Positive Pressure Facility

Hi,

I used to run a clean room, and it's right, most of the dust is created internally.

You will need to add some HEPA filtering to the area, and an air handling unit that can control temp and humidity as well to get correct environmental control. It's not that hard, but there are other things that can be done.

Positive pressure is a good thing, and will keep external dust out, so it's a start.

* Reduce or eliminate paper and card in the clean area, as most dust comes from paper fibers.

* Don't tear plastic packaging, as the plastic at the tear becomes small crystals that become dust.

* Vacuum all the time, and have it happen after each shift. Install one of those vacuum systems that use pipes to the vacuum motor mounted outside away from a door. All the dust will be sucked outside. They are cheap to install, so a good start. The simplest way to eliminate dust is to suck it outside constantly.

* Use a sealed floor such as floor tile, and try and turn up the floor at the wall and travel up the wall where things bang against the wall, so plaster does not fall off the walls and become dust.

* You can use double door anti rooms to stop people just walking in and out without putting on some clean room garments. These keep dust from peoples cloths from getting all over the place.

* There are sticky floor mats you can get and clean room shoe covers that keep dust from being walked in.

* Keep horizontal surfaces to a minimum, as that's where dust collects. Try and design shelfs and other things on an angle, so dust does not collect.

That's all clean room stuff, and might be a bit over the top for you, but some of these things will help keep dust down. Keeping peoples cloths and shoes covered, and keeping cardboard packing boxes out of the area should help, along with constant vacuuming.

Hope this helps.

Regards,

Grant

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