Fuel pin welding is performed using the Tungsten Inert Gas (TIG) method in direct current mode. The welding torches are mounted in a chamber housed in a glovebox. Thus inert atmospheres are maintained and corrosion resistance of the welds in corrosive environments is guaranteed.
TIG is used in both direct and alternating current mode for the production of capsules. A further innovative feature of this activity is the specially designed chamber, which can be attached to a glove ring of any chamber (patent pending). In this design all expensive and motor driven units are positioned outside of the contamination region defined by the glovebox.
Welding techniques are used for the production of capsules with unique design and material composition, and for the tradition fuel pin geometries. Effort is placed on methods to hinder outer contamination of the products.