The JET active gas handling system : Progress reportFunded under: FP1-FUSION 9C
The JET Active Gas Handling System is designed to process mixtures of hydrogen isotopes, helium and impurities during the operation of the JET tokamak with deuterium/tritium plasmas. The main subsystems of this plant are : - cryogenic forevacuum system (CF) - mechanical forevacuum system (MF) - exhaust detritiation system (ED) - impurity processing loop (IP) - intermediate and product storage (IS,PS) - cryodistillation isotope separation (CD) - gaschromatographic isotope separation (GC) Elements of crucial importance for plant operation have been built as prototypes and test results are reported for the following subsystems: - CF : Accumulation panel pumping speed and impurity separation in cryotransfer pump. - IP, IS, PS : Uranium beds for hydrogen storage and recovery of tritium from tritiated water; iron bed for water decomposition (regenerable). - CD : A novel recirculation pump for hydrogen isotope mixtures utilising the surface tension of liquid hydrogen in a porous wall. - GC : A new method to diagnose the arrival of an isotopic transition inside the column packing on the basis of difference in reaction enthalpies of the various isotopes, leading to characteristic temperature changes. - General components : valves, valve actuators and all-metal, tritium compatible upstream and downstream pressure regulators.
Bibliographic Reference: Report: JET-P(88)63 EN (1988)
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 198910674 / Last updated on: 1994-12-01
Original language: en
Available languages: en