Concept of dust explosion concentration;
1, dust explosion concentration refers to the minimum concentration that can cause explosion when the volume ratio of combustible dust to oxygen in the air reaches a certain range, if it encounters an ignition source such as open flame or high temperature. Usually expressed as percentage volume concentration (%vol) or grams per cubic meter (g/m3).
2. The explosion concentration of dust is different among different substances, and its concentration range depends on the danger and flammability of dust, so it is of great significance to determine the explosion concentration of dust to prevent dust explosion accidents.
Preventive measures for dust explosion include but are not limited to the following aspects:
1. Clean environment: keep the workplace and equipment clean, and clean and dispose of dust and waste in time.
2. Ventilation: increase indoor air circulation and reduce dust concentration and accumulation.
3. Explosion-proof equipment: Purchase and use explosion-proof equipment that meets the requirements, such as explosion-proof electrical equipment and explosion-proof lamps.
4. Fire safety: In the production process, flammable materials are stored, transported and used, and safety operation procedures are strictly implemented to prevent sparks and other factors that may cause dust explosion.
5. Enhance safety awareness: improve employees' safety awareness and emergency level, and strengthen safety training and drills.
6. Inspection and maintenance: Check and maintain the integrity and stability of the equipment regularly to eliminate potential dangers and failures.
To sum up, dust explosion accidents can be effectively prevented and reduced by combining various means.