Environmental sampling and analysis as a safeguards tool
Environmental sampling and radionuclide analysis of the resulting material can be utilized as a supplemental approach in safeguarding practices and particularly for detection of undeclared nuclear activities. The production of nuclear weapons could be pursued by uranium enrichment processes to produce highly enriched U-235 or by nuclear reactor operations followed by chemical separations to produce Pu-239. The application of either of these processes results in the production of signature materials, some of which will be released to the environs. Results from the operations of the Hanford production facilities are discussed and indicate the type of signatures that may be expected from plutonium production facilities. These include noble gas emissions from the reactors and chemical separations processes, the production of radionuclides in reactor cooling water followed by their subsequent release to the Columbia River, and the release of mildly contaminated process water from the chemical processing facilities. These signature materials are carried by both gaseous and liqid effluents and enter various compartments of the environment. The types of signature materials which are most likely to be accumulated are discussed, together with examples of the quantities which have been released during past separations. There are numerous processes by which natural uranium may be enriched to produce highly enriched U-235. The most definitive signature of such processes is always a modification in uranium isotope ratios, and materials showing either enriched or depleted uranium in gaseous and liquid effluents provide the best indication that uramium enrichment processes are taking place. Therefore, techniques for sampling and analysis of airborne, waterborne, or deposited uranium in environmental matrices provide a means of detecting uranium enrichment which may lead to proliferation products.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 139483
- Report Number(s):
- PNL-SA-22129; CONF-9303158-2; CONF-940307-30; ON: DE93018873; TRN: 93:019952
- Resource Relation:
- Conference: International Atomic Energy Agency (IAEA) consultant`s meeting, Vienna (Austria); Vienna (Austria), 30 Mar - 2 Apr 1993; 14-18 Mar 1994; Other Information: PBD: Mar 1994
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
35 ARMS CONTROL
NUCLEAR WEAPONS
PROLIFERATION
RADIOACTIVE EFFLUENTS
DETECTION
PLUTONIUM 239
ISOTOPE PRODUCTION
URANIUM 235 TARGET
IRRADIATION
THORIUM 232 TARGET
URANIUM 233
TRITIUM
FUEL REPROCESSING PLANTS
GASEOUS WASTES
LIQUID WASTES
SAMPLING
CHEMICAL ANALYSIS
ENVIRONMENTAL MATERIALS
COMPILED DATA