Feasibility of direct reactivity measurement in multi-canister overpacks at the Cold Vacuum Drying Facility | Zendy

R.G. Cowan | Zendy

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Feasibility of direct reactivity measurement in multi-canister overpacks at the Cold Vacuum Drying Facility

Author(s) -

R.G. Cowan

Publication year - 1997

Language(s) - English

Resource type - Reports

DOI - 10.2172/344977

Subject(s) - nuclear engineering , helium , reactivity (psychology) , volumetric flow rate , materials science , yield (engineering) , hydrogen , analytical chemistry (journal) , chemistry , reaction rate , thermodynamics , composite material , chromatography , physics , engineering , medicine , biochemistry , alternative medicine , organic chemistry , pathology , catalysis

A proposed method for measuring the chemical reaction rate (power) of breached N-Reactor fuel elements with water in a Multi-canister overpack (MCO) based on hydrogen release rate is evaluated. The reaction rate is measured at 50 C in an oxygen free water by applying a vacuum to boil the water and adding a low, measured flow of helium. The ratio of helium to hydrogen is used to infer the reaction rate. A test duration of less than 8 hours was found to provide sufficient accuracy for confidence in the measurement results. A more rigorous treatment of system measurement accuracy, which may yield shorter test durations, should be performed if this reactivity measurement is to be employed

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