Complied by H S Dave DDISH Surat Health & Safety at Work Hazards from Aerosols

Complied by H S Dave DDISH Surat  To understand the hazards associated with aerosol products.  Understand how to control these hazards in the workplace.  Safe aerosol handling. Objective

Complied by H S Dave DDISH Surat Fire triangle HEAT SOURCEFUEL SUPPLY

Complied by H S Dave DDISH Surat Hazards FIRE EXPLOSIONS MISSILES

Complied by H S Dave DDISH Surat  Liquid Petroleum Gas as propellant  Product base – possibly alcohol or similar flammable liquid. Hazardous Material

Complied by H S Dave DDISH Surat “ The lowest temperature of a liquid at which the vapour given of forms a flammable mixture with oxygen in the air” Flashpoint

Complied by H S Dave DDISH Surat  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

Complied by H S Dave DDISH Surat  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

Complied by H S Dave DDISH Surat  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

Complied by H S Dave DDISH Surat The aftermath!

Complied by H S Dave DDISH Surat Total Devastation!

Complied by H S Dave DDISH Surat “ 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

Complied by H S Dave DDISH Surat  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

Complied by H S Dave DDISH Surat  Avoidance of flammable atmospheres  (So no hazard, or else flammable volume insufficient to be an explosion hazard)  Elimination of ignition sources Preventive Measures

Complied by H S Dave DDISH Surat  Extinguishment of fires.  Containment / control of fires.  Containment of explosion.  Explosion suppression.  Explosion venting. Protective Measures

Complied by H S Dave DDISH Surat 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!!

Complied by H S Dave DDISH Surat  Ignition of leak from aerosols (propellant or product base)  Ignition of packaging material.  Fire on MHE.  Fire in battery charging area. Fire Hazards

Complied by H S Dave DDISH Surat Are there any potential explosion risks?

Complied by H S Dave DDISH Surat  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

Complied by H S Dave DDISH Surat  Naked flames  Electrical sparks  Impact sparks  Static electricity  Hot surfaces Ignition Sources (Generic)

Complied by H S Dave DDISH Surat  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)

Complied by H S Dave DDISH Surat

 Care when mechanical handling.  Care when stacking pallets on racks.  Minimum exposure to high temperature. Fire Protection AVOID CAUSING CANS TO LEAK;

Complied by H S Dave DDISH Surat  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;

Complied by H S Dave DDISH Surat  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;

Complied by H S Dave DDISH Surat 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

Complied by H S Dave DDISH Surat REMEMBER! n Aerosols are perfectly safe IF handled with care. n Safe working practices and adherence to safe working systems are essential. n Do not take risks! n If you are unsure about any situation then cease work, turn off MHE and seek guidance.

Complied by H S Dave DDISH Surat WORK SAFELY – ALWAYS! n Report all accidents, incidents and near misses immediately. n Ensure your colleagues are also working safely and not taking unnecessary risks. n Do not allow the pressure of work to force you to take short cuts.