Surrounding structure and interior decoration materials of dust-free workshop should be chosen with good air tightness, and materials with small deformation should be used when the temperature and humidity change; the walls and roof surfaces should be smooth and smooth, non-ash, non-falling dust, corrosion-resistant, impact-resistant and easy to clean. In order to make the building surface of dust-free workshop as little as possible ash, easy to clean, should avoid or reduce the concave and convex surface in the building structure, wall and ground, wall and roof, wall and wall joints should not be made into a general right angle, should be made into a radius greater than or equal to 50 mm rounded angle. The color of the wall coating should be harmonious, elegant and plain, so as to display the pollutants on the wall. Similarly, the ground should be flat, seamless, wear-resistant, corrosion-resistant, impact-resistant, non-accumulation of static electricity, easy to clean dust.
In order to avoid the dust-free workshop polluted by particulates and microorganisms in the technical intercalation, the wall and ceiling should be plastered (advanced plastering should be used). If you need to replace high-efficiency filters in the technical sandwich, sandwich wall, the ceiling should also be painted with a cover. The surface decoration of the air supply duct, air return duct and air return ditch should be suitable for the whole air supply and air return system and be easy to clean and disinfect.
Doors and windows and inner walls should be smooth, try not to leave window sills. The number of outer windows and the structure of doors and windows should be considered comprehensively according to the pollution degree of outdoor air, indoor and outdoor design temperature, humidity, indoor and outdoor pressure difference, as well as room cleanliness and other factors, so as to make the structure of the air and water vapor can be sealed, so that the pollutants are not easy to intrude from the outside, and can avoid condensation on the inner surface. In order to prevent cross-contamination within the clean area, the cracks in the internal doors, windows and partitions between rooms with different cleanliness should be sealed. Door and window modelling should be simple, and no threshold should be set up for cleaning.
In order to ensure the cleanliness of the workshop, the clean area must be sealed by windows. There should be double windows between the air conditioning area and the non air conditioning area, at least one of which is a fixed window. In addition, the connection doors of different cleanliness levels should be sealed, flat and simple, and the doors should be opened in the direction of higher level.