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首页> 美国政府科技报告 >Application of the Ultrasonic Ranging and Data System (USRADS) as a verification tool.
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Application of the Ultrasonic Ranging and Data System (USRADS) as a verification tool.

机译：超声波测距和数据系统（UsRaDs）作为验证工具的应用。

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The Ultrasonic Ranging and Data System (USRADS) is a computerized data collection system that enables the correlation between geographic location and data gathered at that location. The USRADS employs ultrasonics, radio frequency transmission, and microcomputers to gather data for site characterization. In the case of a radiological survey, radiation measurements are gathered to confirm that remedial action has successfully removed contamination to levels below applicable guidelines or standards. The Pollutant Assessments Group of Oak Ridge National Laboratory (ORNL), Grand Junction, Colorado, was directed by the Department of Energy (DOE) to verify the adequacy of remedial action taken at various sites throughout the western United States. The USRADS was utilized at the Monticello Remedial Action Program, a National Priorities List site in Monticello, Utah, following remedial action of approximately 15 cm of soil contaminated by wind-dispersed uranium mill tailings. The verification was conducted in a 15,300 square meter property that resides on the periphery of the mill site and was vacant land. Remedial action at this location was conducted to bring the site's radiation levels below those specified in 40 CFR 192. The radiological verification survey was conducted following excavation of the contaminated material. The USRADS was configured with a Victoreen gamma scintillometer and was operated by a two-man survey team. There are several advantages to verifying with the USRADS over conventional gamma radiation survey methods. First, survey coverage can be instantly verified, allowing the survey team to confirm complete survey coverage. Second, the data may be analyzed on site, enabling the team to identify areas of elevated gamma radiation exposure rates and to select biased sample locations. Finally, the USRADS provides both high quality graphical illustrations for permanent documentation and data storage that can be easily retrieved for site certification.

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