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Health and Safety

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Transcript

  • 1. Health & Safety at Work Hazards from Aerosols
  • 2.
    • To understand the hazards associated with aerosol products.
    • Understand how to control these hazards in the workplace.
    • Safe aerosol handling.
    Objective
  • 3. Fire triangle HEAT SOURCE FUEL SUPPLY
  • 4. Hazards FIRE EXPLOSIONS MISSILES
  • 5.
    • Liquid Petroleum Gas as propellant
    • Product base – possibly alcohol or similar flammable liquid.
    Hazardous Material
  • 6.
    • “ The lowest temperature of a liquid at which the vapour given of forms a flammable mixture with oxygen in the air”
    Flashpoint
  • 7.
    • Temperature required to cause ignition of flammable liquids / vapours.
    • Typically greater than 400 degrees C.
    • Generally in open conditions (workplace) temperatures required for auto-ignition are much higher.
    Auto - Ignition
  • 8.
    • Propellant provides about 3 bar pressure in cans.
    • Vapour pressure increases if temperature of can contents increase.
    • Cans typically designed to survive 16 bar pressure.
    • At 70 – 80 degrees pressure will cause cans to burst.
    • Top / bottom of can distorts first.
    • Tin plate cans – top / bottom flies off = missiles.
    • Aluminium cans usually split on body.
    Pressurised Containers
  • 9.
    • Fire around can heats contents very quickly.
    • Internal pressure rises.
    • Can distorts.
    • Can bursts.
    • Flammable contents instantaneously released.
    • Fireball created.
    • Can fragments ejected as missiles.
    Behaviour of cans In fire
  • 10. The aftermath!
  • 11. Total Devastation!
  • 12.
    • “ The fundamental safety philosophy which ensures that an item of equipment can be operated, or an operation performed, in a safe manner with risks that area as low as practicable”
    Basic Principles Of Safety
  • 13.
    • Preventive measures i.e. prevention of the initiation of fire or explosion.
    • Protective measures i.e. acceptance that a fire or explosion can arise but aim to control the consequences.
    • Decision is based on Risk versus Likelihood and Consequences.
    Basis of safety
  • 14.
    • Avoidance of flammable atmospheres
    • (So no hazard, or else flammable volume insufficient to be an explosion hazard)
    • Elimination of ignition sources
    Preventive Measures
  • 15.
    • Extinguishment of fires.
    • Containment / control of fires.
    • Containment of explosion.
    • Explosion suppression.
    • Explosion venting.
    Protective Measures
  • 16.
    • Wrapped packs of cans on pallets, in racking or on the floor.
    • Pallets moved by Mechanical Handling Equipment or by automated systems.
    • What are the potential fire hazards?
    Consider this!!
  • 17.
    • Ignition of leak from aerosols
    • (propellant or product base)
    • Ignition of packaging material.
    • Fire on MHE.
    • Fire in battery charging area .
    Fire Hazards
  • 18.
    • Are there any potential explosion risks?
  • 19.
    • Cans spontaneously bursting
    • Faulty products
    • Cans overheated in storage
    • Cans releasing propellant to form flammable atmospheres
    • Leaking cans taken into storage
    • Cans damaged during handling
    Explosion Hazards
  • 20.
    • Naked flames
    • Electrical sparks
    • Impact sparks
    • Static electricity
    • Hot surfaces
    Ignition Sources (Generic)
  • 21.
    • Sparks or hot surfaces from fixed electrical equipment.
    • Sparks or hot surfaces from MHE or cranes.
    • Sparks from an impact involving MHE or crane e.g. forks hitting nail in a pallet.
    • Static electricity.
    • Hot work
    • Smokers’ material
    Ignition Sources (Specific)
  • 22.  
  • 23. BEWARE!
  • 24.
    • Care when mechanical handling.
    • Care when stacking pallets on racks.
    • Minimum exposure to high temperature.
    Fire Protection AVOID CAUSING CANS TO LEAK;
  • 25.
    • Wet Packs.
    • Smells of perfume.
    • MHE accidents / fallen pallets.
    • Checks before moving pallets.
    • Manual checks on individual cans.
    • Loading and unloading wrapping machines.
    Fire Protection IDENTIFYING LEAKING CANS;
  • 26.
    • Remove to outdoor reject bin / cage
    • Remove pallets to outside before breaking.
    • Do not move pallet with electric MHE – use hand pallet truck.
    Fire Protection IF / WHEN LEAKING CANS ARE FOUND;
  • 27.
    • IF A PALLET CONTAINING AEROSOLS IS DROPPED OR HIT BY MHE;
    • Immediately STOP!
    • Switch off MHE.
    • Identify leaking cans and remove by hand.
    Fire Protection
  • 28. REMEMBER!
    • Aerosols are perfectly safe IF handled with care.
    • Safe working practices and adherence to safe working systems are essential.
    • Do not take risks!
    • If you are unsure about any situation then cease work, turn off MHE and seek guidance.
  • 29. WORK SAFELY – ALWAYS!
    • Report all accidents, incidents and near misses immediately.
    • Ensure your colleagues are also working safely and not taking unnecessary risks.
    • Do not allow the pressure of work to force you to take short cuts.