Status of Sandia HLW canister/overpack program studies

Conference · Tue Jan 01 00:00:00 EST 1980

OSTI ID:6780984

Molecke, M. A.; Abrego, L.

The focus of the Sandia program has been to identify an extended life alloy suitable as an overpack surrounding an HLW canister. The function of the overpack, which may be only millimeters thick, is corrosion resistance, not support strength. Laboratory and hot-cell tests are being used to measure the corrosion rates and assess the metallurgical behavior of selected engineered barrier materials. Field and in situ tests and demonstrations are in the planning stage. Recent experimental results are reviewed, and the status of the various phases of this program are described. Several candidate alloys have been examined for corrosion behavior under environmental conditions typical of a salt repository. The prime candidate for long-lived overpacks, TiCode-12, has not been disqualified by any of the tests and overtests conducted in our investigations. However further testing of potential failure mechanisms are being evaluated before final material selection is made. Nickel-based and lower-cost alloys will also be examined. This program will culminate with large-scale overpack fabrication demonstrations and field testing in salt.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6780984
• Report Number(s): SAND-80-2191C; CONF-801209-5; TRN: 80-019217
• Resource Relation: Conference: 2. annual National Waste Terminal Storage (NWTS) information meeting, Columbus, OH, USA, 9 Dec 1980
• Country of Publication: United States
• Language: English

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36 MATERIALS SCIENCE
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