International Conference on Advancing the Global Implementation of Decommissioning and Environmental Remediation Programmes CN-238

Vehicle-Mounted Gamma Spectrometer for Radiological Land Surface Surveys

25 May 2016, 10:20

5m

Madrid

Oral Poster Technical and Technological Aspects of Implementing Environmental Remediation Programmes Session 4B - 1

Speaker

Mr William Millsap (Dade Moeller & Associates (US Dept. Energy))

Description

Abstract: A vehicle-mounted gamma spectrometer, Mobile Gamma Spectrometer (MGS), that is a practical solution for surface soil monitoring in rough, desert terrain is described. Surface soil scanning is applicable to land characterization, monitoring and clearance, all potential end-points of environmental remediation. The MGS is constructed, almost entirely, from proven commercially-available components and was successfully used to survey approximately 81 ha of desert for small areas of elevated radioactivity (hotspots). The results were compared against those from background areas and against a model hotspot that would contribute 20 µSv/y under an industrial scenario. Data processing was carried out with Mathematica 10, which includes strong list-processing and graphics capabilities, as well as a functional language for general mathematics. Two technicians can scan about 0.4 ha/hr. The system, with its light weight and wide tires, does minimal damage to the desert environment. (Note: Synopsis is attached.)