A brief history of NDA at the IAEA.
Nearly 30 years ago, the first portable nondestructive assay instrument, a SAM-II, was brought to Vienna for IAEA consideration. This initial foray into the usage of nondestructive assay (NDA) as an independent assessment tool has materialized into one of the important tools for IAEA inspections. NDA instruments have several inherent advantages for inspectors; their measurements generate no radioactive waste, provide immediate answers, do not require specialized operators, and can be either taken to the items to be measured (portable instruments), or the items for measurement can be brought to the instruments, such as can be applied in on-site IAEA laboratories or off-site IAEA lab at Siebersdorf. The SAM-II was a small, lightweight, battery-powered, gamma-ray instrument used for uranium enrichment measurements. It was also found to be usehl for locating nuclear material, distinguishing between uranium and plutonium, and determining the active length of items like fuel pins. However it was not well suited for determining the amount of bulk material present, except for small containers of low-density materials. A 6-sided neutron coincidence counter, easily disassembled so it could be shipped and carried by airplane, was developed for bulk measurements of plutonium. The HLNCC (High Level Neutron Coincidence Counter) was immediately usefulmore »
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- Resource Type:
- Resource Relation:
- Conference: Presented at the Institute of Nuclear Materials Management 42nd Annual Meeting, Indian Wells, California, July 15-19, 2001.
- Research Org:
- Los Alamos National Laboratory
- Sponsoring Org:
- Country of Publication:
- United States
- 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; AUTOMATION; CONTAINERS; CONTAINMENT; FABRICATION; FUEL PINS; IAEA; IAEA SAFEGUARDS; ISOTOPE SEPARATION; MANPOWER; MONITORS; MULTIPLICITY; NEUTRONS; NUCLEAR MATERIALS MANAGEMENT; OXIDES; PLUTONIUM; PLUTONIUM OXIDES; RADIOACTIVE WASTES; REPROCESSING; URANIUM; WASTES
Enter terms in the toolbar above to search the full text of this document for pages containing specific keywords.