Document Type

Thesis

Degree

Master of Science

Department

Computer Engineering

First Advisor's Name

Dr. Kang Yen

First Advisor's Title

Committee Chair

Second Advisor's Name

Dr. David Roelant

Second Advisor's Title

Committee Co-Chair

Third Advisor's Name

Dr. Rajiv Srivastava

Third Advisor's Title

Committee Member

Keywords

In-Tank Imaging, Profiling Sonar, 2-D Imaging, Radioactive waste, Sonar Simulations

Date of Defense

8-4-2005

Abstract

Retrieval, treatment, and disposal of high-level radioactive waste (HLW) is expected to cost between 100 and 300 billion dollars. The risk to workers, public health, and the environment are also a major area of concern for HLW. Visualization of the interface between settled solids and the optically opaque liquid is needed for retrieval of the waste from underground storage tanks.

A Profiling sonar selected for this research generates 2-D image of the interface. Multiple experiments were performed to demonstrate the effectiveness of sonar in real-time monitoring the interface inside HLW tanks. First set of experiments demonstrated that objects shapes could be identified even when 30% of solids entrained in liquid, thereby mapping the interface. Simulation of sonar system validated these results. Second set of experiments confirmed the sonar’s ability in detecting the solids with density similar to the immersed liquid. Third set of experiments determined the affects of near by objects on image resolution. Final set of experiments proved the functional and chemical capabilities of sonar in caustic solution.

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