9 June 2004 Gaseous hydrogen leakage optical fibre detection system
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Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566538
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain
Abstract
Liquid hydrogen has been intensively used in aerospace applications during the past forty years and is of great interest for fuel cells technologies and future automotive applications. Following upon major explosive risks due to the use of hydrogen in air, previous studies were carried out in our laboratory in order to develop optical fiber sensors for the detection of hydrogen leakage. This communication is aimed towards a prototype optical fiber system designed for the detection of gaseous hydrogen leakage near the conecting flanges of the liquid hydrogen pipes on the test bench of the engine Vulcain of the rocket ARIANE V. Depending on the configuration, the prototype sensor provides a two-level alarm signal and the detection of gaseous hydrogen leakage is possible for concentrations lower than the lower explosive limit in air (between 0.1 and 4%) with alarm response times lower than 10 seconds in a wide range of temperatures between -35°C and 300°C. The sensing principle based on palladium-hydrogen interaction is presented as well as the detection system composed of an optical fiber probe and an optoelectronic device.
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Alain Trouillet, Alain Trouillet, Colette Veillas, Colette Veillas, E. Sigronde, E. Sigronde, Henri Gagnaire, Henri Gagnaire, Michel Clement, Michel Clement, } "Gaseous hydrogen leakage optical fibre detection system", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566538; https://doi.org/10.1117/12.566538
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