No. 05 „Industry and Trade"
ISBN 978-3-926 193-48-3
58 pages
DIN A4
Only as PDF!
Index
No. 05 „Industry and Trade"
- Lighting as a productivity factor
- More light is better
- Visual task lighting
- Energy-efficient lighting
- Refurbishment and maintenance
- Operating conditions
- Lamps
- Luminaires
- Quality inspection
- Metal processing
- Mechanical and plant engineering
- Automotive engineering
- Electrical and electronic engineering
- Printing
- Chemical facilities and laboratories
- Cleanrooms
- Plastics processing
- Food processing
- Heavy industry
- Storage and logistics
- Woodworking
- Automobile workshops
- Laundries and cleaners
- Watchmaking and jewellery production
- Hairdressing salons
- Beauty salons
- Butcheries
- Bakeries
- Extracts from DIN EN 12464-1
Extract
More light for the night shift
Because of the rhythms of our "biological clock", we make significantly more mistakes at certain times of the day and night. Many of these are due to fatigue induced by melatonin, the hormone that helps regulate our sleep cycles. Melatonin is secreted by the human body in darkness, so it is normally produced at night. This naturally affects night shift workers. However, night workers do not need to fight the natural need to sleep if their melatonin levels are depressed during the night shift by higher illuminance. 1,000 lx is currently considered sufficient.
This recommended illuminance level is the result of a number of studies: night-shift workers who worked in bright ambient light were found to remain astonishingly alert throughout the shift in comparison to colleagues working in "normal" ambient lighting up to 500 lx. Few suffered bouts of fatigue and they were generally in a better mood. Measurement of the amounts of melatonin produced showed that their biological clock had been successfully re-set.
