Sorption and desorption of tritiated water on paints

Conference · Sun Mar 01 04:00:00 EST 1992 · Fusion Technology; (United States)

OSTI ID:5129933

Ono, F; Tanaka, S; Yamawaki, M ^[1]

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1. Nuclear Engineering Research Lab., Univ., of Tokyo, Tokai, Ibaraki 319-11 (JP)

In this paper the sorption and desorption of tritiated water on paints, such as acryl, silicone, epoxy and fluorine types, has been studied. In dynamic adsorption and desorption experiments, tritium concentration in the chamber, in which painted metal was installed, was measured during HTO vapor charging or purging by N{sub 2} + H{sub 2}O. Slow desorption rate for acryl type was observed. Residual tritium not released by sweeping with N{sub 2} + H{sub 2}O was recovered by heating up to 800 C. Residual tritium fraction for epoxy type was found to be highest among tested. Paint membrane was used in permeation experiments of HTO vapor and liquid. Diffusivity, solubility and permeability were evaluated. Diffusivity for fluorine was largest and that for epoxy smallest.

• OSTI ID: 5129933
• Report Number(s): CONF-910920--
• Conference Information: Journal Name: Fusion Technology; (United States) Journal Volume: 21:2
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700480* -- Fusion Technology-- Component Development
ACRYLIC ACID
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBOXYLIC ACIDS
COATINGS
CONCENTRATION RATIO
DESORPTION
DIFFUSION
DISPERSIONS
ELEMENTS
EPOXIDES
FLUORINE
HALOGENS
HEAVY WATER
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MEMBRANES
METALS
MIXTURES
MONOCARBOXYLIC ACIDS
Ma
Materials Studies-- (1992-)
NITROGEN
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXYGEN COMPOUNDS
PAINTS
PERMEABILITY
POLYMERS
RADIOISOTOPES
SILICONES
SILOXANES
SOLUBILITY
SORPTION
TRITIUM
TRITIUM COMPOUNDS
WATER
YEARS LIVING RADIOISOTOPES