干旱区生态环境知识资源中心(Arid): Total-system performance assessment for Yucca Mountain -- SNL second iteration (TSPA-1993); Executive summary

Arid

DOI	10.2172/145192
报告编号	SAND--93-2675
来源ID	OSTI_ID: 145192
	Total-system performance assessment for Yucca Mountain -- SNL second iteration (TSPA-1993); Executive summary
	Wilson, M.L.; Barnard, R.W. [Sandia National Labs., Albuquerque, NM (United States)]; Gauthier, J.H. [Sandia National Labs., Albuquerque, NM (United States)]\|[Spectra Research, Inc. (United States)] [and others]
英文摘要	Sandia National Laboratories has completed the second iteration of the periodic total-system performance assessments (TSPA-93) for the Yucca Mountain Site Characterization Project (YMP). Scenarios describing expected conditions (aqueous and gaseous transport of contaminants) and low-probability events (human-intrusion drilling and volcanic intrusion) are modeled. The hydrologic processes modeled include estimates of the perturbations to ambient conditions caused by heating of the repository resulting from radioactive decay of the waste. TSPA-93 incorporates significant new detailed process modeling, including two- and three-dimensional modeling of thermal effects, groundwater flow in the saturated-zone aquifers, and gas flow in the unsaturated zone. Probabilistic analyses are performed for aqueous and gaseous flow and transport, human intrusion, and basaltic magmatic activity. Results of the calculations lead to a number of recommendations concerning studies related to site characterization. Primary among these are the recommendations to obtain better information on percolation flux at Yucca Mountain, on the presence or absence of flowing fractures, and on physical and chemical processes influencing gaseous flow. Near-field thermal and chemical processes, and waste-container degradation are also areas where additional investigations may reduce important uncertainties. Recommendations for repository and waste-package design studies are: (1) to evaluate the performance implications of large-size containers, and (2) to investigate in more detail the implications of high repository thermal power output on the adjacent host rock and on the spent fuel.
出版年	1994
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	05 NUCLEAR FUELS ; 54 ENVIRONMENTAL SCIENCES ; YUCCA MOUNTAIN ; RADIOACTIVE WASTE FACILITIES ; SITE CHARACTERIZATION ; HYDROLOGY ; FLOW MODELS ; ENVIRONMENTAL TRANSPORT ; REACTION HEAT ; CLIMATE MODELS ; WASTE FORMS ; RISK ASSESSMENT ; PROBABILISTIC ESTIMATION ; VOLCANISM ; INFORMATION NEEDS ; Yucca Mountain Project
URL	http://www.osti.gov/scitech/servlets/purl/145192
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/265588
推荐引用方式 GB/T 7714	Wilson, M.L.,Barnard, R.W. [Sandia National Labs., Albuquerque, NM ,Gauthier, J.H. [Sandia National Labs., Albuquerque, NM . Total-system performance assessment for Yucca Mountain -- SNL second iteration (TSPA-1993); Executive summary,1994.