Patent Number: 051788233
Section: claims

1. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material, including a pressurized cleaning liquid heating system for supplying a continuous flow of pressurized heated cleaning liquid to a remote cleaning tool which dispenses the pressurized cleaning liquid onto the surface to be decontaminated, wherein the improvement comprises; a) a first recovery unit comprising a single vacuum creating means and a final contaminated material disposal tank,  b) a second recovery unit providing a moisture laden contaminated material filter means for separating air borne contaminates from recovered cleaning liquids and for delivering said air borne contaminates to said disposal tank of said first recovery unit,  c) a collectable volume control provided by said second recovery unit for controlling the vacuum created by said first recovery unit when a critical mass of cleaning liquids is recovered by said second recovery unit,  d) a third recovery unit providing a vacuum activated contaminate collector interposed between said second recovery unit and a remote cleaning tool,  e) means within said collector providing a restricted area for collecting a predetermined volume of critical radioactive material,  f) means within said collector providing a critical mass control of the collected radioactive contaminated material with said means controlling the vacuum created by said first recovery unit when a critical mass of radioactive contaminates are recovered by said third recovery unit, and,  g) means providing vacuum induced communication between said collector and said second recovery unit. 2. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 1 wherein said collector of said third recovery unit includes a conically shaped hopper. 3. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 1 wherein said means within said collector is a reduced core member spaced from said collector so as to provide an internal restricted area within said collector for a predetermined volume of critical radioactive material. 4. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 1 wherein said means within said collector providing a critical mass control of the collected radioactive material comprises a vacuum cut- off ball member for disrupting the vacuum induced communication between said collector of said third recovery unit and said second recovery unit. 5. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 1 wherein said means providing vacuum induced communication with said collector and said second recovery unit is a hose. 6. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 2 wherein said means within said hopper is a reduced core member internally spaced from said hopper so as to provide a restricted area within said hopper for collecting a predetermined volume of critical radioactive material. 7. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 6 wherein said means within said hopper providing a critical mass control of the collected radioactive material comprises a vacuum cut- off ball member for disrupting the vacuum induced communication between said hopper of said third recovery unit and said second recovery unit. 8. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 6 wherein said means providing vacuum induced communication with said hopper and said second recovery unit is a hose. 9. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 1 wherein said collectable volume control provided by said second recovery unit is a float switch responsive to the volume of recovered cleaning liquids by said second recovery unit, with said float switch connected to and controlling the operation of said vacuum creating means of said first recovery unit. 10. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 9 wherein said collector of said third recovery unit is a conically shaped hopper. 11. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 9 wherein said means within said collector is a reduced core member spaced from said collector so as to provide an internal restricted area within said collector for a predetermined volume of critical radioactive material. 12. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 9 wherein said means within said collector providing a critical mass control of the collected radioactive material comprises a vacuum cut- off ball member for disrupting the vacuum induced communication between said collector of said third recovery unit and said second recovery unit. 13. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 10 wherein said means within said hopper is a reduced core member internally spaced from said hopper so as to provide a restricted area within said hopper for collecting a predetermined volume of critical radioactive material. 14. A decontaminating apparatus for cleaning radioactive contaminated surfaces and recovering for disposal the contaminated material as defined by claim 13 wherein said means within said hopper providing a critical mass control of the collected radioactive material comprises a vacuum cut- off ball member for disrupting the vacuum induced communication between said hopper of said third recovery unit and said second recovery unit.