DRYING PROCESS OF CANISTER LOADED WITH ECGs, BY SIMULTANEOUS INJECTION OF DRY AIR AND VACUUM

Claims

A canister drying process loaded with ECGs, by simultaneous injection of dry air and vacuum, comprising the following operations: a) canister drainage operation; b) canister and ECG drying operation performed by injecting hot dry air through one port of the canister and simultaneously generating a vacuum through the other port of the canister; c) canister and ECG drying verification operation; d) inert gas flooding operation; e) canister sealing operation; and f) leak testing operation; wherein operation a), with the canister partially submerged in the tank, involves circulating dry air through its interior, entering through the vent port and exiting through the drain port along with the water carried to the maneuvering tank; operation c) is performed by generating a vacuum of less than 3 mbar for 30 minutes, and is only completed if both conditions are maintained;Operation d) is performed by introducing an inert gas to an internal pressure of at least 1.1 bar for 30 minutes; operation e) is performed by removing the hoses along with the quick hydraulic couplings and welding the caps of both ports; operation f) is performed using a helium mass spectrometry technique. The inert gas used is helium. The spectrometry technique for operation f) is performed according to ANSI N14.5.