Seal welded cast iron nuclear waste container

Details Seal welded cast iron nuclear waste container Seal welded cast iron nuclear waste container

1986-09-16

1987-10-20

Shoap, Allan N.

Receptacles

Receptacle side wall made of two or more layers of material...

Beverage receptacle

148426, 220 75, 228193, 228196, 22826313, 22826314, 2505061, 403271, 428679, B65D 822

Patent

active

047008636

ABSTRACT:
This invention identifies methods and articles designed to circumvent metallurgical problems associated with hermetically closing an all cast iron nuclear waste package by welding. It involves welding nickel-carbon alloy inserts which are bonded to the mating plug and main body components of the package. The welding inserts might be bonded in place during casting of the package components. When the waste package closure weld is made, the most severe thermal effects of the process are restricted to the nickel-carbon insert material which is far better able to accommodate them than is cast iron. Use of nickel-carbon weld inserts should eliminate any need for pre-weld and post-weld heat treatments which are a problem to apply to nuclear waste packages. Although the waste package closure weld approach described results in a dissimilar metal combination, the relative surface area of nickel-to-iron, their electrochemical relationship, and the presence of graphite in both materials will act to prevent any galvanic corrosion problem.

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Huntington Alloys Handbook, published by the International Nickel Co., Inc. (1970), pp. 5, 24, 35.

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