ZJNF construction process of a clean room with laminar flow hood ffu fan filter unit

The construction process of a clean room mainly consists of three stages: preliminary preparation, mid-term installation, and later debugging.
The preliminary preparation stage is the foundation, which requires completing the acceptance of the main structure, setting up dedicated construction entrances, and equipping shoe dust cleaning devices. Construction tools and materials must be cleaned before entering the site, and the protective film of the purification board must be kept intact. It is strictly prohibited to tear it off in advance. The construction area is under closed management, and smoking and eating are strictly prohibited. Cutting operations must be equipped with specialized vacuum cleaners, and the generated dust must be removed immediately.
The mid-term installation phase is the core, including the installation of enclosure structure, ceiling installation, ground construction, etc. When installing the enclosure structure, the color steel plate needs to be prefabricated in the factory, and on-site installation should ensure reliable connection, sealing and leak prevention. The installation of the ceiling requires the use of a screw rod to connect the expansion three piece set and the flower basket screw. The T-beam is drilled and hung on the flower basket screw. The machine made ceiling is attached to the wall panel, and the corner aluminum is used to fix the wall panel and ceiling. Before ground construction, the base layer should be flat, without hollowing or cracks, with a moisture content of ≤ 4%, and waterproof treatment should be carried out.
The later debugging stage is crucial, requiring system debugging and acceptance evaluation. The debugging content includes core processes such as air volume balance, air pressure testing, and cleanliness inspection. Cleanliness testing should be conducted after 24 hours of continuous operation of the system, using a particle counter to sample at designated points, and the test results should meet the designed cleanliness level.