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Cleanliness requirements of Class 100,000 dust-free workshops


Cleanroom guidelines require:
1. The air supply of the clean room is sufficient to dilute or eliminate the pollution generated in the room.
2. The air in the clean room flows from the clean area to the area with poor cleanliness, the contaminated air flows to a minimum, and the air flows in the doorway and in the indoor building in the correct direction.
3. Clean room air supply will not significantly increase indoor pollution.
4. The movement state of the indoor air can ensure that there is no high concentration area in the dense room.
If the clean room meets the requirements of these guidelines, its particle concentration or microbial concentration (if necessary) can be measured to confirm that it meets the specified clean room standards.
Clean room test:
1. Supply air volume and exhaust air volume: If it is a turbulent clean room, then it is necessary to measure its supply air volume and exhaust air volume. If it is a one-way flow clean room, the wind speed should be measured.
2. Airflow control between zones: In order to prove that the direction of airflow movement between the zones is correct, that is, from the clean zone to the area with poor cleanliness, you must check: (1) the pressure difference in each zone is correct; The direction of airflow movement in the openings on the floor, etc. is correct, that is, from the clean area to the area with poor cleanliness. 3Ny [Yh6Er
3. Filter leak detection: The high-efficiency filter and its frame must be inspected to ensure that suspended pollutants do not pass through: (1) the damaged filter; (2) the gap between the filter and its frame; (3) ) Other parts of the filter device enter the room.
4. Isolation leak detection: This test is to prove that suspended pollutants do not penetrate the clean room through building materials.
5. Indoor airflow control: The type of airflow control test depends on the airflow pattern of the clean room—turbulent or unidirectional. If the clean room air flow is turbulent, it must be verified that there is no area in the room where the air flow is insufficient. If it is a unidirectional flow clean room, it must be verified that the wind speed and direction of the entire room meet the design requirements.
6. Suspended particle concentration and microbial concentration: If these tests meet the requirements, then the particle concentration and microbial concentration (when required) are measured to verify that they meet the technical requirements for clean room design.
7. Other tests: temperature, relative humidity, indoor heating and cooling capacity, noise value, light intensity, vibration value.

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