干旱区生态环境知识资源中心(Arid): Model assessment of protective barrier designs

Arid

DOI	10.2172/6475440
报告编号	PNL-5604
来源ID	OSTI_ID: 6475440
	Model assessment of protective barrier designs
	Fayer, M.J.; Conbere, W.; Heller, P.R.; Gee, G.W.
英文摘要	A protective barrier is being considered for use at the Hanford site to enhance the isolation of previously disposed radioactive wastes from infiltrating water, and plant and animal intrusion. This study is part of a research and development effort to design barriers and evaluate their performance in preventing drainage. A fine-textured soil (the Composite) was located on the Hanford site in sufficient quantity for use as the top layer of the protective barrier. A number of simulations were performed by Pacific Northwest Laboratory to analyze different designs of the barrier using the Composite soil as well as the finer-textured Ritzville silt loam and a slightly coarser soil (Coarse). Design variations included two rainfall rates (16.0 and 30.1 cm/y), the presence of plants, gravel mixed into the surface of the topsoil, an impermeable boundary under the topsoil, and moving the waste form from 10 to 20 m from the barrier edge. The final decision to use barriers for enhanced isolation of previously disposed wastes will be subject to decisions resulting from the completion of the Hanford Defense Waste Environmental Impact Statement, which addresses disposal of Hanford defense high-level and transuranic wastes. The one-dimensional simulation results indicate that each of the three soils, when used as the top layer of the protective barrier, can prevent drainage provided plants are present. Gravel amendments to the upper 30 cm of soil (without plants) reduced evaporation and allowed more water to drain.
出版年	1985
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; 54 ENVIRONMENTAL SCIENCES ; COVERINGS ; DESIGN ; RADIOACTIVE WASTE DISPOSAL ; DRAINAGE ; HANFORD RESERVATION ; PLANTS ; SIMULATION ; SOILS ; SPECIFICATIONS ; UNDERGROUND DISPOSAL ; WATER ; HYDROGEN COMPOUNDS ; MANAGEMENT ; NATIONAL ORGANIZATIONS ; OXYGEN COMPOUNDS ; US DOE ; US ERDA ; US ORGANIZATIONS ; WASTE DISPOSAL ; WASTE MANAGEMENT 052002* -- Nuclear Fuels-- Waste Disposal & Storage ; 510301 -- Environment, Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
URL	http://www.osti.gov/scitech/servlets/purl/6475440
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/263766
推荐引用方式 GB/T 7714	Fayer, M.J.,Conbere, W.,Heller, P.R.,et al. Model assessment of protective barrier designs,1985.