Technology Survey to Support Revision to the Remedial Investigation/Feasibility Study Work Plan for the 200-SW-2 Operable Unit at the U.S. Department of Energy’s Hanford Site Page: 74 of 109
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Table 5.8. Lateral Distribution of Radioactivity: Non-Intrusive
Advantages/Disadvantages, Example Vendor/Reference
Technology General Description Effectiveness and Limitations Information
Global Positioning Utilizes a detection system, a portable computer, a differential Measurements are collected at a height of 3 ft and an DOE. 2001. Global Positioning
Radiometric global positioning system (d-gps), and a four-wheel drive optimal speed of 5 mph. This technology is only Radiometric Scanner System.
Scanner vehicle. Once the survey data has been collected, a software applicable to gamma-emitting radionuclides. DOE/EM-0541, Innovative
program called GeoSoft generates a graphical representation of Weather and soil conditions could affect the Technology Summary Report
the radiological contamination extent. measurements and the decontamination 2954, U.S. Department of
requirements. Benefits expected from using GPRS Energy, Office of Science and
include reduced labor hours associated with Technology, Washington, D.C.
performing the survey, increased number of survey Available at:
data points, real time, in situ radiological http://apps.em.doe.gov/OST/pub
measurements, and more accurate and reproducible s/itsrs/itsr2954.pdf
survey results. http://costperformance.org/monit
oring/pdf/gprs_2.pdf
In Situ Object Uses a cryogenically cooled high purity germanium crystal as May detect surface expression of buried source, but Canberra (www.canberra.com)
Counting System the detector for high resolution and high efficiency. This unlikely to detect radiation through existing http://www.canberra.com/Produc
(ISOCS) ganna-ray spectroscopy system identifies radioactive isotopes overburden. May work if overburden is decreased ts/709.asp
and provides real-time assays of the radioactive contents of to 1 to 2 ft. Has been deployed at F&H reactor fuel
containers, surfaces, and samples. The system provides storage basins for identification of fuel elements. Petersen et al. (2001) (BHI-
traditional spectra of counts as a function of gamma energy, Some use for environmental applications. 01484, Rev. 1)
which are then converted to radionuclide concentration using a
proprietary software system. The entire system is mounted on a
portable cart, which allows rotation of the detector about a
horizontal axis. The ISOCS does not produce an image.
Large Area Plastic The LAPS detector is composed of a 1.5-in.-thick by 3-in.-wide This technology has been successfully demonstrated DoD. 2000. ESTCP Cost and
Scintillation by 33-in.-long plastic scintillator detector that has been under the ESTCP program, including sites at Performance Report: In-Situ
(LAPS) Detector designed to detect greater than 300 kiloelectron volt (keV) beta Kirtland AFB and at Sandia National Laboratory. Radiation Detection
particles and greater than 40 keV gamma photons. The HHD Demonstration. CU-9915, U.S.
440A hand-held detector provides high voltage to the detector, Department of Defense,
data display, and data communication to a laptop computer. A Environmental Security
Motorola Global Positioning System (GPS) provides automatic Technology Certification
measurement and recording of positional data for the mobile Program, Arlington, Virginia.
unit. The laptop computer serves as a data logger for both the
detector count rate and the GPS positional data. A fixed-base
Motorola GPS operates simultaneously with the mobilev,
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Truex, Michael J.; Johnson, Christian D. & Nimmons, Michael J. Technology Survey to Support Revision to the Remedial Investigation/Feasibility Study Work Plan for the 200-SW-2 Operable Unit at the U.S. Department of Energy’s Hanford Site, report, September 25, 2007; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc894149/m1/74/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.