The Industrial Enviroment Setting
The lit environment must be safe and allow occupants to work and move about as easily as possible, meeting statutory obligations. LG1 says that Lighting, in the industrial setting, has three objectives: to facilitate quick and accurate work, to contribute to the safety of
those doing the work and to create a good visual environment. An industrial environment covers many activities and types of work, an analysis of the visual tasks in terms of size, contrast, duration, colour discrimination etc, will be required to establish the quality and light levels required to achieve satisfactory conditions. Consideration will need to be given to the type of lighting, e.g. localised or task lighting, the daylight available, use of lighting controls and future maintenance. Other constraints which could affect the lit area include compliance with Building Regulations, environmental considerations and energy consumption and cost / financial restrictions.
Illuminance
Specific attention must be given to the illuminance on the task which, in combination with the reflectiveness of the materials from which the task is constructed and the immediate surroundings to the task, determines the sensitivity of the human visual ability. The illuminance recommendations given in LG1 are to be produced on the plane in which the task lies.
Obstruction, Reflectance & Glare
Consideration should also be given to obstruction, the reflectance of the surfaces and glare. Large machinery could affect the distribution of light causing shadowing so special care is required in the design of the installation. Reflectance of surfaces contribute to the quality of lighting and help to provide an improved lit environment as well as reducing glare. There are several different types of glare including disability glare, discomfort glare and glare by reflection.
Colour & Strobe Effect
Accurate colour judgements often need to be made in industry, LG1 recommends light sources greater than 90 CRI. Colour Rendering Index (CRI) is the measurement of how colours look under a light source when compared with sunlight. The index is measured from 0-100, with 100 indicating that colours under the light source appear the same as they would under natural sunlight. LED luminaires provide the perfect solution and due to only having a small oscillation in light output, also eliminate the strobe effect often caused by traditional lamped luminaires that could give an illusion of making rotating machinery appear stationary or moving at a different speed than it really is.
LG1 reviews a wide range of interior applications including heavy industrial requirements such as Fuel industries, Metal, Ceramics and Chemicals production, Electrical and Mechanical Engineering, Timber and furnishing, Plastics and rubber, Clothing and Footwear, Paper and printing, Food and beverage, Distribution, Storage and Workshops. Each application will have various light level requirements and regulations to meet, below we take a look at some of the more common applications.
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