KIT | KIT-Bibliothek | Impressum | Datenschutz

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


Verlagsausgabe §
DOI: 10.5445/IR/1000154515
Veröffentlicht am 13.01.2023
Originalveröffentlichung
DOI: 10.3390/jne4010001
Dimensions
Zitationen: 1
Cover der Publikation
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 Dimensions
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page