A.N. Perevezentsev A.C. Bell B.M. Andreev M.B. Rozenkevich Yu. S. Pak A.V. Ovcharov
This paper evaluates detritiation of air contaminated with tritium in the form of water vapor using a scrubber column filled with structured packing. This technique is based on isotopic exchange between tritiated water vapor and liquid water. In combination with a catalytic oxidizer operated at room or slightly elevated temperature, the scrubber co…
PublishedA. N. Perevezentsev A. C. Bell
This paper presents results from the concept evaluation, experimental trials, and design of a water detritiation facility (WDF) for the JET fusion machine. The design is based on the combined electrolysis and catalytic exchange process and will allow construction of the plant and for its integration into the JET tritium plant in three stages. The f…
PublishedA. N. Perevezentsev A. C. Bell B. M. Andreev I. L. Selivanenko M. B. Rozenkevich
Several methods of decontamination, such as melting, heating with flame, isotopic exchange with gaseous hydrogen, replacement with hydrogen, and thermal desorption under moist gas, were tested on stainless steel, INCONEL, beryllium, copper, and aluminum bronze contaminated with tritium. The detritiation methods were assessed with respect to the fra…
PublishedA. N. Perevezentsev A. C. Bell B. M. Andreev I. L. Selivanenko M. B. Rozenkevich
The need to protect operators and to control the spread of contamination during Joint European Torus (JET) machine maintenance leads to the generation of soft housekeeping materials contaminated with tritium. These materials consist mostly of various plastics. A portion of the material falls into the category of intermediate-level waste and might n…
PublishedM. Rozenkevich B. Andreev E. Magomedbekov Yu. Park Yu. Sakharovsky A. Perevezentsev
Water detritiation facility based on CECE (Combined Electrolysis and Catalytic Exchange) technology needs an electrolyser for water conversion to hydrogen. Use of a conventional alkali electrolyser requires a very deep purification of hydrogen stream from alkali prior to injection to LPCE (Liquid Phase Catalytic Exchange) column. In some applicatio…
PublishedA. Perevezentsev A. Bell D. Brennan A. Miller A. Healer C. Gentile L. Ciebiera S. Langish
Operation with tritium plasma led to contamination of the JET in-vessel components with tritium at a level exceeding 12kBq/g, which is the Low Level Waste (LLW) threshold in the UK. Carbon tiles used at JET for protecting the pumped divertor and inner wall against heat and neutron flux create one of the Intermediate Level Waste (ILW) streams to dea…
Published