Test guidelines for clean workshops

In order to achieve a certain standard in clean room work, the operation of the clean room must meet the requirements of the following guidelines:

1. The clean room has sufficient air supply to dilute or eliminate the pollution generated indoors.

2. The air in the clean room flows from the clean area to the area with poor cleanliness. The flow of the polluted air is at a minimum, and the flow direction of the air at the door and in the indoor building is correct.

3. The air supply in the clean room will not significantly increase indoor pollution.

4. The state of motion of the indoor air ensures that there is no high concentration area in the closet.

If the clean room meets the requirements of these guidelines, it can measure its particle concentration or microbial concentration to determine that it meets the specified clean room standards.

Clean room test:

1. Air supply volume and exhaust air volume: If it is a turbulent clean room, measure the air supply volume and exhaust air volume. If it is a one-way flow clean room, measure its wind speed.

2. Airflow control between the zones: In order to prove that the direction of airflow movement between the zones is correct, that is, from the clean zone to the zone of poor cleanliness, it must be tested:

(1) The pressure difference of each interval is correct;

(2) The airflow in the opening at the door or at the wall, floor, etc. is in the correct direction, that is, from the clean area to the area with poor cleanliness.

3. Filter leak detection: The high-efficiency filter and its outer frame should be inspected to ensure that suspended pollutants will not pass through:

(1) a damaged filter;

(2) a gap between the filter and its outer frame;

(3) Other parts of the filter device invade 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 mode of the clean room - whether it is turbulent or one-way flow. If the clean room airflow is turbulent, it must be verified that there is no area in the room where there is insufficient airflow. In the case of a one-way 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, the particle concentration and microbial concentration (if needed) are finally measured to verify that they meet the technical requirements for clean room design.

7. Other tests: In addition to the above tests for pollution control, one or more of the following tests must be performed: temperature, relative humidity, indoor heating and cooling capacity, noise value, illuminance, and vibration value.

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