Checking the lighting installation

1. Scope

• What should be evaluated? Electric lighting, emergency lighting, daylight conditions, functionality and control, maintenance plan, electrical efficiency, etc.

2. Conditions

• Regarding the control of new systems, which conditions applied when planning?
• Evaluation of existing systems?
• Evaluation with or without daylight?
• Are the measured values new values or maintained values?

3. Implementation/checks with light measurement

• Illuminances – mean value/uniformity for the working area, immediate surroundings and the lowest illuminance within peripheral areas.
• Luminaires’ mean luminances.
• Calculate where appropriate the UGR-glare index.
• Luminance conditions in the premises.
• Luminaire’s cut-off angle.
• Light sources’ colour reproduction and colour temperature.
• Perform visual evaluation and interview personnel.
• Perform a functional check.
• Check the calibration, burn-in time and prevailing operating conditions before light measurement.