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With the extremely low minimum ignition energy (MIE) of Hydrogen, is it best to basically consider it as pyrophoric?

Because hydrogen leaks frequently ignite, and because about half the time the ignition source is not identified, when evaluating hazards with hydrogen leaks, many people just assume the leak will be ignited. Note that consideration needs to be made for what may happen with immediate ignition (jet fire) and what may happen with delayed ignition (explosion). 

It is still important to minimize the probability of ignition and to minimize the consequences if it does ignite. We do that by properly characterizing hydrogen with all its unique properties, including flammability and low MIE, and by providing the appropriate safeguards prescribed by codes and standards specific to hydrogen. These safeguards include minimum quantities, using proper materials of construction, leak prevention practices, proper ventilation, proper disposal to safe areas, and ignition source control such as the use of non-sparking, electrical grounding, and classified electrical equipment.

Category
Miscellaneous
Keywords
Ignition
Delayed Ignition
Prevention
Minimum Ignition Energy (MIE)
Submission Year
2023
Month
09
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