{"operation":"document","citation":"ERG 2024 Guide 124","title":"Guide 124: Gases - Toxic and/or Corrosive - Oxidizing","source_type":"guidance","agency":"U.S. DOT / Transport Canada / SICT","status":"guidance","official":true,"published_on":"2024-04-04","effective_on":null,"summary":"ERG2024 response Guide 124: Gases - Toxic and/or Corrosive - Oxidizing.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-124.json","markdown":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-124.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-124","source_url":"https://www.phmsa.dot.gov/erg/guide?number=124","body":"GUIDE\n124\nGases - Toxic and/or Corrosive -\nOxidizing\nPOTENTIAL HAZARDS\nHEALTH\n•\nTOXIC and/or CORROSIVE; may be fatal if inhaled or absorbed through skin.\n•\nFire will produce irritating, corrosive and/or toxic gases.\n•\nContact with gas or liquefied gas may cause burns, severe injury and/or frostbite.\n•\nRunoff from fire control or dilution water may cause environmental contamination.\nFIRE OR EXPLOSION\n•\nSubstance does not burn but will support combustion.\n•\nVapors from liquefied gas are initially heavier than air and spread along ground.\n•\nThese are strong oxidizers and will react vigorously or explosively with many materials including fuels.\n•\nMay ignite combustibles (wood, paper, oil, clothing, etc.).\n•\nSome will react violently with air, moist air and/or water.\n•\nCylinders exposed to fire may vent and release toxic and/or corrosive gas through pressure relief\ndevices.\n•\nContainers may explode when heated.\n•\nRuptured cylinders may rocket.\n•\n•\n•\n•\n•\nPUBLIC SAFETY\nCALL 911. Then call emergency response telephone number on shipping paper. If shipping paper\nnot available or no answer, refer to appropriate telephone number listed on the inside back cover.\nKeep unauthorized personnel away.\nStay upwind, uphill and/or upstream.\nMany gases are heavier than air and will spread along the ground and collect in low or confined areas\n(sewers, basements, tanks, etc.).\nVentilate closed spaces before entering, but only if properly trained and equipped.\nPROTECTIVE CLOTHING\n•\nWear positive pressure self-contained breathing apparatus (SCBA).\n•\nWear chemical protective clothing that is specifically recommended by the manufacturer when there is\nNO RISK OF FIRE.\n•\nStructural firefighters' protective clothing provides thermal protection but only limited chemical protection.\nEVACUATION\nImmediate precautionary measure\n•\nIsolate spill or leak area for at least 100 meters (330 feet) in all directions.\nSpill\n•\nSee Table 1 - Initial Isolation and Protective Action Distances.\nFire\n•\nIf tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all\ndirections; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.\nPage 178\nERG 2024\n\nGases - Toxic and/or Corrosive -\nOxidizing\nGUIDE\n124\nEMERGENCY RESPONSE\nFIRE\nCAUTION: These materials do not burn but will support combustion. Some will react violently with water.\nSmall Fire\n•\nContain fire and let burn. If fire must be fought, water spray or fog is recommended.\n•\nWater only; no dry chemical, CO2 or Halon®\n.\n•\nDo not get water inside containers.\n•\nIf it can be done safely, move undamaged containers away from the area around the fire.\n•\n•\nDamaged cylinders should be handled only by specialists.\nFire Involving Tanks\nFight fire from maximum distance or use unmanned master stream devices or monitor nozzles.\n•\nCool containers with flooding quantities of water until well after fire is out.\n•\nDo not direct water at source of leak or safety devices; icing may occur.\n•\nWithdraw immediately in case of rising sound from venting safety devices or discoloration of tank.\n•\nALWAYS stay away from tanks in direct contact with flames.\n•\nFor massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw\nfrom area and let fire burn.\nSPILL OR LEAK\n•\nDo not touch or walk through spilled material.\n•\nKeep combustibles (wood, paper, oil, etc.) away from spilled material.\n•\nStop leak if you can do it without risk.\n•\nUse water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled\nmaterial.\n•\nDo not direct water at spill or source of leak.\n•\nIf possible, turn leaking containers so that gas escapes rather than liquid.\n•\nPrevent entry into waterways, sewers, basements or confined areas.\n•\nIsolate area until gas has dispersed.\n•\nVentilate the area.\nFIRST AID\nRefer to the “General First Aid” section.\nSpecific First Aid:\n•\nClothing frozen to the skin should be thawed before being removed.\nIn Canada, an Emergency Response Assistance Plan (ERAP) may be required for this product.\nPlease consult the shipping paper and/or the \"ERAP\" section.\nERG 2024\nPage 179","truncated":false,"body_characters":4153}