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Development and Basic Qualification Steps towards an Electrochemically Based H-Sensor for Lithium System Applications

Holstein, Nils; Krauss, Wolfgang; Nitti, Francesco Saverio

Abstract:

IFMIF-DONES, or the International Fusion Materials Irradiation Facility-DEMO Oriented Neutron Source, is a facility for investigations into foreseen fusion power plant materials using the relevant neutron irradiation of 14 MeV. This special n-irradiation is generated by the interaction of deuteron beams with liquid lithium. A critical issue during the operation of IFMIF-DONES is the enrichment of dissolved impurities in the Li-melt loops. The danger occurs as a result of hydrogen-induced corrosivity and embrittlement of the loop components, as well as the security hazards associated with the radioactive tritium. Hence, the application of liquid lithium in IFMIF-DONES requires a suitable impurity control system for reliable and low-level maintenance under the operating conditions of DONES. Regarding those requirements, an electrochemical sensor for hydrogen monitoring was developed in the frame of an international EUROFusion–WPENS task, to determine H-concentrations via the electro-motive force (EMF) of Li-melts and a suitable online-monitoring system. Long-term tests demonstrated that the sensor fulfills the requirements of chemical and mechanical stability and functionality under the harsh Li environment under the planned DONES conditions. ... mehr

Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 2673-4362
KITopen-ID: 1000154515
HGF-Programm 31.13.01 (POF IV, LK 01) Ex-Vessel Plant Systems & Engineering
Erschienen in Journal of Nuclear Engineering
Verlag MDPI
Band 4
Heft 1
Seiten 1–10
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 21.12.2022
Schlagwörter IFMIF-DONES; liquid lithium; electrochemical hydrogen sensor; lithium loop
Nachgewiesen in OpenAlex
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Verlagsausgabe §
DOI: 10.5445/IR/1000154515
Veröffentlicht am 13.01.2023
Originalveröffentlichung
DOI: 10.3390/jne4010001
Dimensions
Zitationen: 1
Seitenaufrufe: 83
seit 13.01.2023
Downloads: 58
seit 15.01.2023
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