Method of removing material from an interior surface using core/shell particles

This invention relates generally to methods for removing adherent materials, for example, undesirable residues, precipitates, scale and other materials from internal surfaces such as pipes and tanks, especially internal surfaces used to transport or deliver liquids in closed systems. In particular, the method employs an improved cleaning media comprising core/shell particles. This invention relates generally to methods for removing adherent materials, for example, residues, scale, contaminants, fouling, precipitates, and the like objectional materials from various internal surfaces of fluid transport or delivery systems and parts thereof. In particular, the method employs an improved media comprising core/shell particles. The media can be propelled against or along the surface by a fluid carrier to remove the unwanted surface material. In one embodiment, the media may be propelled by a liquid along a surface, such as the interior walls of a pipe, to remove undesirable adherent materials.