{"operation":"document","citation":"ERG 2024 Guide 156","title":"Guide 156: Substances - Toxic and/or Corrosive (Combustible/Water-Sensitive)","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 156: Substances - Toxic and/or Corrosive (Combustible/Water-Sensitive).","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-156.json","markdown":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-156.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-156","source_url":"https://www.phmsa.dot.gov/erg/guide?number=156","body":"GUIDE\n156\nSubstances - Toxic and/or Corrosive\n(Combustible/Water-Sensitive)\nPOTENTIAL HAZARDS\nFIRE OR EXPLOSION\n•\nCombustible material: may burn but does not ignite readily.\n•\nSubstance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff.\n•\nWhen heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion\nhazards.\n•\nMost vapors are heavier than air. They will spread along the ground and collect in low or confined areas\n(sewers, basements, tanks, etc.).\n•\nVapors may travel to source of ignition and flash back.\n•\nCorrosives in contact with metals may evolve flammable hydrogen gas.\n•\nContainers may explode when heated or if contaminated with water.\n•\n•\n•\n•\n•\n•\nHEALTH\nTOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance\nmay cause severe injury, burns or death.\nContact with molten substance may cause severe burns to skin and eyes.\nReaction with water or moist air may release toxic, corrosive or flammable gases.\nReaction with water may generate much heat that will increase the concentration of fumes in the air.\nFire will produce irritating, corrosive and/or toxic gases.\nRunoff from fire control or dilution water may be corrosive and/or toxic and cause environmental\ncontamination.\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.\nVentilate closed spaces before entering, but only if properly trained and equipped.\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.\nEVACUATION\nImmediate precautionary measure\n•\nIsolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters\n(75 feet) for solids.\nSpill\n•\n•\nFor highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.\nFor non-highlighted materials: increase the immediate precautionary measure distance, in the downwind\ndirection, as necessary.\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 242\nERG 2024\n\nSubstances - Toxic and/or Corrosive\n(Combustible/Water-Sensitive)\nGUIDE\n156\nEMERGENCY RESPONSE\nFIRE\n•\nNote: Most foams will react with the material and release corrosive/toxic gases.\nCAUTION: For Acetyl bromide (UN1716), use CO2 or dry chemical only.\nSmall Fire\n•\nCO2, dry chemical, dry sand, alcohol-resistant foam.\nLarge Fire\n•\nWater spray, fog or alcohol-resistant foam.\n•\nFOR CHLOROSILANES, DO NOT USE WATER; use alcohol-resistant foam.\n•\nIf it can be done safely, move undamaged containers away from the area around the fire.\n•\nAvoid aiming straight or solid streams directly onto the product.\nFire Involving Tanks, Rail Tank Cars or Highway Tanks\n•\nFight fire from maximum distance or use unmanned master stream devices or monitor nozzles.\n•\nDo not get water inside containers.\n•\nCool containers with flooding quantities of water until well after fire is out.\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 damaged containers or spilled material unless wearing appropriate protective clothing.\n•\nStop leak if you can do it without risk.\n•\nA vapor-suppressing foam may be used to reduce vapors.\n•\nFOR CHLOROSILANES, use alcohol-resistant foam to reduce vapors.\n•\nDO NOT GET WATER on spilled substance or inside containers.\n•\nUse water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled\nmaterial.\n•\nPrevent entry into waterways, sewers, basements or confined areas.\nSmall Spill\n•\nCover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to\nminimize spreading or contact with rain.\n•\nUse clean, non-sparking tools to collect material and place it into loosely covered plastic containers for\nlater disposal.\nFIRST AID\nRefer to the “General First Aid” section.\nSpecific First Aid:\n•\nFor corrosives, in case of contact, immediately flush skin or eyes with running water for at least 30\nminutes. Additional flushing may be required.\n•\nRemoval of solidified molten material from skin requires medical assistance.\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 243","truncated":false,"body_characters":5102}