What is a clean room?
Clean room, as its name suggests, is a closed environment and space that is different from normal spaces in terms of airborne particles. What is the difference and what is the purpose of a clean room? The main difference between a clean room and other rooms is the equipment used to control humidity, air temperature, microbial contamination, suspended particles in the air, etc. In fact, the clean room is built for the production of products that require a completely sterilized environment and space away from common pollution in their production process. The clean room can be the entire closed space of a factory or only a small part of all the production steps of a product. This room is usually used in the pharmaceutical and biopharmaceutical, food, health and cosmetic, space, automotive, electronic and many other industries.
It is worth mentioning that the only way to control pollution in a specific environment is to control the air of that environment. In this process, the amount and direction of air flow, pressure, temperature, humidity and specialized filtration are all strictly controlled and the amount of each in the respective clean room depends on the type of student produced. There are more types of filters in the clean room than in normal rooms, and they try to minimize the entry of suspended particles and microbes in the doors. The construction and maintenance of the clean room is based on planning and special global standards.
What is pollution?
Pollution is actually a practice based on which the surfaces and equipment in an environment are covered with particles in the air and are eaten by the so-called soil. Typically, most industries target particles of 0.5 microns or larger, however, today some industries target smaller particles as well. It is necessary that cleanroom workers have a thorough knowledge of the sources of contamination in that particular environment. Each time the clean room is used, the cleaning method and entering and exiting the room must be planned and followed.
Special sources usually cause contamination in the sharp room, five of which are common to most clean rooms.
1- Facilities and facilities available in the room:
* Walls, ceiling and floor
* Paint or wallpaper or any other covering
* Residual particles in air conditioning
* Air and vapors in the room
* Chairs, benches and tables
2- Human resource:
* Oil on the skin, sweat, particles and dead skin cells
* Cosmetics and perfumes
* Clothing components such as yarn and fibers
3- Production tools:
* Friction and wear of particles
* Lubricants and production of greenhouse gases
* Vibrations and tremors
* Remaining particles from sweeping and dusting
* Particulate matter in the air
* Bacteria, organic matter and moisture
* Chemical cleaners
* deionized water
5- Residues of product production
* Silicon chips
* Quartz grains
* The remains of the clean room
* Aluminum particles