Tritium permeation through martensitic steel from Li17Pb83 in in-pile reactor experiments

Abstract

The work was devoted to development of the experimental unit for measurement and comparison of tritium permeation rates through bare and protected martensitic steel tubes. Both out-of-pile deuterium gas driven experiments and in-pile tritium permeation experiments were performed. The permeation reduction factor was estimated to be not less than 50 in both series. A few in-pile experiments of 6 h of duration each were performed in a high flux reactor. No degradation of the protection layer was observed for this period.