干旱区生态环境知识资源中心(Arid): Ferrocyanide safety program: An assessment of the possibility of ferrocyanide sludge dryout

Arid

DOI	10.2172/10189536
报告编号	WHC-EP--0816
来源ID	OSTI_ID: 10189536
	Ferrocyanide safety program: An assessment of the possibility of ferrocyanide sludge dryout
	Epstein, M.; Fauske, H.K. [Fauske and Associates, Inc., Burr Ridge, IL (United States)]; Dickinson, D.R.; Crippen, M.D.; McCormack, J.D.; Cash, R.J.; Meacham, J.E. [Westinghouse Hanford Co., Richland, WA (United States)]; Simmons, C.S. [Pacific Northwest Lab., Richland, WA (United States)]
英文摘要	Much attention has been focused on the Hanford Site radioactive waste storage tanks as a results of problems that have been envisioned for them. One problem is the potential chemical reaction between ferrocyanide precipitate particles and nitrates in the absence of water. This report addresses the question of whether dryout of a portion of ferrocyanide sludge would render it potentially reactive. Various sludge dryout mechanisms were examined to determine if any of them could occur. The mechanisms are: (1) bulk heating of the entire sludge inventory to its boiling point; (2) loss of liquid to the atmosphere via sludge surface evaporation; (3) local drying by boiling in a hot spot region; (4) sludge drainage through a leak in the tank wall; and (5) local drying by evaporation from a warm segment of surface sludge. From the simple analyses presented in this report and more detailed published analyses, it is evident that global loss of water from bulk heating of the sludge to its boiling point or from surface evaporation and vapor transport to the outside air is not credible. Also, from the analyses presented in this report and experimental and analytical work presented elsewhere, it is evident that formation of a dry local or global region of sludge as a result of tank leakage (draining of interstitial liquid) is not possible. Finally, and most importantly, it is concluded that formation of dry local regions in the ferrocyanide sludge by local hot spots or warm surface regions is not possible. The conclusion that local or global dryout is incredible is consistent with four decades of waste storage history, during which sludge temperature have gradually decreased or remained constant and the sludge moisture content has been retained. 54 refs.
出版年	1994
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 ; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS ; HANFORD RESERVATION ; RADIOACTIVE WASTE STORAGE ; SAFETY ANALYSIS ; SLUDGES ; DRYING ; FERROCYANIDES ; NITRATES ; CHEMICAL REACTIONS ; THERMAL CONDUCTIVITY ; MOISTURE ; EXPERIMENTAL DATA 052002 ; 054000 ; WASTE DISPOSAL AND STORAGE ; HEALTH AND SAFETY
URL	http://www.osti.gov/scitech/servlets/purl/10189536
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/265800
推荐引用方式 GB/T 7714	Epstein, M.,Fauske, H.K. [Fauske and Associates, Inc., Burr Ridge, IL ,Dickinson, D.R.,et al. Ferrocyanide safety program: An assessment of the possibility of ferrocyanide sludge dryout,1994.