US 4,058,479 A · Filter-lined container for hazardous solids

Abstract

Particulate radioactive wastes are packaged for storage until radioactivity decays by fastening a tight mesh fabric bag in a barrel or other suitable storage container, filling the bag with a mixture of radioactive waste material and a non-radioactive liquid material, and then solidifying the non-radioactive liquid to encapsulate the radioactive waste. The tight mesh weave of the fabric bag acts as a barrier to the particulate radioactive material but not to the liquid. A portion of the liquid thus flows through the bag to form a protective layer between the bag and outer container wall. The remainder stays in the bag and mixes with the radioactive particulate. Solidification of the non-radioactive liquid produces a monolithic solid having a protective layer of a solidified non-radioactive material covering the entire surface area of an immobilized mass of radioactively contaminated particulate material.

Claims10

Dependent claims

A package containing toxic solid material comprising:

outer wall means;
a layer of a material that is impervious to the solid toxic material but porous to a liquified immobilization material spaced at a predetermined distance from said wall means and substantially encompassing a preselected area within the package;
solid toxic material confined within said encompassed area by said impervious material;
and
a liquefiable immobilization material that will penetrate said layer when liquefied disposed both within said encompassed area in mixture with said solid toxic material, and also between said layer and said wall means to isolate said layer and said toxic material from said wall means.

2 more elements

A method of packaging solid toxic material comprising the steps of:

positioning at least one layer of a porous material that is impervious to the solid toxic material to be packaged a predetermined distance from the inside surface of a container, said layer substantially encompassing a preselected area within said container;
directing both a solid toxic material and a non-toxic liquid material into said encompassed area, said porous material acting as a barrier to said solid toxic material, said liquid material permeating said porous material to become disposed both within said encompassed area in mixture with said toxic material, and also between said porous material and said container;
and
solidifying said liquid material to form a solid package in which said toxic material is both immobilized and isolated from the walls of said container.

1 more element

Dependencies are inferred from the claim text.

Filter-lined container for hazardous solids

Life of this patent

Filter-lined container for hazardous solids

Life of this patent

Abstract

Claims10