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Explosion in Fuel Powders ((Conjunction, •Factors, • Start, • Propagation,…
Explosion in Fuel Powders
Qualitative Risk Assessment
EXPLOSION OF COMBUSTIBLE POWDERS
Chemistry of Fire
The conditions determined for a powder
fuel whether explosive or not have not been investigated
with depth
Characteristics of Explosions
Control of Risks
.The heat power
• The reaction speed.
• The volume of gases generated.
“Para que se produfind yourself in suspension
aerial. "zca una explosión el polvo debe
For there to be a risk of dust explosion, it must be dispersed in the air. The
fundamental characteristics
Air at rest, time
Powder cloud Powder bed
Variations, air currents
Explosion Risk Fire Risk
Conjunction
•Factors
• Start
• Propagation
• Consequences
• Prevention
• Fight
• Evaluación
General principles of struggle
Minimum explosive concentration.
Minimum temperature of inflammation.
Minimum oxygen concentration-
Maximum explosion pressure.
Maximum pressure gradient.-
Regrettably, the adoption of
Such measures do not ensure the elimination of
risk of explosion
General Principles of Prevention
Basic Principles of Extinction
Being necessary the coexistence in space and time with
sufficient intensity, of all the factors already stated, the
preventive disposal of one or more of them will prevent the
start of any
oxygen
! hot
Gas!
Chain reaction! .
Reaction to fire of materials.
Nature of Fire
Classification of Fire