{"operation":"document","citation":"ERG 2024 Guide 168","title":"Guide 168: Carbon Monoxide (Refrigerated Liquid)","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 168: Carbon Monoxide (Refrigerated Liquid).","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-168.json","markdown":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-168.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-168","source_url":"https://www.phmsa.dot.gov/erg/guide?number=168","body":"GUIDE\n168\nCarbon Monoxide (Refrigerated Liquid)\nPOTENTIAL HAZARDS\nHEALTH\n•\nTOXIC; Extremely Hazardous.\n•\nInhalation extremely dangerous; may be fatal.\n•\nContact with gas, liquefied gas or cryogenic liquids may cause burns, severe injury and/or frostbite.\n•\nOdorless, will not be detected by sense of smell.\nFIRE OR EXPLOSION\n•\nEXTREMELY FLAMMABLE.\nCAUTION: Flame can be invisible. Use an alternate method of detection (thermal camera, broom\nhandle, etc.)\n•\nMay be ignited by heat, sparks or flames.\n•\nContainers may explode when heated.\n•\nVapor explosion and poison hazard indoors, outdoors or in sewers.\n•\nVapors from liquefied gas are initially heavier than air and spread along ground.\n•\nVapors may travel to source of ignition and flash back.\n•\nRunoff may create fire or explosion hazard.\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.\n•\n•\n•\n•\n•\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.\n•\nAlways wear thermal protective clothing when handling refrigerated/cryogenic liquids.\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 266\nERG 2024\n\nCarbon Monoxide (Refrigerated Liquid)\nGUIDE\n168\nEMERGENCY RESPONSE\nFIRE\nCAUTION: Flame can be invisible. Use an alternate method of detection (thermal camera, broom\nhandle, etc.)\n•\nDO NOT EXTINGUISH A LEAKING GAS FIRE UNLESS LEAK CAN BE STOPPED.\nSmall Fire\n•\nDry chemical, CO2 or water spray.\nLarge Fire\n•\nWater spray, fog or regular foam.\n•\nIf it can be done safely, move undamaged containers away from the area around the fire.\nFire Involving Tanks\n•\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.\nSPILL OR LEAK\n•\nELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.\n•\nAll equipment used when handling the product must be grounded.\n•\nDo not touch or walk through 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.\nFIRST AID\nRefer to the “General First Aid” section.\nSpecific First Aid:\n•\nIn case of contact with liquefied gas, only medical personnel should attempt thawing frosted parts.\nERG 2024\nPage 267","truncated":false,"body_characters":3806}