Cleanroom Construction & Requirements
Specialized rooms, called clean rooms, are used by companies that manufacture precision parts used in biotechnology, space satellites, computers and sterile medical devices. Air quality, temperature and humidity are all strictly regulated to avoid contamination of sensitive parts.
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Construction
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Clean rooms can be permanent, modular or portable, and have hard or soft walls. The specifications of a clean room depend upon the needs of the company. The size of a clean room can range from small to expansive. Factors to consider are the optimal floor plan, lighting, how much heat will be generated by the workers and equipment, the humidity level required and any additional features such as electronic communications or pass-through units.
Requirements
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The main requirements for clean rooms are air filtration and control. A laminar air flow must be maintained in clean rooms to avoid air turbulence. Air is also filtered repeatedly through high efficiency particulate air (HEPA) filters that can remove particles as small as 0.3 microns.
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Classification
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Clean rooms are classified into six categories, determined by the size and number of particles allowed in the room's air. A Class 100 clean room should contain no more than 100 particles of 0.5 microns or larger per cubic foot of air, according to Coastwide Laboratories.
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