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The Hanford site contains approximately 55 million gallons of radioactive and chemically hazardous wastes arising from weapons production. This paper will present a Bayesian framework to model the probability of tank failures at Hanford and illustrate its use for tanks that are already known to have failed and leaked waste.
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The Hanford Site in Richland, WA stores liquid radioactive waste in underground, carbon steel tanks. Electrochemical corrosion testing was performed to determine new limits that optimize the chemistry control, yet are robust enough to inhibit against the possibility of increased concentrations of aggressive species.
Nuclear wastes are stored in large, underground carbon-steel storage tanks at the Hanford site. Carbon steels can become susceptible to localized corrosion. This paper presents the results of ongoing electrochemical investigations to understand the reasons behind the noble drift in the OCP of carbon steel in these waste simulants.
Cyclic potentiodynamic polarization tests were performed with statistically designed compositional test matrices to determine and optimize the nitrite inhibitor requirements needed to safely store and process the return stream in waste tanks.
Electrochemical testing was utilized determine the borderline conditions for pitting to optimize the chemistry control program for underground double shell tanks containing liquid radioactive waste.
Nuclear wastes are stored in large, underground carbon steel storage tanks. Carbon steels can be susceptible to localized corrosion (e.g., pitting) and stress corrosion cracking (SCC). This paper presents work done to evaluate changes in SCC susceptibility over time.
Large underground, carbon steel tanks are used for interim storage of liquid radioactive waste. The current corrosion control program needs to be updated to account for the susceptibility to pitting corrosion of waste tanks due to the halide content of the secondary waste.