Tritium retention and removal on TFTR

Conference · Wed Oct 01 04:00:00 EDT 1997

OSTI ID:654354

Mueller, D; Blanchard, W ^[1]; Doyle, B L ^[2]

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1. Princeton Plasma Physics Lab., NJ (United States)
2. Sandia National Labs., Albuquerque, NM (United States); and others

Tritium retention and removal are critical issues for the success of ITER or any DT fusion reactor. The Tokamak Fusion Test Reactor, TFTR, is the first fusion facility to afford the opportunity to study the tritium retention and removal over an extended period. In TFTR, tritium accumulates on all surfaces with line of sight to the plasma by codeposition of tritium with carbon. Measurements of both deuterium and tritium retention fractions have yielded retention between 0.2 and 0.6 of the injected fuel in the torus. Tritium has been successfully removed from TFTR by glow discharge cleaning and by air purges. The in-vessel inventory was reduced by a factor of 2, facilitating machine maintenance. In TFTR, the amount of dust recovered from the TFTR vacuum vessel has varied from several grams to a few kilograms.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 654354
• Report Number(s): SAND--98-0899C; CONF-971065--; ON: DE98004672; BR: KC0201030
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CLEANING
DEPOSITION
INVENTORIES
RADIATION HAZARDS
REMOVAL
SAFETY
TFTR TOKAMAK
TRITIUM