Dryout modeling in support of the organic tank safety project

Reactive Transport Modeling Approach and its Initial Saltcake Dilution Chemical Modeling

“…Using 0.143 as the difference between the actual and drainable porosities, the actual porosity of the saltcake may vary from 0.273 to 0.613 with an average of 0.393, very close to the 0.386 shown in Table 3.1. Thus Simmons' (a) results are basically consistent with Fort (2000), DeWeese (1988), and Simmons' later analyses (Simmons 1998).…”

“…Simmons' study indicates that the porosity of the sludge, on average, is greater than that of the saltcake by 0.11 (0.494 -0.386). Simmons (1998) and DeWeese (1988) also evaluated many more BY and TX SST tanks. The estimated drainable porosities for 22 BY and TX tanks are presented in Table 3.1.…”

“…As stated above, not all interstitial solution would be drained (pumped out); thus the actual porosity would be greater than the drainable porosity. Simmons (1998) estimated that the actual porosities of Groups 1 and 2 tank wastes are 0.43 and 0.455, respectively. As indicated in Figures 3.1 and 3.2, the difference between the actual and drainable porosities of the saltcake is estimated to be 0.143.…”