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Effects of Tritium Gas Exposure on Polymers

E. A. Clark, E. B. Fox, M. C. Kane, G. C. Staack

Fusion Science and Technology / Volume 60 / Number 3 / October 2011 / Pages 1037-1040

Contamination and Waste / Proceedings of the Ninth International Conference on Tritium Science and Technology /

Effects of tritium gas exposure on various polymers have been studied over the last several years. Despite the deleterious effects of beta exposure on many material properties, structural polymers continued to be used in tritium systems. Improved understanding of the tritium effects will allow more resistant materials to be selected. Currently polymers find use mainly in tritium gas sealing applications (eg. valve stem tips, O-rings). Future uses being evaluated including polymeric based cracking of tritiated water, and polymer-based sensors of tritium.

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