TOOLBOX TALK 04/60
TOPIC: OPERATION GENERAL FLAMMABLE LIQUIDS
OBJECTIVE: TO PROMOTE AWARNESS OF THE DANGERS OF FLAMMABLE LIQUIDS
Some things to know before you give your talk.
- As supervisor, you should let your crew know a fact that surprises a lot of people about flammable liquids. And that fact is that it is the vapor rising from the liquid that burns, not the liquid itself.
- When flammable vapor mixes with air and a flame or spark ignition occurs.
- Whether the result of ignition is a fire or an explosion depends on the circumstances. In a closed space with the right mix, the burning is so violent that the sides of the building or the can are torn open.
Here are a few scenarios:
- A mechanic decided to cut the end out of a 44-gallon drum that had been used for storing jet fuel. There was hardly any liquid but there was enough vapor and air in the drum to cause an explosion.
- A fire occurred while a mechanic was angle grinding a piece of metal and sparks fell into a tray of thinners.
- An explosion happened during spray painting of a storage space in the workshops.
Tell your crew that explosions can be prevented by:
- Steam cleaning drums, tanks or containers before a torch is used on them.
- Providing enough ventilation to remove flammable vapours.
Questions you can use to get them talking:
- Has anyone ever had an accident – or know of one – involving flammable liquids?
- What should you do if you suspect an area has a build-up of flammable vapours?
|Hazard classification for flammable liquids|
|Class||Flash Point||Boiling Point||Examples|
|I-A||Below 23°C||Below 38°C||Diethyl ether, Pentane, Ligroin, Petroleum ether|
|I-B||Below 23°C||At or above 38°C||Acetone, Benzene, Cyclohexane, Ethanol|
Don’t be reactive, get proactive with HSEC Online®