Simultaneous Thermal Analysis of WIPP and LANL Waste Drum Samples: A Preliminary Report

doi:10.2172/1223774

GSTDTAP > 地球科学

DOI	10.2172/1223774
报告编号	LA-UR--15-28116
来源ID	OSTI ID: 1223774
	Simultaneous Thermal Analysis of WIPP and LANL Waste Drum Samples: A Preliminary Report
	Wayne, David M.
	2015-10-19
出版年	2015
页数	34
语种	英语
国家	美国
领域	地球科学
英文摘要	On Friday, February 14, 2014, an incident in P7R7 of the WIPP underground repository released radioactive material into the environment. The direct cause of the event was a breached transuranic (TRU) waste container, subsequently identified as Drum 68660. Photographic and other evidence indicates that the breach of 68660 was caused by an exothermic event. Subsequent investigations (Britt, 2015; Clark and Funk, 2015; Wilson et al., 2015; Clark, 2015) indicate that the combination of nitrate salts, pH neutralizing chemicals, and organic-based adsorbent represented a potentially energetic mixture. The materials inside the breached steel drum consisted of remediated, 30- to 40-year old, Pu processing wastes from LANL. The contents were processed and repackaged in 2014. Processing activities at LANL included: 1) neutralization of acidic liquid contents, 2) sorption of the neutralized liquid, and 3) mixing of acidic nitrate salts with an absorber to meet waste acceptance criteria. The contents of 68660 and its sibling, 68685, were derived from the same parent drum, S855793. Drum S855793 originally contained ten plastic bags of acidic nitrate salts, and four bags of mixed nitrate and oxalate salts generated in 1985 by Pu recovery operations. These salts were predominantly oxalic acid, hydrated nitrate salts of Mg, Ca, and Fe, anhydrous Na(NO₃), and minor amounts of anhydrous and hydrous nitrate salts of Pb, Al, K, Cr, and Ni. Other major components include sorbed water, nitric acid, dissolved nitrates, an absorbent (Swheat ScoopÂŽ) and a neutralizer (KolorSafeÂŽ). The contents of 68660 are described in greater detail in Appendix E of Wilson et al. (2015)
英文关键词	thermogravimetric analysis, TGA, differential scanning calorimetry, DSC, mass spectrometry, offgas, exothermic, combustion, nitrate salts
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/7044
专题	地球科学
推荐引用方式 GB/T 7714	Wayne, David M.. Simultaneous Thermal Analysis of WIPP and LANL Waste Drum Samples: A Preliminary Report,2015.