What are the three dust principles of clean room purification? Let’s discuss it with you here.
The three principles of clean room purification and management principles are actually very similar, all of which are to maintain the cleanliness and neatness of the clean room.
1. Dust-free clean room It is a room with controlled suspended particle concentration, and its construction and use method makes the least particles enter, generate, and stay in the room. Other parameters in the room include: temperature, temperature, air pressure, etc., which are controlled as needed. (Medical clean room, industrial clean room).
2. Clean level classification: static level 10, 100, 1,000, 100,000, 100,000, 300,000, etc. Federal 209E standard: No more than a certain number of particles with a particle size of 0.5um per cubic foot of space.
3. What are the three dust principles of dust-free clean room:
1. Dust-free. It means that dust is prohibited in the entire dust-free clean room, and the amount of airflow within a certain range is also clearly stipulated.
2. Dust-carrying. It is forbidden for personnel to bring dust into the dust-free clean room. Anyone entering the dust-free clean room must pass through the air shower buffer channel before entering. (The air shower is one of the necessary purification equipment for employees to enter the clean room or dust-free workshop. It can minimize the pollution problems caused by employees entering and leaving the clean room, and plays a great role in entering the dust-free clean room workshop.)
3. Dust generation. It is forbidden to generate dust inside the dust-free clean room workshop, and there are no dust blind spots around. All inner and outer arc edges are used.
Four principles of clean room management
I. Do not bring in
1. Maintain positive pressure indoors.
2. The building should be tight, and there should be no leakage of HPEA and frame.
3. Operators must change clothes according to regulations and enter the clean room through the shower room.
4. Machines, materials, tools, etc. must be cleaned before entering the clean room.
5. Non-essential items are prohibited from being brought in
II. No accumulation
1. Do not create dead corners that are difficult to clean, and the periphery of the machine should be easy to clean.
2. Avoid exposing the air duct and configuration to the room.
3. Implement cleaning work in a planned and benchmarked manner.
III. No dust generation
1. Appropriate selection of interior materials for clean rooms.
2. Dust suppression of process equipment.
3. Production automation and no gathering of personnel. Move gently.
4. Use and management of dust-free clothing and special equipment for clean rooms.
IV. Exclusion
1. The number of ventilation changes must be sufficient to meet the regulations.
2. The pollution source must be directly sucked out by exhaust equipment.
3. Clean immediately after construction.
4. The formation of airflow should be properly designed to prevent dust from adhering to the product.
