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Extra info for Decontamination, Decommissioning of Nuclear Facilities (IAEA TECDOC-511)

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Development of Improved Technology for Decommissioning Operations, Proc. International Decommissioning Symp. Oct. p. V 22-24. PAVLIK 0. : Elektrohimiceszkaja dezaktivacija nodvizsnyimi katodami. COMECON Conf. on "Treatment of Radioactive Wastes" 1985 . Piestany , Czechoslovak! "P~^85/76. p. 390-395. /in Russian/ PAVLIK 0. - SIPOS T. : Decontamination of Nuclear Facilities by Electrochemical Methods International Decommissioning Symposium Pittsburg, 1987. Oct. 4-8. (Reports) 1. P. et al: Electropolishing as a Decontamination Process.

Since c a t i o n s can easily be built into metallic s u r f a c e , the r a d i o a c t i v e i s o t o p e s , fission and c o r r o s i o n p r o d u c t s , will be part of the s t r u c t u r a l m a t e r i a l s . On metallic surfaces decontamination can only be achived by the r e m o v a l of the upper layer of the metallic s u r f a c e containing the c o n t a m i n a n t s . S u c c e s s f u l decontamination r e m o v e s a l l c o n t a m i n a t i o n . 55 without excessive corrosion of the substrate.

The amount of rinsing water was between 20 and 30 l/m2. - Cold leg : The contamination of the samples was ranging between 25 and 40 Bq/cm2. 3 Bq/cm2. No significant difference was observed between the different cutting processes. 3 Bq/cm2. The basic gel had onfy a small decontamination factor but degrease the surface and improved the decontamination factor of the next acid step. 52 3 - FULL SIZE TESTS ON THE CIRCUIT Full size tests on the circuit started in sept. 1986 up to sept. 1987. Spraying the gel and rinsing was done by hand.

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