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past practice sluicing ultra-high-pressure University of Missouri-Rolla underground storage tank Underground Storage Tank-Integrated Demonstration single-shell tank tank waste robotics tank waste remediation system Waste Dislodging and Conveyance EM 30 Project-Tank C106 Manipulator Retrieval System

Executive SummarySeveral systems for the retrieval of radioactive waste have been developed, tested, and deployed by the Integrated Mining Chemical Company (IMCC) in Russia. The technologies for waste removal developed in Russia may have application to certain waste forms within the United States (U.S.) Department of Energy (DOE) tank complex. The Tank Focus Area (TFA), in conjunction with Environmental Management International Programs, sponsored the design, fabrication and testing of Russian Retrieval Equipment for High-Level Waste supernatant and sludge retrieval. The Russian specialists designed, fabricated, and cold tested geometrically scaled models of this equipment for the Department of Energy at Krasnoyarsk, Russia, to aid in the evaluation of the equipment for deployment in the US. The TFA funded the Retrieval Process Development and Enhancement (RPD&E) Project to work with the Russian specialists to test the retrieval equipment. The documentation and evaluation of the initial tests are contained in this report.The main components of the equipment include the Pulsating Pump (a reciprocating airpowered retrieval pump), the Hydroelevator (a liquid-liquid jet pump), the Hydromonitor (a jet mixer powered by a constant pressurized liquid source), and the Pulsating Monitor (a jet mixer powered by a reciprocating air supply). Performance testing and demonstrations of the Pulsating Pump (PP) and the Pulsating Monitor (PM) were conducted at the Pacific Northwest National Laboratory (PNNL) to determine the viability of the equipment for applications associated with waste retrieval in the U.S.Data related to the response of each system to various operating conditions were collected, reduced, and analyzed for various performance tests using waste tank slurry simulants.Measurements of the operating pressures for the PP and PM along with the mass flow rate and slurry density of the pumped waste stream were taken. The low-frequency oscillatory operation of the PP and PM resulted in steady state operating conditions that yielded time periodic data. Carem reduction and assessment of the data was necessary to select purely periodic data (indicative of proper pump operation) fkom which time-averaged parameters were calculated. The detailed assessment of the data allowed for the development of a physically meaningful correlation.A systematic analysis of the data provided a comprehensive understanding of the equipment operation as a whole and how its performance departs fkom ideal behavior. Observations of these departures led to suggestions for improvements in the efficiency and reliability of the system, and for the development of a proper monitoring and control system necessary for remote operation for U.S. applications. Both, the PP and PM show promise for application in the DOE tanks; however, there are significant technicddesign issues that need to be addressed before they are ready for deployment.... 111The advantages of using the PM and the PP for mobilizing and retrieving waste fiom underground storage tanks inclu...

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