The clean shed should be installed in a dry, ventilated, well-lit environment, avoiding direct sunlight. The installation location should also meet the special requirements of the relevant industries, such as anti-static, anti-corrosion and so on.
The foundation construction of the clean shed should meet the design requirements to ensure that the foundation is level, solid and horizontal. After the foundation construction, acceptance should be carried out, and the installation of clean shed can be carried out only after passing.
The frame of the clean shed is made of steel, and the verticality and horizontality of the frame should be ensured during installation. After the installation of the frame is completed, anti-corrosion and anti-rust treatment should be carried out.
The roof and wall plate should be made of purification plate or other materials that meet the clean requirements. When installing, the flatness and tightness of the joints of the ceiling and wall plate should be ensured to avoid any loopholes.
The interior of the clean shed should be equipped with an air purification system, including high-efficiency filters, air showers, ultraviolet disinfection lamps and so on. When installing, make sure the connection between components is tight to avoid air leakage.
The interior of the clean room should be equipped with a lighting system, including LED lamps and lanterns. When installing, the waterproof and dustproof performance of the lamps and lanterns as well as the uniformity of illumination should be ensured.
The electrical system of the clean room should meet the relevant national standards and industry requirements. When installing, it should ensure the stability and safety of power supply, as well as the normal operation of each electrical equipment.
The grounding treatment of the clean room should meet the design requirements to ensure the safe operation of the equipment inside the clean room.
Clean shed installation is completed, acceptance should be carried out. After acceptance, the clean shed debugging to ensure that the normal operation of the system to achieve the desired clean effect.
Prior to the clean room test, the purified air-conditioning system should be operated continuously for at least 24 hours to ensure that the system is stabilized and in thermal equilibrium. In addition, it is necessary to ensure that the temperature and humidity conditions inside the clean room meet the specified requirements to avoid the accuracy of the test results being affected by the unstable environment.
Constant temperature and humidity in the clean room requires continuous measurements for 8 to 48 hours with an interval of no more than 30 minutes between each measurement, depending on the range of temperature and humidity fluctuations. This series of measurements is to ensure the stability of the internal environment of the clean room and avoid the risk of contamination due to temperature and humidity fluctuations.
The layout of the test points should follow the relevant norms, the height of the test point from the ground is 1 to 1.5 meters, and should be away from the external wall at least 0.5 meters. Such a layout is conducive to accurately capturing the distribution of particles in the air inside the clean room.
The number of measurement points varies depending on the size of the clean room. For spaces less than or equal to 50 square meters, the number of measurement points is 5; for larger spaces, 3 to 5 points are required for every additional 20 to 50 square meters.
Commonly used testing instruments include temperature and humidity meters or stick alcohol thermometers, as well as other specialized equipment used to test cleanliness, such as dust particle counters. Choosing the right instrument is critical to obtaining accurate test data.
The passing criterion for test results is that more than 90% of the measured points should achieve deviations within the design parameters. Only when the majority of the measurement points are within the permissible deviation range, can it be judged that the clean room has reached the intended cleanliness standard.
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