2007, Piran, Slovenia

Environmental Ergonomics XII
Igor B. Mekjavic, Stelios N. Kounalakis & Nigel A.S. Taylor (Eds.), © BIOMED, Ljubljana 2007
Figure 1: Graphical representation of the existing lighting level at the work-places that were
studied
Figure 2: Graphical representation of the existing contrast between details and background at
the work-places that were studied
Depending on the characteristic of background we found 11 machines with dark background,
representing 26.19%, 11 machines with medium background, representing 26.19%, and 20
machines with light background, representing 47.61% (Figure 3).
Figure 3: Graphical representation of the studies sample depending of the background
lighting characteristics
DISCUSSION
After this research was completed, we concluded the following: (1) The analyzed industrial
illumination systems are similar to the requests of The Standards for Work Security form
Romania. There is interest for the good functioning of general and local lighting. Production
systems are using the natural lighting (through windows and windows in the roof), but in
limited time of working shifts (only the 1 st shift, depending on the season from 3- 8
hours/day). (2) Postural stress of human operators, mostly women, with ages between 20-56 y
affects their wellbeing. Professional diseases frequently encountered are: myopia,
538
29%
14%
93%
26%
25%
2%
5%
5%
49%
33%
19%
Big contrast
Medium contrast
Less contrast
less than 300lux
300-499lx
500-699lx
700-899lx
more then 900lx
Light fond
Medium light fond
Low light fond