Part of the Advances in Cryogenic Engineering book series (ACRE, volume 7)
Electrostatic Hazards Assocated with the Transfer and Storage of Liquid Hydrogen
This paper summarizes the results of an experimental program to investigate the potential hazards of static charge generation and accumulation in well-grounded liquid-hydrogen storage and transfer systems. Results of previous investigations of hydrogen hazards indicate that, because of the very low ignition energy requirements and wide range of flammability for mixtures of hydrogen and air (or oxygen), extreme care must be taken to remove all possible ignition sources from hydrogen facilities. The elimination of static electricity as an ignition source, however, required, greater knowledge than was available concerning the conditions governing its occurrence in liquid-hydrogen service. Information was particularly needed about the following:
Potential charge build-up in storage tank and transfer equipment during the flow of liquid hydrogen.
Charge build-up during venting of boil-off gases from missile and storage tanks.
KeywordsStorage Tank Electrostatic Charge Liquid Hydrogen Ignition Source Faraday Cage
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