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Abstract

The previous study of the dispersion of plutonium bearing aerosols during glove box fires on a laboratory scale focused on fires of polymethyl-methacrylate (PMMA - the major glove box construction material) whose surfaces were contaminated with cerium-europium oxide powder as a substitute for plutonium-uranium oxide. The study is completed with comparative fire experiments involving contaminated samples of various glove box materials burning in or exposed to the flames of the standardised 0.6 MW fire source previously developed. Beyond spreading of the Ce-Eu-oxide powder as mentioned above, the other important surface contamination process used is deposition and subsequent drying of droplets from acid cerium-europium solutions. It is shown that, among the tested materials, and with the exception of synthetic glove rubber, burning PMMA spreads the most radioactive contamination. On the other hand, this potential risk is much lower for fires involving materials contaminated from solution deposition than from powder or pellets. Attempts to measure the airborne contaminant particle sizes did not yield conclusive results. They suggest, however, that contamination from solutions leads to smaller heavy-metal containing aerosol particles than contamination with powders.

Additional information

Authors: BUIJS K, JRC Karlsruhe (DE);CHAVANE DE DALMASSY B, JRC Karlsruhe (DE);BAUMGÄRTNER E, JRC Karlsruhe (DE)
Bibliographic Reference: EUR 14494 EN (1992) 13 pp., FS, ECU 6
Availability: (2)
ISBN: ISBN 92-826-4915-6
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