Calibration of the RLS HPGe spectral gamma ray logging system
Technical Report
·
OSTI ID:5832160
Gamma-ray spectral data have been recorded with the Radionuclide Logging System (RLS) high purity germanium (HPGe) system at (1) the American Petroleum Institute (API) spectral gamma-ray calibration center in Houston, Texas; (2) the US Department of Energy (DOE) spectral gamma-ray field calibration facility in Spokane, Washington; and (3) the DOE spectral gamma-ray primary calibration center in Grand Junction, Colorado. Analyses of the Grand Junction data yielded: calibration constants for the natural gamma-ray sources (potassium, uranium and thorium), energy-dependent borehole diameter corrections for the aid-filled borehole, energy-dependent borehole casing corrections for steel casing over a range of thicknesses from 0 to 79 cm (5/16 in.), a casing index function that varies with casing thickness and provides a method for verifying that the correct casing correction is applied, and an energy-dependent inverse function that is the basis for assessment of subsurface concentrations of man-made gamma-ray emitters such as cesium-137 and cobalt-60.
- Research Organization:
- Westinghouse Hanford Co., Richland, WA (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-87RL10930
- OSTI ID:
- 5832160
- Report Number(s):
- WHC-EP-0464; ON: DE92006494
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
052000 -- Nuclear Fuels-- Waste Management
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
440400* -- Well Logging Instrumentation
47 OTHER INSTRUMENTATION
58 GEOSCIENCES
580000 -- Geosciences
BOREHOLES
CALIBRATION
CAVITIES
GAMMA LOGGING
GAMMA SPECTROMETERS
ISOTOPES
MEASURING INSTRUMENTS
NATURAL RADIOACTIVITY
RADIOACTIVITY
RADIOACTIVITY LOGGING
RADIOISOTOPES
SPECTROMETERS
WELL CASINGS
WELL LOGGING
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
440400* -- Well Logging Instrumentation
47 OTHER INSTRUMENTATION
58 GEOSCIENCES
580000 -- Geosciences
BOREHOLES
CALIBRATION
CAVITIES
GAMMA LOGGING
GAMMA SPECTROMETERS
ISOTOPES
MEASURING INSTRUMENTS
NATURAL RADIOACTIVITY
RADIOACTIVITY
RADIOACTIVITY LOGGING
RADIOISOTOPES
SPECTROMETERS
WELL CASINGS
WELL LOGGING