Measurement of tritium permeation in flibe (2LiF•BeF2)
This paper reports on the experimental investigation of tritium permeation in flibe (2LiF-BeF2) at the Safety and Tritium Applied Research facility of the Idaho National Laboratory. A stainless steel cell formed by two independent volumes separated by a 2mm thick nickel membrane is maintained at temperatures between 500 and 700 degrees Celsius. A controlled amount of T2 gas is flown in excess of argon in the source volume in contact with the bottom side of the nickel membrane, while a layer of molten salt is in contact with the top side. The tritium permeating above the liquid surface is carried by an argon flow to a diagnostic system comprised of a quadrupole mass spectrometer, a gas chromatographer and a proportional counter. Tritium permeability in flibe as a function of temperature is determined by the measured permeation flow rates reached in steady-state conditions, while the diffusivity is determined by fitting the transient process with the analytical solution for the diffusion process. As a result, the solubility of tritium in flibe as a function of temperature is also determined.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- DOE - NE
- DOE Contract Number:
- DE-AC07-99ID-13727
- OSTI ID:
- 920416
- Report Number(s):
- INL/CON-07-13267; TRN: US0805568
- Resource Relation:
- Journal Volume: 83; Journal Issue: 7-9; Conference: ISNFT-8,Heildelberg, Germany,10/01/2007,10/05/2007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANALYTICAL SOLUTION
ARGON
DIFFUSION
FLIBE
FLOW RATE
MASS SPECTROMETERS
MEMBRANES
MOLTEN SALTS
NICKEL
PERMEABILITY
PROPORTIONAL COUNTERS
QUADRUPOLES
SAFETY
SOLUBILITY
STAINLESS STEELS
STEADY-STATE CONDITIONS
TRANSIENTS
TRITIUM
diffusivity
fusion
molten salt
solubility
tritium