Patent Number: 047568526
Section: claims

1. A method of installing a vent in a nuclear waste storage container, which comprises the steps of: inserting a reversibly porous, air-diffusible, water-restrictive polymer plug, having an internal face, an external face, and a contact face connecting said internal face to said external face, a predetermined distance into a port formed in a wall of said container, said plug also provided with a means for securing said plug in said port, a means for sealing said contact face against a closed wall defined by said port in said wall of said container, and a means for receiving an insertion tool, located in an excess region of said plug adjacent said external face of said plug; and  removing said excess portion of said plug protruding from said container wall after said step of inserting is completed, making it difficult to tamper with said vent when installed and providing a minimal area of exposure of said plug above said wall, protecting said plug from damage by external forces.