Substance   METHANE, REFRIGERATED LIQUID or NATURAL GAS, REFRIGERATED LIQUID with high methane content
UN Number   1972
HIN (= Hazard Identification Number)   223
ADR Label   2.1
ADR Class   2
Classification Code   3F
Packing group  
ERIC   2-46
 
Emergency Response Information
FLAMMABLE LIQUEFIED REFRIGERATED GAS

1. Characteristics
  • Forms explosive mixture with air.
  • Liquid has extremely low temperature.
  • Asphyxiant : the gas will suffocate without warning.

2. Hazards
  • Heating of container(s) will cause pressure rise with risk of bursting and immediate release of expanding vapour cloud (risk of BLEVE) which may ignite, leading to explosion (VCE) and creation of a pressure wave.
  • Contact with liquid will make many materials brittle, including personal protective equipment.
  • Gives off toxic and irritant fumes when heated or burning.
  • The gas may be invisible and may enter sewers, basements or confined spaces.

3. Personal Protection
  • Self contained breathing apparatus.
  • Protect personnel from radiated heat with water fog curtain or other heat protective measures.

4. Intervention Actions
  4.1 General
  • Keep upwind.
  • No smoking, eliminate ignition sources.
  • PUBLIC SAFETY HAZARD - Warn people nearby to stay indoors with doors and windows closed. Stop any ventilation. Consider evacuation of people in immediate danger.
  • Minimise number of personnel in risk area.
  • Warn people to leave and not to re-enter basements, sewers or other confined spaces.

  4.2 Spillage
  • Stop leaks if possible.
  • Contain spillage by any means available.
  • Check explosive limits.
  • Use low sparking hand tools and intrinsically safe equipment.
  • Knock down or disperse gas cloud with water spray. Do not allow water spray to come into contact with liquid product.
  • If substance has entered a water course or sewer, inform the responsible authority.
  • Ventilate sewers and basements where there is no risk to personnel or public.

  4.3 Fire (involving the substance)
  • Keep container(s) cool with water.
  • Do not direct water at source of leak or safety devices.
  • Cut off gas supply if safe to do so.
  • Do NOT extinguish leaking gas flame unless ABSOLUTELY necessary.
  • Extinguish with water fog (spray) or dry powder.
  • Do not use water jet to extinguish.
  • Use water spray to knock down fire fumes if possible.
  • Avoid unnecessary run-off of extinguishing media which may cause pollution.

5. First Aid
  • If substance has got into eyes, wash out with water for at least 15 minutes and seek immediate medical attention.
  • Remove contaminated clothing immediately and drench affected skin with plenty of water.
  • Persons who have been in contact with the substance or have inhaled fumes should get immediate medical attention. Pass on all available product information.
  • In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing adhering to skin.

6. Essential Precautions For Product Recovery
  • Do not use standard recovery equipment. Seek specialist advice immediately.

7. Precautions After Intervention
  7.1 Undressing
  • Remove contaminated clothing as soon as possible and before leaving incident.

  7.2 Equipment Clean Up
  • No special precautions.
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