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US 11,031,149 B1Granted
Nuclear abrasive slurry waste pump with backstop and macerator
AssigneeAGI Engineering, Inc.
InventorAlex Innes
Life of this patent
Estimating the term…
Abstract
Nuclear abrasive slurry waste pump systems, devices, and methods for retrieving waste materials and/or other material from storage tanks with liquefied tank material. The systems, devices and methods can work with tanks having high temperature conditions up to approximately 212 degrees Fahrenheit or low temperature conditions down to approximately 32 degrees Fahrenheit.
Claims20
A nuclear abrasive slurry waste pump system comprising:
- a submersible, multistage abrasive slurry pump assembly for fitting into an existing riser pipe in a waste tank;
- a hydraulically driven pump motor for high power density and for safe operation in areas with hazardous and explosive vapors;
- a suction inlet in the pump system to allow for establishing a prime;
- a suction strainer at the suction inlet for restricting particles from entering the pump system;
- one or more dilution lines to inject fluid at the suction inlet to reduce the percentage of solids in the waste liquid;
- an exterior hydraulic power unit in the pump system for providing pressures in a safe operating range between approximately 0 psi and approximately 500 psi;
- a pump seal housing located between the hydraulically driven pump motor and the multistage abrasive slurry pump assembly;
- and
- one or more drain windows or drain ports in the pump seal housing to carry any leakage of hazardous or contaminated fluid away from the pump seal housing and back into the waste tank.
6 more elements
A nuclear abrasive slurry waste pump system comprising:
- a submersible, multistage pump assembly for fitting into waste tank risers as small as approximately 12-inch in diameter;
- a hydraulically driven pump motor for high power density and for safe operation in areas with hazardous and explosive vapors;
- a suction strainer for restricting particles from entering the pump system;
- a suction inlet in the pump system to allow for establishing a prime;
- a macerator mounted to the suction inlet, to break down large particles from entering into the pump system;
- and
- a hydraulic power unit in the pump system for providing pressures in a safe operating range between approximately 0 psi and approximately 500 psi;
- a pump seal housing located between the pump motor and the multistage pump assembly;
- and
- one or more drain windows or drain ports in the pump seal housing to carry any leakage of hazardous or contaminated fluid away from the pump seal housing and back into a waste tank.
7 more elements
A nuclear abrasive slurry waste pump system comprising:
- a submersible, multistage pump assembly for fitting into existing risers in a waste tank;
- a hydraulically driven pump motor for high power density and for safe operation in areas with hazardous/explosive vapors;
- a suction inlet in the pump system for establishing a prime;
- a suction strainer for restricting particles from entering the pump system;
- a backstop assembly to be raised and lifted for cleaning inside the pump system;
- an exterior hydraulic power unit in the pump system for providing pressures in a safe operating range between approximately 0 psi and approximately 500 psi;
- a pump seal housing located between the pump motor and the multistage pump assembly;
- and
- one or more drain windows or drain ports in the pump seal housing to carry any leakage of hazardous or contaminated fluid away from the pump seal housing and back into the waste tank.
6 more elements
Dependencies are inferred from the claim text.