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What is the difference between a clean shed and a clean room?
What is the difference between a clean shed and a clean room?There are differences between clean sheds and clean rooms in the following aspects:Definition and structure Clean shed: It is a prefabricated structure that can provide a local clean environment, usually composed of a purification unit, fan filter unit (FFU), frame structure, anti-static curtain, etc. It is generally built in the ordinary plant, does not rely on the overall purification system of the plant, can operate independently, the structure is relatively simple, high flexibility. Clean room: refers to the removal of particles, harmful air, bacteria, and other pollutants in the air within a specific space range, and the indoor temperature, humidity, cleanliness, airspeed, air distribution, noise and vibration, lighting, static electricity control within a specific range of demand, and specially designed room. It is a complete, relatively independent confined space, with a more complex building structure and purification system. Cleanliness level Clean shed: usually can reach 10,000 to 100 levels of cleanliness, suitable for cleanliness requirements are high, but the production process is relatively simple or the output is small, such as the laboratory local experiment area, local assembly area of electronic components, etc. Clean room: According to different production processes and product requirements, from 10 to millions of levels of cleanliness. For example, in the sterile production workshop of the pharmaceutical industry, it is usually required to achieve 10 to 100 levels of cleanliness; Some ordinary electronic production workshops may reach 10,000 or 100,000 levels. Application scenario Clean shed: Temporary or phased needs: such as short-term experimental projects, and product trial production stages, do not need to occupy a large area of clean space for a long time, the use of a clean shed can flexibly meet the temporary cleaning needs. Local high-precision requirements area: In ordinary workshops, for some production processes or experimental operations that require high-precision control of cleanliness, clean sheds can be set up to provide a local clean environment, avoid the purification and transformation of the entire workshop, and save costs. Clean room: Large-scale production: It is suitable for industries that require large-scale and continuous production, such as drug production workshops of pharmaceutical factories, semiconductor chip manufacturing factories, etc., which can meet the strict requirements of a clean environment for large-scale product production. Scientific research institutions with strict environmental requirements: such as biological laboratories, precision instrument manufacturing workshops, etc., need to conduct experiments and production in a stable and clean environment, and clean rooms can provide comprehensive and continuous clean protection. Construction and maintenance costs Clean shed: The construction cycle is short and the cost is relatively low. Because of its simple structure, there is no need to carry out large-scale renovation of the entire building, and the equipment installation is also more convenient. Maintenance costs are also relatively low, mainly focused on maintaining FFU and other equipment and filter replacement. Clean room: The construction cost is high, and the building structure, purification system, air conditioning system, electrical system, and so on need to be comprehensively designed and constructed, involving more professional fields and complex processes. The maintenance cost is also high, and the entire purification system needs to be maintained regularly, including the maintenance and replacement of air conditioning units, air filters, high-efficiency air supply outlets, and other equipment, as well as the environmental monitoring and cleaning and disinfection of the clean room. |
