Health and Safety


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Health and Safety

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