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Lighting Intensity Measurements

One of the most important factors in providing a safe working environment in workplaces, making visual works easily and creating a suitable field of view is lighting. Illumination is primarily required in order to see all the details required by quality standards in the work and processes performed. Employing employees in optimal lighting conditions serve the same purpose, as it preserves their eye health and clarity of vision.

Eye is the most important sensor in human perception of information. 80 with 90% of the whole detection occurs through the eye channel. It can be estimated that most of the fatigue caused by work conditions is caused by eye strain. In order to understand the problems of lighting technique with its effect on eye strain and fatigue, some basic concepts of this technique should be known. The unit of measure for the intensity of illumination is lux (Lux). This value is the flow of light per unit area. Illumination intensity finds the 100.000 Lux on a cloudless summer day. On a closed winter day, this value only reaches 3000Lux.

All kinds of work can be done without any problems and most importantly, the protection of the eye health of the employees requires a good lighting technique. Lighting is primarily required in order to see all the details required by quality standards in the work done. Employing employees in optimal lighting conditions is also extremely important as they preserve eye health and clarity of vision. In addition to the visual effect of lighting, there are also biological and psychological effects such as feeling good, high morale and fatigue of the employee. Lighting in workplaces also affects work efficiency to a great extent.

Lighting is primarily required in order to see all the details in the work and processes. In terms of occupational health and safety, lighting should be used as required by the applied quality standards.
It has a great effect in preventing occupational accidents as well as reducing the error rates. In terms of lighting, while providing a suitable working environment, daylight should be used as much as possible. In cases where this is not possible, an artificial lighting system that meets the lighting criteria should be installed. Using daylight and artificial lighting systems together in a balanced way is the most suitable solution in terms of applicability.

Lighting Measurements Light is a type of radiant energy that occurs as a result of atomic interaction in the physical structure of matter. After leaving its source, it disperses in all directions and travels in waves. The two basic properties of any wave are its wavelength and frequency. Wavelength is the distance between the peaks of two adjacent waves. Frequency is the number of waves that pass from a certain point in a certain time unit. The product of wavelength and frequency gives the propagation rate of light.

The intensity of light is candle. (I)

The effect of the light source on the unit surface is called Enlightenment (E). Enlightenment light intensity and is proportional to the square of the distance. In addition, the angle between the normal rays and the surface cosine It also has a function. The Enlightenment unit is Lux.

E = I / d². Cos α (Luxury = candle / m²)

The effect of illumination on the whole surface is called the Luminous Flux and is indicated by the letter φ. The unit is Lumen.

Φ = E (Enlightenment). S (surface)

It is essential that workplaces are adequately illuminated with daylight. However, in cases where daylight cannot be used due to the subject of the work or the construction style of the workplace, or in the night work, sufficient lighting will be provided with artificial light.

Both natural and artificial lights shall be arranged in such a way that the workers are sufficiently and evenly distributed.

Vision is the most neglected sense in the workplace. “Illumination başında is one of the most appropriate physical conditions necessary to protect the health of the employees.

Light; It is electromagnetic radiation of wavelengths that can be detected by the human eye. Lighting (illuminance) the amount of light falling on a surface. Unit of luxury'type. Luxury per square meter It is lumen.

Employee's eye health is protected with appropriate lighting in the workplace, cumulative musculoskeletal trauma and many work accident is prevented, a positive psychological effect is provided. For this reason, it is necessary to provide the appropriate lighting required by the work and process, especially in industrial establishments.

Problems with inadequate illumination due to long-term adaptation to the eyes are:

  • Oculomotor changes (esophoria, exophoria), blurred vision
  • Ocular pain
  • Fatigue in the eyes
  • Itching, redness, burning and other irritation symptoms
  • Tear, dry eye
  • Decreased adaptability and convergence of the eyes
  • Color reversals
  • Headache

 

 

Lighting Measurements and How to measure lighting

Measurements can be measured as an instant point or average value over a period of time.

Light measurement is done with light meter (lux meter). Instant light level measurements:

It is the measurement of the luminosity created by the conditions at the time of measurement. In this arrangement, it is possible to monitor the change in brightness in real time by connecting the measuring device to an oscilloscope.

Conditions for Good Lighting at Work:

Lighting measurementThe aim is not to obtain a certain level of illumination, but to provide good vision conditions.

According to the work done a good workplace lighting;

  • Enough violence,
  • Uniform,
  • Well Spread,
  • Shadowless
  • Dazzling

Conditions for Good Lighting in the Workplace

  • Light intensity
  • Color and color reflection of light
  • Propagation-distribution of light
  • Shadow effect with direction of light
  • Glare prevention (limitation)
  • Surface to be illuminated (use of light)
  • Means of illumination

Lighting Measurements and the structure of the illuminated surface;

Dirty and dark (reflects 10-12% of light)

Clear and light color (> 90% of light reflected)

Matt or glossy surfaces

POSITIVE EFFECTS OF GOOD LIGHTING

  1. Increases visual acuity (eye distinguishability),
  2. The goods are better seen,
  3. Work accident can be prevented or reduced,
  4. Increases the success and performance of workers,
  5. Provides quickness and quality in working,

LIGHTING IN WORKPLACES

  1. Natural (Natural) Lighting
  2. Artificial Lighting

Illumination measurements are carried out to determine whether the working environment has sufficient illumination intensity in accordance with the characteristics of the work performed in the enterprise. These measurements should be done periodically in order to control the risks in the workplace.

If possible, lighting should be done with daylight, that is, natural lighting. Artificial lighting should be provided in working environments where daylight is not sufficient or where night work is performed. Artificial lighting is provided by electricity and can be direct lighting, indirect lighting or semi-direct lighting. However, in all cases, the lights should be distributed homogeneously in the environment.

The relevant legal regulations contain the lowest levels of illumination required in the work environment. The values ​​obtained in the measurements to be made should be between the highest and lowest limits shown in the standards. Businesses must provide correct lighting for employees, depending on the sector in which they operate and the working conditions. Lighting level is a factor that affects both the performance of the employees and the activities of the company.

Lighting level measurements made by various laboratories are performed by qualified electrical engineers, electrical technicians and high technicians.

Our company performs lighting intensity measurements in accordance with the relevant legal regulations, standards and test methods published by domestic and foreign organizations with a strong staff and technical infrastructure. A few standards considered in these studies are:

  • TS EN 12464-1 Light and lighting - Lighting of workplaces - Part 1: Indoor workplaces
  • TS EN 12464-2 Light and lighting - Lighting of workplaces - Part 2: Outdoor workplaces
  • ISO 8995-1 (CIE S 008 / E) Workplace Lighting - Part 1: Indoor
  • ISO 8995-2 (CIE S 015 / E) Workplace Lighting - Part 2: Outdoor
  • ISO 8995-3 (CIE S 016 / E) Workplace Lighting - Part 3: Lighting requirements for the safety and security of outdoor workplaces
  • COHSR-928-1-IPG-039 Measurement of workplace lighting levels - Canadian occupational safety and health regulations, Part VI

In the meantime, our company has been accredited by the Turkish Accreditation Agency (TÜRKAK) according to the TS EN ISO / IEC 17025 standard and the test, measurement, analysis, inspection and inspection procedures and reports are accepted as valid in special and official audits.

Certification

The firm, which provides auditing, supervision and certification services to internationally recognized standards, also provides periodic inspection, testing and control services.

Contact Us

Address:

Mahmutbey Mh, Dilmenler Cd, No 2 
Bagcilar - Istanbul, TURKEY

Telephone :

+90 212 702 00 00

Whatsapp:

+90 532 281 01 42

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