Patent Number: 
Section: claims

1. A method for packaging of radioactive materials using a pool, a transportation and/or storage device having a safe containment area, a cleaning device having a cavity and a portion movable between an open position and a closed position, the cavity containing an activating agent therein, the method comprising:creating a vacuum in the cavity of a cleaning device to cause the portion of the cleaning device to be maintained in a closed position; mounting the cleaning device inside the safe containment area of the transportation and/or storage device; filling the safe containment area with water; placing the transportation and/or storage device in the pool;loading a radioactive material into the safe containment area;closing the transportation and/or storage device using at least one cover;extracting the transportation and/or storage device from the pool;draining the water inside the safe containment area;creating a pressure differential in the safe containment area to dry the safe containment area, wherein the pressure differential causes the cleaning device to automatically actuate from the closed position to the open position under the force of gravity; andexposing the activating agent to the safe containment area. 2. The method of claim 1, wherein the portion of the cleaning device moves automatically downward from the closed position to the open position when the pressure differential is at a value equal to or greater than a predetermined value. 3. The method of claim 1, wherein the portion of the cleaning device further comprises a first casing, the first casing positioned within a second casing of the cleaning device, the first casing coaxial with the second casing with respect to a longitudinal axis, wherein the first casing and the second casing are positioned to substantially overlap one another vertically when the cleaning device is in the closed position, the first casing at least partially positioned vertically below the second casing along the longitudinal axis when the cleaning device is in the open position. 4. The method of claim 3, wherein a holding device positioned between the first casing and the second casing maintains the first casing below the second casing a predetermined distance when the cleaning device is in the open position. 5. The method of claim 4, wherein the holding device further comprises a pin which slides within a hollow cylinder oriented along the central axis within the cleaning device, the pin having a shoulder which comes into contact with an abutment in the hollow cylinder to maintain the first casing at the predetermined distance below the second casing when the cleaning device is in the open position. 6. The method of claim 3, wherein a spring is coupled to the first and second casings and urge the cleaning device toward the closed position, wherein the spring forces the first casing to automatically move downward along the longitudinal axis from the closed position to the open position when the pressure differential is of a value equal to or greater than a predetermined value. 7. The method of claim 3, wherein the activating agent is positioned to move vertically downward with the first casing along the longitudinal axis. 8. The method of claim 7, wherein the first casing includes a closure plug with a cartridge arranged thereon; the activating agent is arranged in the cartridge and is not exposed to the safe containment area when the cleaning device is in the closed position. 9. The method of claim 7, wherein the activating agent includes a catalyst for recombining oxygen and hydrogen into water and a drying agent. 10. The method of claim 1, wherein the activating agent includes a catalyst for recombining oxygen and hydrogen into water and a drying agent.