![]() ![]() Use a first-in, first-out inventory system to prevent full containers from being stored for long periods of time.ĭo not “crack” hydrogen cylinder valve before connecting it, since self-ignition may occur. Full and empty cylinders should be segregated. high having a fire resistance rating of at least ½ hour. Cylinders of hydrogen should be separated from oxygen cylinders or other oxidizers by a minimum distance of 20 ft., or by a barrier of non-combustible material at least 5 ft. Cylinders should never knowingly be allowed to reach a temperature exceeding 125☏ (52☌). Cylinder storage locations should be well-protected, well-ventilated, dry, and separated from combustible materials. Specific requirements are listed in NFPA 50A. Never enter a confined space or other area where the concentration is greater than 10% of the lower flammable limit which is 0.4%. The presence of a hydrogen flame can be detected by approaching cautiously with an outstretched straw broom to make the flame visible. If leaking from cylinder, or valve, contact your supplier. Shut off source of hydrogen, if possible. Eliminate any possible sources of ignition, and provide maximum explosion-proof ventilation. Sensitivity To Static Discharge: Ignitable by static electricityĮvacuate immediate area. Stop flow of gas if without risk while continuing cooling water spray. If flames are accidentally extinguished, explosive re-ignition may occur. Immediately cool container with water spray from maximum distance, taking care not to extinguish flames. Do not extinguish until hydrogen source is shut off.Įvacuate all personnel from danger area. Get immediate medical attention.ĬO2, dry chemical, water spray or fog for surrounding area. If not breathing, give artificial respiration. Lack of sufficient oxygen may cause serious injury or death. ![]() Exposure to atmospheres containing 8-10% or less oxygen will bring about unconsciousness without warning, and so quickly that the individuals cannot help or protect themselves. ![]() Exposure to moderate concentrations may cause dizziness, headache, nausea and unconsciousness. It should be noted that before suffocation could occur, the lower flammability limit of hydrogen in air would be exceeded possibly causing both an explosive and oxygen-deficient atmosphere. Flammable, High Pressure Gas Can form explosive mixtures with air Burns with an invisible flame.Īsphyxiant. ![]()
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