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AbstractAbstract
[en] Tritium decontamination from plasma facing materials is reviewed. The tritium inventory in JET was effectively removed by RF-heated and Ohmic pulsing and vessel venting, while D2 and He-O2 glow discharge and air purge were seen to be effective tritium removal techniques in TFTR. Fakes appeared at the carbon tiles of both JET diverters, and the TFTR bumper limiter contained large tritium concentrations. UV (laser) exposure and the use YAG lasers seem to be promising techniques for removing tritium from tiles. Although oxygen baking is presently the most effective way for removing tritium inventory in the shadow area of a diverter, the out-gases in pipes may generate some troublesome condensed matter by means of β-induced reaction. (author)
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Source
31 refs., 6 figs., 7 tabs.
Record Type
Journal Article
Journal
Purazuma, Kaku Yugo Gakkai-Shi; ISSN 0918-7928;
; v. 76(10); p. 1021-1028

Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CARBON COMPOUNDS, CLEANING, CLOSED PLASMA DEVICES, ELECTRIC DISCHARGES, ELECTRIC HEATING, ELECTROMAGNETIC RADIATION, HEATING, HYDROGEN ISOTOPES, INFRARED RADIATION, ISOTOPES, LIGHT NUCLEI, NUCLEI, ODD-EVEN NUCLEI, OXYGEN COMPOUNDS, PLASMA HEATING, RADIATIONS, RADIOISOTOPES, SPECTROSCOPY, THERMONUCLEAR DEVICES, TOKAMAK DEVICES, YEARS LIVING RADIOISOTOPES
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