Cleanrooms are sterile places where certain products are manufactured, but unlike most manufacturing environments, cleanrooms must be monitored at all times for particulate matter in the air. If the particles in the air become too large, the clean room may be disrupted and product production must be stopped.
Contamination can be caused by a number of different sources including:
• Manufacturing Process
Generally the standards required with the manufacture of a particular item, will determine the level of airborne contaminants that are allowed to be present in the clean room at any given time. Federal Standard 209E is usually used to define the standard. This document provides the different classes of air cleanliness that should be in a clean room depending on what is being produced.
Because clean rooms are closely monitored, there are always certain rules and procedures regarding entering a clean room, leaving a clean room, and how to behave while in a clean room. This is due to the fact that the only way to control contaminants in the environment is to completely control the level of activity in the environment.
Therefore, most clean rooms will require those who enter to do it a certain way and wear certain clothes. These clothes will help keep contamination at bay and by dictating how one enters the clean room, contaminants are once again kept at bay.
For example, a clean room may require all entering to cover their entire body and wear a respirator. This is due to the fact that a single strand of human hair, or even too much carbon dioxide released from human breathing can cause disaster in certain clean rooms. Certain cleanrooms will also limit the speed of movement within the cleanroom because too much movement can sometimes cause airborne particles that are too large to be in the cleanroom.
Other ways in which clean rooms are kept at certain levels of airborne contaminants are:
• Cleanroom Specific Pressure
• Cleanroom Specific Temperature
• Cleanroom Specific Humidity
• Specific Air Filtration of Cleanroom
Using such control factors will help keep the room as ‘clean’ as it should be and prevent too much contamination from getting in. Cleanrooms are also cleaned using very specific methods at regular intervals to keep all contamination away.
If the clean room is contaminated then it should be cleaned and sterilized once again. This is a long process that is also a bit expensive to do. Therefore, it is much easier for companies that have clean rooms to adhere to strict guidelines regarding their clean rooms and everyone who enters.
Cleanrooms are a necessity like many other manufacturing environments that exist today. However, unlike other manufacturing environments, not just anyone can enter a clean room because they require special care. For this reason, those who work in clean rooms are usually only a select few who can keep them clean and productive at all times.