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Guide 174

 

Name of Material
 
 
Adsorbed gas, flammable, n.o.s.
 
 
GUIDE
174
ADSORBED GASES - FLAMMABLE OR OXIDIZING
 
POTENTIAL HAZARDS

FIRE OR EXPLOSION

  • Some gases will be ignited by heat, sparks or flames but NOT readily due to low transportation pressure.
  • Substance does not burn but will support combustion.
  • Vapors may travel to source of ignition and flash back.
  • Cylinders exposed to fire may vent and release flammable gas through pressure relief devices.
  • Containers may explode when exposed to prolonged direct flame impingement.

HEALTH

  • Vapors may cause dizziness or asphyxiation without warning.
  • Some may be irritating if inhaled at high concentrations.
  • Contact with gas may cause burns and injury.
  • Fire may produce irritating and/or toxic gases.
PUBLIC SAFETY
  • CALL Emergency Response Telephone Number on Shipping Paper first. If Shipping Paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
  • As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions.
  • Keep unauthorized personnel away.
  • Stay upwind, uphill and/or upstream.
  • Many gases are heavier than air and will spread along ground and collect in low or confined areas (sewers, basements, tanks).
  • Ventilate closed spaces before entering.

PROTECTIVE CLOTHING

  • Wear positive pressure self-contained breathing apparatus (SCBA).
  • Structural firefighters' protective clothing will only provide limited protection.

EVACUATION

Large Spill

  • Consider initial downwind evacuation for at least 800 meters (1/2 mile).

Fire

  • If several small packages (rail or trailer) are involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions.
EMERGENCY RESPONSE

FIRE

  • DO NOT EXTINGUISH A LEAKING GAS FIRE UNLESS LEAK CAN BE STOPPED.
  • Use extinguishing agent suitable for type of surrounding fire.

Small Fire

  • Dry chemical or CO2.

Large Fire

  • Water spray or fog.
  • Move containers from fire area if you can do it without risk.
  • Damaged cylinders should be handled only by specialists.
Fire involving Several Small Packages (rail or trailer)
  • Fight fire from maximum distance or use unmanned hose holders or monitor nozzles.
  • Cool containers with flooding quantities of water until well after fire is out.
  • Do not direct water at source of leak or safety devices.
  • Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.
  • ALWAYS stay away from tanks engulfed in fire.
  • For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

SPILL OR LEAK

  • For flammable gases, ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.
  • For oxidizing substances, keep combustibles (wood, paper, oil, etc.) away from spilled material.
  • All equipment used when handling the product must be grounded.
  • Do not touch or walk through spilled material.
  • Stop leak if you can do it without risk.
  • Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material.
  • Do not direct water at spill or source of leak.
  • Prevent spreading of vapors through sewers, ventilation systems and confined areas.
  • Ventilate the area.
  • Isolate area until gas has dispersed.

FIRST AID

  • Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.
  • Move victim to fresh air.
  • Call 911 or emergency medical service.
  • Give artificial respiration if victim is not breathing.
  • Administer oxygen if breathing is difficult.
  • Remove and isolate contaminated clothing and shoes.
  • In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin.
  • Keep victim calm and warm.
 
 
 
 
Date Modified:
2016-08-25