The Impurity Processing Loop for the JET Active Gas Handling Plant

J. L. Hemmerich; A. Dombra; C. Gordon; E. Groskopfs; A. Konstantellos

doi:dx.doi.org/10.13182/FST88-A25192

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The Impurity Processing Loop for the JET Active Gas Handling Plant

J. L. Hemmerich, A. Dombra, C. Gordon, E. Groskopfs, A. Konstantellos

Fusion Science and Technology / Volume 14 / Number 2P2A / September 1988 / Pages 557-561

Tritium Processing / Proceedings of the Third Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Toronto, Ontario, Canada, May 1-6, 1988) / dx.doi.org/10.13182/FST88-A25192

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The Impurity Processing Loop (IPL) of the JET Active Gas Handling System is designed to recover tritium from impurities such as tritiated water and hydrocarbons present in the JET plasma exhaust. All impurities are fully oxidised in a catalytic recombiner, the tritiated water frozen in a cold trap and subsequently decomposed on hot uranium powder. Hydrogen isotopes set free in this reaction are scavenged from the helium carrier gas in a cold uranium bed. The modular design of the IPL permits implementation of advanced processing schemes (eg avoiding solid UO₂ waste) in the future without major hardware modifications.