The lighting of large external industrial areas such as goods sorting areas, transit areas for vehicles and men, outdoor storage areas, for protectionist purposes, falls within the scope of the Consolidated Law on Safety at Work, Italian Legislative Decree 81/08, in broad concept of workplaces if pertaining to the company or production unit accessible to the worker in the ambit of his / her job.
The UNI EN 12464-2 standard of January 2008, Annex A, specifies the lighting requirements to guarantee sufficient levels of visual comfort and visual performance for workers who carry out their work in outdoor environments.
The UNI EN 12464-2 standard specifies the requirements for lighting in most outdoor workplaces and their related areas in terms of quantity and quality of lighting. To allow operators to perform outdoor activities efficiently and accurately, especially during the night, adequate and appropriate lighting must be guaranteed. Lighting, degree of visibility and visual comfort required, depend on the type and duration of outdoor work.
For good lighting, it is essential that, in addition to the required lighting, other qualitative and quantitative needs are met. The lighting requirements go through the satisfaction of three basic human needs:
- visual comfort – when workers have a feeling of well-being, which, indirectly, also contributes to creating a high level of productivity;
- visual performance – when workers are able to perform their visual tasks, even in difficult circumstances and over long periods;
The main parameters to consider in the design phase are: the distribution of luminances; the illuminance; glare; the intrusive light; the direction of the light; the color rendering and the appearance of the color of the light; flicker and stroboscopic effects; the maintenance factor; energy saving.