Don't expose affected body parts to temperatures above 44☌ (112° F), such as a heater or a fire.Don't remove frozen gloves, shoes, or clothing.It is safest to do nothing except protecting the affected area with a loose cover and transporting the injured person to a medical facility. Treatment of frozen tissue requires medical supervision because incorrect first aid practices invariably aggravate the injury. Medical assistance for a cryogenic-induced injury should be obtained as soon as possible. If the body temperature is depressed, the patient must be warmed gradually to avoid shock and/or cardiac malfunctions.Įducation about the risks of cold injury as well as preventive and emergency care should be incorporated into training programs for operations and emergency response if liquid hydrogen will be used or stored at a site. Tissue becomes painful and turns pink or red upon thawing.Ĭardiac malfunctions are likely when the internal body temperature drops to 27☌ (80° F), and death may result when the internal body temperature drops to 25☌ (76° F). Evacuate immediately and call 911 for first responders and alert them to the potential presence of a liquid hydrogen release or spill.įrozen tissue is painless and appears yellow and waxy. Evaporating liquid hydrogen creates hydrogen gas with a high likelihood of a flammable or explosive mixture arising. Danger of freezing occurs when large amounts are spilled, and exposure is extensive.Īny person suffering from cryogenic or cold related injuries should be moved to a safe location only when this can be accomplished without endangering other people. Momentary contact with a small amount of the liquid may not pose as great a danger of a burn because a protective vapor film may form. Indoor Refueling of Hydrogen-Powered Industrial Trucksįirst-Aid Procedures for Cryogenic-Induced Injuriesĭirect physical contact with liquid hydrogen, cold vapor, or cold equipment can cause serious tissue damage.Gaseous (GH2) and Liquid Hydrogen (LH2) Fueling Stations.Chemical and Metal Hydride Hydrogen Storage.Small-Capacity Hydrogen Generators for Laboratory Use.Handling/Maintenance of Water Electrolysis Cell Stacks – Avoiding Electrical Discharge.
Compressed Gas Piping System Components.Working in Areas with Flammable Materials.First Aid Procedures for Cryogenic Induced Injuries.
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