By M. Kozicki, S. Hoenig, P. Robinson (auth.)
In penning this e-book, our aim was once to provide a miles wanted educating and reference textual content with a clean method of c1eanroom know-how. the obvious technological explanation for bringing this booklet into being is that c1ean rooms became very important to the manufacture and improvement of excessive expertise items in either the economic and army sectors, and there fore humans need to enhance an realizing of them. Examples of c1ean room purposes comprise the manufacture of built-in circuits and different digital parts, preciSion mechanical assemblies, machine disks and drives, compact disks, optical elements, scientific implants and prostheses, prescribed drugs and biochemicals, and so forth. The publication is written for a person who's at present concerned, or intends to get involved, with c1eanrooms. We intend it for use by means of a variety of specialist teams together with strategy engineers, creation engineers, plant mechanical and electric engineers, learn engineers and scientists, managers, and so forth. additionally, we think it will likely be important to people who layout, construct, provider, and provide c1eanrooms, and should be used as a coaching relief for college kids who intend to pursue a occupation concerning managed environments and others resembling c1eanroom operators and upkeep employees. we've got tried to guide away from complicated thought, that could be pursued in lots of different professional texts, and maintain the e-book as comprehensible and appropriate as possible.
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Extra info for Cleanrooms: Facilities and Practices
We also must have a floor and a ceiling. Problem number one arises with bUilding materials and the techniques we use to erect the structure. Will the material act as a source of particulate or gaseous contamination from the surface or cut edges? Will material contamination problems become worse with time? If the material is suitable with regard to contamination, does it still meet building and fire codes? If we can find a clean material which we can legally use, we now have to supply air to our room.
Gas and Vapor Standards When using hazardous production materials (HPM), it is an unfortunate but nevertheless inescapable fact that exposure of the work force is inevitable, especially in the case of gases and vapors. No system is foolproof (or leakproof) enough to prevent this. There will always be some quantity of HPM in the work environment. We have to ensure that the levels present cause no harm to the work force or the product. " Fortunately, we do not have to generate "how much is too much" data as it is done for us from an industrial toxicology rather than a contamination control viewpoint.
If our controlled environment is a socalled cleanroom, it is obvious that our first priority will be the control of contamination, both particles and vapors. Therefore we must have some control over the intake and generation of contamination in our controlled area. We must also be able to measure the results of our control action, for example, in order to judge how effective our control of particles is, we have to be able to measure particle densities. There is one point we must note and keep in mind at all times.