table 5-4 should be specified. Although the major species may<br />

be included <strong>for</strong> upward compatibility, the masses specified will be ignored.<br />

Default = O. (kg)<br />

NONIDEAL a keyword which initiates the specification <strong>of</strong> the non-ideal solution phase<br />

model. This model is designed so that either the metal phase, the oxide<br />

phase, neither phase, or both phases are treated as being non-ideal. If<br />

METAL is specified, only the metal phase will be treated as non-ideal. If<br />

OXIDE is specified, only the oxide phase will be treated as non-ideal. If<br />

BOTH is specified, both phases will be treated as non-ideal. As <strong>of</strong> this<br />

writing, oxide phase non-ideal modeling is not operational. The OXIDE and<br />

BOTH input options are provided to accommodate fiture improvements to<br />

the VANESA modeling within CORCON. Thus, the only choices available<br />

to the user at this time are METAL and NEITHER. The default is NEJTHER,<br />

which will result in both phases being treated as ideal.<br />

It should be noted that several <strong>of</strong> the previously available options in the VANESA input block have<br />

been made inoperative. In previous versions <strong>of</strong> the code, these keywords invoked optional modeling<br />

treatments that are not compatible with the CORCON Mod3 version that is now being implemented

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