Materials selection and design of a hydrogen measurement device in Pb-17Li

A. Ciampichetti, I. Ricapito, G. Benamati, M. Zucchetti

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Abstract

In the helium cooled lithium lead (HCLL) and water cooled lithium lead (WCLL) blanket concepts for DEMO correct and reliable management of tritium is of basic importance, both for safety and fuel cycle reasons. To develop a sensor for measurements of hydrogen (and its isotopes) concentration in liquid Pb-17Li, a permeable capsule of niobium was chosen. Different simulations with a mathematical model have been performed, and then the sensor was designed, constructed and tested. The first experimental results in gas phase showed a permeating flux much lower than the predicted one, probably due to the formation of an oxide layer on the capsule surface or to the formation of niobium hydrides. To solve this problem different solutions are presented. © 2004 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1332 - 1336
Number of pages5
JournalJournal of Nuclear Materials
Volume329-333
Issue number1-3 PART B
DOIs
Publication statusPublished - 1 Aug 2004
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Ciampichetti, A., Ricapito, I., Benamati, G., & Zucchetti, M. (2004). Materials selection and design of a hydrogen measurement device in Pb-17Li. Journal of Nuclear Materials, 329-333(1-3 PART B), 1332 - 1336. https://doi.org/10.1016/j.jnucmat.2004.04.254