Radon in Soil Gas Above Bedrock Fracture Sets at the Shepleyâs Hill Superfund Site

doi:10.2172/1070114

GSTDTAP > 地球科学

DOI	10.2172/1070114
报告编号	INL/EXT-12-27844
来源ID	OSTI ID: 1070114
	Radon in Soil Gas Above Bedrock Fracture Sets at the Shepleyâs Hill Superfund Site
	J.R. Giles; T.L. McLing; M.V. Carpenter; C.J. Smith; W. Brandon
	2012-12-01
出版年	2012
语种	英语
国家	美国
领域	地球科学
英文摘要	The Idaho National Laboratory (INL) recently provided technical support for ongoing environmental remediation activities at the Shepleyâs Hill remediation site near Devens, MA (Figure 1). The technical support was requested as follow-on work to an initial screening level radiation survey conducted in 2008. The purpose of the original study was to assess the efficacy of the INL-developed Backpack Sodium Iodide System (BaSIS) for detecting elevated areas of natural radioactivity due to the decay of radon-222 gases emanating from the underlying fracture sets. Although the results from the initial study were mixed, the BaSIS radiation surveys did confirm that exposed bedrock outcrops have higher natural radioactivity than the surficial soils, thus a high potential for detecting elevated levels of radon and/or radon daughter products. (INL 2009) The short count times associated with the BaSIS measurements limited the ability of the system to respond to elevated levels of radioactivity from a subsurface source, in this instance radon gas emanating from fracture sets. Thus, it was postulated that a different methodology be employed to directly detect the radon in the soil gases. The CR-39 particle track detectors were investigated through an extensive literature and technology search. The relatively long deployment or âdetectionâ time of several days, as well as the sensitivity of the measurement and robustness of the detectors made the CR-39 technology promising for deployment at the Shepleyâs Hill site.
英文关键词	Fracture Radon Soil Gas
URL	查看原文
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/5845
专题	地球科学
推荐引用方式 GB/T 7714	J.R. Giles,T.L. McLing,M.V. Carpenter,et al. Radon in Soil Gas Above Bedrock Fracture Sets at the Shepleyâs Hill Superfund Site,2012.