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Title: Mechanistic analysis of double-shell tank gas release

Pacific Northwest Laboratory (PNL) is studying possible mechanisms and fluid dynamics contributing to the periodic release of gases from the double-shell waste storage tanks at Hanford. This study is being conducted for Westinghouse Hanford Company (WHC), a contractor for the US Department of Energy (DOE). This interim report discusses the work done through November 1990. Safe management of the wastes at Hanford depends on an understanding of the chemical and physical mechanisms that take place in the waste tanks. An example of the need to understand these mechanisms is tank 101-SY. The waste in this tank is generating and periodically releasing potentially flammable gases into the tank vent system according to observations of the tank. How these gases are generated and become trapped, the causes of periodic release, and the mechanism of the release are not known in detail. In order to develop a safe mitigation strategy, possible physical mechanisms for the periodic release of flammable gases need to be understood.
Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
5671477
Report Number(s):
PNL-7657
ON: DE92009029
DOE Contract Number:
AC06-76RL01830
Resource Type:
Technical Report
Research Org:
Pacific Northwest Lab., Richland, WA (United States)
Sponsoring Org:
DOE; USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 42 ENGINEERING; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HANFORD RESERVATION; TANKS; LIQUID WASTES; CHEMICAL COMPOSITION; PHYSICAL PROPERTIES; RADIOACTIVE WASTES; BUBBLES; CHEMICAL ANALYSIS; DATA ACQUISITION; FLAMMABILITY; FLOW RATE; FLUID FLOW; HEAT TRANSFER; HYDROGEN; HYDROSTATICS; MATHEMATICAL MODELS; MITIGATION; NATURAL CONVECTION; PRESSURE EFFECTS; PROGRESS REPORT; QUANTITY RATIO; RHEOLOGY; SAMPLING; SLURRIES; STRESSES; THERMAL CONDUCTIVITY; VOLUME; COMBUSTION PROPERTIES; CONTAINERS; CONVECTION; DISPERSIONS; DOCUMENT TYPES; ELEMENTS; ENERGY TRANSFER; MASS TRANSFER; MATERIALS; MIXTURES; NATIONAL ORGANIZATIONS; NONMETALS; RADIOACTIVE MATERIALS; SUSPENSIONS; THERMODYNAMIC PROPERTIES; US DOE; US ERDA; US ORGANIZATIONS; WASTES 052002* -- Nuclear Fuels-- Waste Disposal & Storage; 420400 -- Engineering-- Heat Transfer & Fluid Flow; 400800 -- Combustion, Pyrolysis, & High-Temperature Chemistry