airmenu.GIF (8336 bytes) logo3.GIF (4256 bytes)

Clean Room Concepts



findout.GIF (1077 bytes)
Page 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8

blank.gif (60 bytes)
cleanup.GIF (4263 bytes)
With Air Crafters
Clean Room Products
blank.gif (60 bytes)

 

 


AIRBORNE PARTICULATE CONTROL

Airborne particulate matter can be of organic or inorganic origin. Most contamination-control problems concern the total contamination within the air. Airborne particles range in size from 0.001 microns to several hundred microns.

Before any methods of contamination control of airborne particles can be successfully applied, a decision must be made as to how critical this particulate matter is to the process or operation in question. At the same time, consideration must be given to the quantity of particles of a given size that might be present at a specific point within an area.

Since a definite relationship exists between the size of a particle and the time in which it may be airborne, it is most meaningful to discuss particles by quantity of a given size. Both Fed. Std. 209-E and AF Technical Order T.O.00-25-203 show typical relationships.

To further analyze your contamination control requirements, the source of contamination should be considered. Basically, this is divided into external sources and internal sources.

For any given space there exists the external influence of atmospheric contamination, which inevitably finds its way into all areas of our working environment. This external contamination is generally introduced through air-conditioning systems which supply the workspace. In addition, external contamination can infiltrate through doors, penetrations or cracks within the enclosure. This contamination can generally be controlled by the level of filtration utilized in conjunction with clean-area pressurization.

Internal sources of contamination are caused through the introduction of equipment, material and personnel within an area. Contamination is created by every activity involving friction between surfaces. For example, the simple act of writing with a pencil on a piece of paper creates a cloud of very fine carbon particles and paper fibers. Even the movement of two pieces of metal together can generate very small particulate matter which can become airborne to form a very fine metallic dust. However, the greatest source of internal contamination is people. We continually shed particles. Flakes of dry skin, fabric fibers or loose hair are only some the sources that could destroy your critical manufacturing process. The amount generated can vary from as few as several hundred particles per hour to several thousand.

shade.gif (2128 bytes)


findout.GIF (1077 bytes)
Page 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8

 

blank.gif (60 bytes)

Concepts | Products | Employment | Company Bio | Site Map | Contact Us

 

Air Crafters, Inc.
2085 Fifth Avenue
Ronkonkoma, NY 11779
(631) 471-7788 Voice
(631) 471-9161 FAX

info@air-crafters.com
http://www.air-crafters.com


1998 Air Crafters, Inc., All Rights Reserved.
We welcome your feedback.