HLW container corrosion in geological disposal conditions
The current concept for HLW disposal is to build a multibarrier system consisting of a slow leaching waste form, the waste container, backfilling materials and the geological formation. The main threat to the integrity of the container is aqueous corrosion. Two concepts are accepted, one based on a thin corrosion resistant overpack, the other on a thick corrosion allowance canister. Results of work carried out by the CEA is reported. One part concerns the corrosion resistant overpack concept and presents some results for the nickel-chromium alloys 625, C 276, C 4, and titanium 0.2% palladium alloy whose localized forms of corrosion have been studied in solutions representative of three possible host formations, (granite, salt domes, and clay). The second part concerns the corrosion allowance overpack concept and is mainly focused on the corrosion kinetics of mild steel in deaerated water. Some data on hydrogen embrittlement are also presented.
- Research Organization:
- Commissariat a l'Energie Atomique, Fontenay-aux-Roses, France
- OSTI ID:
- 5483597
- Report Number(s):
- CONF-850995-
- Journal Information:
- Mater. Res. Soc. Symp. Proc.; (United States), Vol. 50; Conference: Materials Research Society international symposium, Stockholm, Sweden, 9 Sep 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
A Salt Repository Concept for CSNF in 21-PWR Size Canisters
A Review of 25 Years of Corrosion Studies on HLW Container Materials at the CEA
Related Subjects
36 MATERIALS SCIENCE
CONTAINERS
CORROSION
HIGH-LEVEL RADIOACTIVE WASTES
BACKFILLING
RADIOACTIVE WASTE DISPOSAL
UNDERGROUND DISPOSAL
CHEMICAL REACTIONS
MANAGEMENT
MATERIALS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
360105 - Metals & Alloys- Corrosion & Erosion