Derived Requirements for Double Shell Tank (DST) High Level Waste (HLW) Auxiliary Solids Mobilization

Evaluation of Flygt Propeller Xixers for Double Shell Tank (DST) High Level Waste Auxiliary Solids Mobilization

“…Establish requirements for DST HLW solids mobilization that support, if needed, the future evaluation (new scope) of other potential technology candidates. This was addressed in a previous study (Tedeschi 2000).…”

“…Derived Requirements for Double-Shell Tank High-Level Waste Auxiliary Solids Mobilization (Tedeschi 2000) defines the derived functions and requirements for the development of auxiliary, waste solids mobilization equipment for use in HLW tanks. These are the minimum requirements the FlygtTM mixer system shall be expected to meet to receive further consideration as an auxiliary waste mobilization system.…”

“…FlygtTM performed evaluations to select candidate FlygtTM mixers for deployment in Tanks 241-AY-102 and 241-SY-102, working within the riser constraints identified in Section 9.1 and using the information provided in Tedeschi (2000) which includes tank environment data, waste properties, core sample profile data, and jet mixer pump-predicted ECRs. The evaluations as transmitted from FlygtTM are presented in Appendix C. They are focused on predicting the cleaning area of the FlygtTM propeller mixer using results from the Phases A, B, and C testing along with equipment performance data from the selected mixer.…”

Evaluation of Shear Strength Threshold of Concern for Retrieval of Interim-Stored K-Basin Sludge in the Hanford Site

“…Various ECR models have also been developed at the DOE sites (Powell et al 1997, Tedeschi 2000, Poirier 2004). However, these DOE studies have not addressed the solids erosion in terms of the critical shear stress for erosion, but rather with the shear strength or yield stress to express the sludge strength to resist the erosion.…”

“…Because non-dimensional formulas have generally a wider application range than dimensional formulas like Equations 2.1 through 2.4, Crowe at Washington State University developed a nondimensional ECR formula for the Crowe-1 model by using Powell's 1 /12 and 1 /25-scale experimental data (Tedeschi 2000). However, as shown in .11 has a better match to the measured ECR values than unconventional definitions of these three nondimensional parameters of Equations 2.6 through 2.8.…”