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Title: Understanding the Risk of Chloride Induced Stress Corrosion Cracking of Interim Storage Containers for the Dry Storage of Spent Nuclear Fuel: Evolution of Brine Chemistry on the Container Surface.

Although the susceptibility of austenitic stainless steels to chloride-induced stress corrosion cracking is well known, uncertainties exist in terms of the environmental conditions that exist on the surface of the storage containers. While a diversity of salts is present in atmospheric aerosols, many of these are not stable when placed onto a heated surface. Given that the surface temperature of any container storing spent nuclear fuel will be well above ambient, it is likely that salts deposited on its surface may decompose or degas. To characterize this effect, relevant single and multi-salt mixtures are being evaluated as a function of temperature and relative humidity to establish the rates of degassing, as well as the likely final salt and brine chemistries that will remain on the canister surface.
Authors:
;
Publication Date:
OSTI Identifier:
1328657
Report Number(s):
SAND--2015-8666C
607413; TRN: US1601927
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: NACE Corrosion 2016, Vancouver, BC (Canada), 6-10 Mar 2016
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; AUSTENITIC STEELS; SPENT FUEL STORAGE; DRY STORAGE; CRACKS; STRESS CORROSION; CHLORIDES; CONTAINERS; SURFACES; AEROSOLS; SALTS; BRINES; CHEMICAL REACTIONS; TIME DEPENDENCE; HAZARDS; HUMIDITY; MIXTURES; TEMPERATURE DEPENDENCE; DEGASSING; STAINLESS STEELS