干旱区生态环境知识资源中心(Arid): Risk-based screening analysis of ground water contaminated by radionuclides introduced at the Nevada Test Site (NTS)

Arid

DOI	10.2172/138660
报告编号	UCRL-ID--112789
来源ID	OSTI_ID: 138660
	Risk-based screening analysis of ground water contaminated by radionuclides introduced at the Nevada Test Site (NTS)
	Daniels, J.I.; Anspaugh, L.R. [Lawrence Livermore National Lab., CA (US)]; Andricevic, R.; Jacobson, R.L. [Nevada Univ., Las Vegas, NV (US). Desert Research Inst.]
英文摘要	The Nevada Test Site (NTS) is located in the southwestern part of Nevada, about 105 km (65 mi) northwest of the city of Las Vegas. Underground tests of nuclear weapons devices have been conducted at the NTS since late 1962 and ground water beneath the NTS has been contaminated with radionuclides produced by these tests. This concern prompted this examination of the potential health risk to these individuals from drinking the contaminated ground water either at a location on the NTS (assuming loss of institutional control after 100 y) or at one offsite (considering groundwater migration). For the purpose of this assessment, a representative mix of the radionuclides of importance and their concentrations in ground water beneath the NTS were identified from measurements of radionuclide concentrations in groundwater samples-of-opportunity collected at the NTS. Transport of radionuclide-contaminated ground water offsite was evaluated using a travel-time-transport approach. At both locations of interest, potential human-health risk was calculated for an individual ingesting radionuclide-contaminated ground water over the course of a 70-y lifetime. Uncertainties about human physiological attributes, as well as about estimates of physical detriment per unit of radioactive material, were quantified and incorporated into the estimates of risk. The maximum potential excess lifetime risk of cancer mortality estimated for an individual at the offsite location ranges from 7 {times} 10{sup {minus}7} to 1 {times} 10{sup {minus}5}, and at the onsite location ranges from 3 {times} 10{sup {minus}3} to 2 {times} 10{sup {minus}2}. Both the offsite and the onsite estimates of risk are dominated by the lifetime doses from tritium. For the assessment of radionuclides in ground water, the critical uncertainty is their concentration today under the entire NTS.
出版年	1993
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 ; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES ; NEVADA TEST SITE ; RADIOACTIVE WASTE MANAGEMENT ; GROUND WATER ; CONTAMINATION ; NEOPLASMS ; RADIOINDUCTION ; RADIOECOLOGICAL CONCENTRATION ; RADIONUCLIDE MIGRATION ; RISK ASSESSMENT ; RADIATION MONITORING ; DRINKING WATER ; INTAKE ; RADIATION DOSES ; Yucca Mountain Project
URL	http://www.osti.gov/scitech/servlets/purl/138660
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/265157
推荐引用方式 GB/T 7714	Daniels, J.I.,Anspaugh, L.R. [Lawrence Livermore National Lab., CA ,Andricevic, R.,et al. Risk-based screening analysis of ground water contaminated by radionuclides introduced at the Nevada Test Site (NTS),1993.