Status of Sandia HLW canister/overpack program studies
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
Similar Records
Materials for high-level waste canister/overpacks in salt formations
Materials for high-level waste canister/overpacks in salt formations
Related Subjects
36 MATERIALS SCIENCE
CASKS
MATERIALS
RADIOACTIVE WASTE DISPOSAL
HIGH-LEVEL RADIOACTIVE WASTES
TITANIUM ALLOYS
CORROSION RESISTANCE
ALLOYS
HYDROGEN
PITTING CORROSION
SALT DEPOSITS
STRESS CORROSION
CHEMICAL REACTIONS
CONTAINERS
CORROSION
ELEMENTS
GEOLOGIC DEPOSITS
MANAGEMENT
NONMETALS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
360105 - Metals & Alloys- Corrosion & Erosion