Clean Room Lighting Levels

Cleanroom lighting is often an afterthought in cleanroom design as the primary function of a cleanroom is to reduce contamination.

Clean room lighting levels.

In this post we will go over the different types of lighting features and levels for you to consider for your cleanroom. Operating room general 150 operating table task lighting as required scrub general 75 instruments and sterile supply room 30 clean up room instruments 50 anesthesia storage 30 substerile room 30 toilets bathing general includes water closets shower tub 30 night lighting 3 utility room clean and soiled general 30 work counter 50. As with every aspect of a cleanroom the lighting is extremely important and requires proper cleanability. Ingress protection ip pressurized plenums nsf cleanability.

In a building in the area closest to the windows the light level may be reduced to approximately 1000 lux in the middle area it may be as low as 25 50 lux additional lighting is often necessary to compensate low levels. Cleanrooms are used for manufacturing where high levels of cleanliness and sterility are required. The table below provides recommended light levels from the iesna lighting handbook and lpd levels from the iecc 2015. The us general services administration provides lighting levels and lpds for us government buildings which can be used as a guide for other types of buildings.

Designed around certified performance criteria kenall s simpleseal cleanroom light fixtures as verified by independent laboratory testing meet stringent standards for. So when identifying the type of light fitting to use consideration needs to be given not just to the lux levels required for the process but to how this choice of lighting may affect airflow and filtration. A cleanroom or clean room is a room that has hepa filtration to remove particles from the air. Common applications are medical devices pharmaceutical and semiconductor manufacturing.

Lighting zone 2 suburban 1 0 5 2 6 3 1 2 gas station canopy 12 5 10 15 safety building exterior 1 0 5 2 if security is an issue raise average level to 3 retail general retail ambient 50 department store 40 20 80 15 7 5 30 perimeter 75 35 150 accent lighting displays 3 10 times greater than ambient light levels. The outdoor light level is approximately 10000 lux on a clear day. In reality however you can reach an iso 6 clean room with 1 recommendation is 2 airlock. In order to prevent any type of contamination the lighting must be bacteria free.

Check your local jurisdiction for other or more stringent requirements. In theory for an entire room to reach iso 6 air cleanliness you need to enter the cleanroom via an iso 8 ante room then go through an iso 7 to finally get into the iso 6 as shown in the image.