Theses and Dissertations

Issuing Body

Mississippi State University


Lindner, Jeff S.

Committee Member

Toghiani, Rebecca K.

Committee Member

Hill, Priscilla J.

Date of Degree


Document Type

Graduate Thesis - Open Access


Chemical Engineering

Degree Name

Master of Science


College of Engineering


Dave C. Swalm School of Chemical Engineering


The thesis investigates pipeline plugging mechanisms that have occurred during interim stabilization transfers at Hanford. A laboratory-scale saltwell pumping test loop was designed to evaluate a surrogate of Hanford Tank 241-SX-104 supernate. The effect of surrogate flow rate, cooling water flow rate and phosphate concentrations on plugging mechanisms was investigated. Critical parameters like particle and agglomerate size, velocity and bed growth rate were determined. Theoretical models were used to compare the experimental pressure rise and temperature drop of the surrogate in the channel. An operating region in which a plug would not form was developed, based on the experimental results. Experiments are also reported on plug remediation. Unplugging experiments at varying pump pressure heads and residence time of plug in the line were performed.