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Two types of 235U/239Pu solid spikes for the assay of reprocessing plant input solutions are being studied at CBNM. Dried U/Pu nitrate spikes have been prepared from metallic reference materials, and uranium and plutonium concentrations and isotopic compositions have been certified (CBNM IRM-1027 a and b). Metallic U/Pu spikes are prepared by quantitative crucible-less alloying with quality control carried out by IDMS and by gamma counting on solid and dissolved samples. Consideration of IDMS error propagation shows that, for typical LWR input solutions, the optimum Pu/U+Pu ratio for CBNM solid spikes is 0.025 to 0.1.

Additional information

Authors: DE BIEVRE P, JRC Geel (BE);INGELBRECHT C, JRC Geel (BE);VERBRUGGEN A, JRC Geel (BE);OREA-ROCHA J M, JRC Geel (BE);BARRANDON J N, CNRS, Centre de Recherches Ernest-Babelon, Orléans (FR)
Bibliographic Reference: Paper presented: 13th ESARDA Symposium, Avignon (FR), May 14-16, 1991
Availability: Available from (1) as Paper EN 36202 ORA
Record Number: 199110842 / Last updated on: 1994-12-02
Original language: en
Available languages: en