EVALUATION OF ILLUMINATION LEVELS IN JEDDAH INDUSTRIAL ESTATE IN SAUDI-ARABIA

This paper reports the results of illumination levels at 76 factories in the industrial estate of Jeddah in Saudi Arabia. The factories were selected at random from different types of industries such as plastic , metal, chemical industries etc. Subsequent analysis of the data was carried out to obtain global picture about the illumination practices at the factories. The survey reveals existence of over illumination du ring day shifts in most of the factories. This is due to use of natura l light and also, due to use of excessive artificial lights, on occasi ons. There is, as well, under illumination at night shifts in signific ant number of factories which indicate design insufficiency and poor m aintenance. There is also very wide variation in illumination levels a mongst factories indicating lack of any standard practice.