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Standard for class 100000 dust-free workshop

Release time:2022-04-11 13:40:51  Views:147

When planning to build dust-free workshops, clean workshops, GMP workshops, clean operating rooms and clean laboratories, many friends have requirements for the purification level, but they often make it difficult to choose which purification level. They often ask about the standards and differences of various cleaning levels and the most suitable cleaning level for their own projects. Today, Xiaobian will introduce to readers in detail the most commonly selected cleaning level, that is, 100000 level dust-free workshop / 100000 level clean workshop / 100000 level purification workshop. When it comes to 100000 level purification workshop and 100000 level dust-free workshop, everyone will ask, what is the standard of 100000 level purification workshop?

First, purification principle

Purification principle: air flow → primary purification → humidification section → heating section → surface cooling section → medium efficiency purification → fan air supply → pipeline → high efficiency purification outlet → blowing into the room → taking away dust, bacteria and other particles → return air shutter → primary purification. Repeat the above process to achieve the purpose of purification.

Second, common purification levels

Cleanliness level of purification workshop: level 100 (100) > level 1000 (1000) > level 10000 (10000) > level 100000 (100000) > level 300000 (300000). The smaller the value, the higher the purification level. The higher the purification level, the higher the cost.

The purification cleanliness of the dust-free workshop shall be comprehensively considered according to the production process, product standard, investment cost and other factors, and it is appropriate. Generally, there is no one million level in the industry, or it is one hundred, one thousand, ten thousand or one hundred thousand. If it exceeds 300000, it is basically not a purification workshop or dust-free workshop.

100000 class purification workshop standard, 100000 class dust-free workshop standard and 100000 class clean workshop standard

Third, define the standard of 100000 level purification workshop from the number of air changes

1. The ventilation rate of class 100000 clean room shall not be less than 15 times / h, and that of class 100000 clean room shall not be less than 15 times / h; The air purification time after complete ventilation shall not exceed 40 minutes.

2. The ventilation rate of 10000 class clean room shall not be less than 25 times / h, and 10000 class clean room shall not be less than 25 times / h; The air purification time after complete ventilation shall not exceed 30 minutes.

3. The ventilation rate of 1000 class clean room shall not be less than 50 times / h, and 1000 class clean room shall not be less than 50 times / h; The air purification time after complete ventilation shall not exceed 20 minutes.

100000 level purification is to continuously dilute the indoor air with clean air flow and gradually discharge the indoor pollution to achieve the cleaning effect.

Fourth, define the standard of 100000 level purification workshop from the amount of micro dust in unit volume

The maximum allowable number of fine dust in class 100000 purification workshop is: the number of particles larger than or equal to 0.5 microns, which shall not exceed 3500000 per cubic meter; The number of particles greater than or equal to 5 microns shall not exceed 20000 per cubic meter.

Fifth, define the standard of 100000 level purification workshop from the maximum allowable number of microorganisms

The maximum allowable number of microorganisms in 100000 level purification workshop is: the number of planktonic bacteria shall not exceed 500 per cubic meter; The number of settling bacteria shall not exceed 10 per Petri dish.

Sixth, define the standard of 100000 level purification workshop from the perspective of differential pressure

Pressure difference of 100000 level purification workshop: the regional pressure difference of purification workshop with the same cleanliness level shall be consistent. The pressure difference between adjacent purification workshops with different cleanliness levels shall be ≥ 5pa, and that between 100000 level purification workshop and non purification workshop shall be ≥ 10Pa.