Exposure-rate calibration using large-area calibration pads
The US Department of Energy (DOE) Office of Remedial Action and Waste Technology established the Technical Measurements Center (TMC) at the DOE Grand Junction Projects Office (GJPO) in Grand Junction, Colorado, to standardize, calibrate, and compare measurements made in support of DOE remedial action programs. A set of large-area, radioelement-enriched concrete pads was constructed by the DOE in 1978 at the Walker Field Airport in Grand Junction for use as calibration standards for airborne gamma-ray spectrometer systems. The use of these pads was investigated by the TMC as potential calibration standards for portable scintillometers employed in measuring gamma-ray exposure rates at Uranium Mill Tailings Remedial Action (UMTRA) project sites. Data acquired on the pads using a pressurized ionization chamber (PIC) and three scintillometers are presented as an illustration of an instrumental calibration. Conclusions and recommended calibration procedures are discussed, based on the results of these data.
- Research Organization:
- UNC Geotech, Grand Junction, CO (USA)
- DOE Contract Number:
- AC07-86ID12584
- OSTI ID:
- 7056197
- Report Number(s):
- DOE/ID/12584-25; UNC/GJ-42(TMC); ON: DE89001068; TRN: 88-035548
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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AERIAL MONITORING
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REMEDIAL ACTION
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EVALUATION
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RADIOECOLOGICAL CONCENTRATION
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