Design and fabrication of non-destructive assay standards
Conference
·
OSTI ID:370670
- Los Alamos National Lab., NM (United States)
Standards are needed to calibrate various NDA (Non-destructive Assay) instruments such as neutron coincidence counters, gamma-ray counters, and calorimeters. These instruments measure various ranges of nuclear material being produced in the DOE nuclear community. Los Alamos National Laboratory has taken a lead role in the fabrication of uranium and plutonium standards, along with other actinides such as neptunium and americium. These standards have been fabricated for several laboratories within the complex. This paper will summarize previous publications detailing the careful planning needed to fabricate standards. Planning encompasses components such as precise weighing, destructive analysis, and the use of post fabrication NDA measurements to confirm that the standards meet all preliminary expectations before use in instrument calibration. This paper will also describe the specialized containers, diluents, and the various amounts of nuclear materials needed to accommodate the calibration ranges of the instruments.
- OSTI ID:
- 370670
- Report Number(s):
- CONF-960376--
- Country of Publication:
- United States
- Language:
- English
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