Dynamic elaboration on the Art & Science of Hazardous Area Protection
The “Fire Triangle” is a graphic representation of a concept, used to list the following prerequisites of an explosion:-
Oxygen from the air
IGNITION or Spark
The combination of these five elements generate a Dust Explosive Pentagon. Dust Explosion Pentagon is another concept . -Fuel , which in this case is combustable dust -Dust to be in form of a cloud (Dispersed particles suspended in air) -and Confined in a space -Oxygen -Ignition Source (Fire-starter)
Fire Diamonds (National Fire Protection Assiciation -704) belong to a family of pictogram related to the Ex industry. This one is usually pasted or printed on containers of dangerous chemicals.Similar pictogram are painted on carriers (Trucks , tankers or lorries ) of the dangerous chemicals. This pictogram, known commonly as Fire Diamond, is mainly used in the USA.
The four divisions are typically color-coded, with – blue indicating level of health hazard, – red indicating flammability, – yellow (chemical) reactivity, and white containing special codes for unique hazards. Each of health, flammability and reactivity is rated on a scale from 0 (no hazard; normal substance) to 4 (severe risk). (Ref: Wikipedia)